{"title":"Red Line Canada","description":"\u003cp\u003eThe full \u003cstrong\u003eRed Line\u003c\/strong\u003e range available in Canada — 53 products. Prices from $29 to $278 CAD. Free shipping across Canada on every order, with prices in Canadian dollars.\u003c\/p\u003e\u003ch2\u003eWhat Red Line makes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/oils-and-fluids\"\u003eOils and Fluids\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/oils\"\u003eMotor Oil \u0026amp; 2-Stroke Oil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gear-oils\"\u003eGear Oils\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/motor-oils\"\u003eMotor Oils\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFitment and specification details on each product page come from the manufacturer. Check them against your vehicle before ordering.\u003c\/p\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDo you ship Red Line products across Canada?\u003c\/h3\u003e\u003cp\u003eYes — free shipping to every province and territory, no minimum order. Prices are in Canadian dollars.\u003c\/p\u003e\u003ch3\u003eHow many Red Line products do you carry?\u003c\/h3\u003e\u003cp\u003e53 Red Line products are listed right now.\u003c\/p\u003e","products":[{"product_id":"red-line-d4-synthetic-automatic-transmission-fluid-atf-1-qt-4-pack-multi-application-cold-flow-protection","title":"Red Line D4 Synthetic Automatic Transmission Fluid (ATF) 1 qt 4-Pack — Multi-Application, Cold-Flow Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 30504 D4 Synthetic Automatic Transmission Fluid is a high-performance, multi-application ATF formulated to protect gears, improve cold shifting, and work across many automatic and manual transmissions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis synthetic ATF from Red Line delivers balanced friction characteristics for smoother shifts and strong gear protection without over-compatibility issues. Supplied as a convenient 1-quart bottle sold in a four-pack, it’s designed to replace or supplement a wide range of legacy ATF specifications—making it a practical choice for enthusiasts and professional technicians who service diverse vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eWhat vehicles and transmissions will this ATF work with?\u003c\/h3\u003e\n\u003cp\u003eRed Line D4 is engineered as a versatile fluid suitable for many automatic and manual gearboxes that specify Dexron, Mercon, or similar charted fluids. It’s commonly used in older Japanese and European automatics and fits several manual transaxles when a GL-4 level gear protection is acceptable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Dexron III, Dexron II, Mercon, Mercon V service intervals and specifications\u003c\/li\u003e\n  \u003cli\u003ePopular for Toyota Type T-III\/T-IV, Honda ATF-Z1, Nissan Matic D\/J\/K\u003c\/li\u003e\n  \u003cli\u003eSuitable for some BMW, Audi and VW automatic transmissions (check manufacturer guidance)\u003c\/li\u003e\n  \u003cli\u003eAlso appropriate in manual transmissions such as T-5, T-45, T-56 where GL-4 protection is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this ATF improve cold-weather shifting and gear life?\u003c\/h3\u003e\n\u003cp\u003eThe D4 formula balances slipperiness and clutch friction to enable easier, cleaner shifts in low temperatures while still protecting synchronizer rings and gears under load. That balance helps reduce harsh engagement and wear during cold starts and repeated shifts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower pour point for improved flow at cold startup\u003c\/li\u003e\n  \u003cli\u003eControlled friction modifiers for smooth engagement and downshifts\u003c\/li\u003e\n  \u003cli\u003eGear and synchro protection to limit wear during heavy use\u003c\/li\u003e\n  \u003cli\u003eSynthetic base stocks for stable performance across temperature extremes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use Red Line D4 in power steering or older manual transmissions?\u003c\/h3\u003e\n\u003cp\u003eYes—this fluid’s formulation supports use in some power steering systems and many manual transmissions, provided the manufacturer allows ATF or GL-4 gear oils. Always confirm with your vehicle’s service manual before substituting fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAcceptable where automatic-transmission fluids are specified for power steering\u003c\/li\u003e\n  \u003cli\u003eProvides GL-4 level protection for many manual transaxles and synchronizers\u003c\/li\u003e\n  \u003cli\u003eUseful as a single, multi-application inventory fluid for shops or DIYers\u003c\/li\u003e\n  \u003cli\u003eCheck OEM approvals and seals compatibility to avoid warranty or component issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose this four-pack of 1-quart bottles instead of single bottles?\u003c\/h3\u003e\n\u003cp\u003eBuying the 1-quart four-pack reduces waste, keeps a ready supply for routine service, and lowers per-quart cost for projects that need multiple quarts. It’s a practical option for owners of multiple vehicles, performance shops, or anyone who prefers to top up fluids without opening new containers frequently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEconomical per-quart pricing compared with single retail bottles\u003c\/li\u003e\n  \u003cli\u003eKeeps workspaces organized with identical, resealable bottles\u003c\/li\u003e\n  \u003cli\u003eHandy for fleet maintenance or multi-vehicle households\u003c\/li\u003e\n  \u003cli\u003eIdeal for prepping a complete fluid change without multiple orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 30504 D4 Synthetic ATF (1 Quart, 4 Pack) is aimed at automotive enthusiasts, independent mechanics, and professional shops that need a flexible, high-performance transmission fluid. It’s particularly useful for those who service a variety of older automatic and manual transmissions and want a reliable synthetic ATF with strong cold-weather shifting and gear protection properties. Always cross-reference your vehicle’s fluid specifications before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line D4 compatible with Dexron and Mercon fluids?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. D4 is formulated to work where Dexron II\/III and Mercon\/Mercon V are recommended; verify vehicle specs first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this ATF in manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Often yes—Red Line D4 provides GL-4 level protection suitable for many manual transaxles, pending OEM approval.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48079809609886,"sku":"B0041EDXGY","price":152.7,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-30504-bottle-front.jpg?v=1785771350"},{"product_id":"red-line-5w-30-fully-synthetic-motor-oil-1-gallon-ester-pao-blend-high-detergency","title":"Red Line 5W-30 Fully Synthetic Motor Oil - 1 Gallon, Ester\/PAO Blend, High Detergency","description":"\u003cstrong\u003eRed Line 15305 SAE 5W-30 is a full-synthetic ester\/PAO engine oil formulated for cars, light trucks and performance engines that need superior cleanliness and multi-grade stability.\u003c\/strong\u003e\n\n\u003cp\u003eThis SAE 5W-30 gallon from Red Line uses a blend of polyol esters and PAO (polyalphaolefin) base stocks to deliver consistent viscosity across temperatures, improved detergency, and optimized lubricity without unnecessary additive overload. It’s designed to meet modern OEM specifications and long-drain expectations while preserving ring seal and helping engines run efficiently under varied driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil perform in cold starts and high temperatures?\u003c\/h3\u003e\n\u003cp\u003eThe ester\/PAO base offers natural multi-grade behavior so the oil flows quickly at low temperatures and maintains protective film strength when hot. That balance reduces wear during cold starts and keeps hydraulic stability during high-load operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSAE 5W-30 viscosity for fast cold flow and stable hot-viscosity\u003c\/li\u003e\n  \u003cli\u003ePAO and ester chemistry resists thermal breakdown\u003c\/li\u003e\n  \u003cli\u003eMaintains lubricant film under elevated engine temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this meet my vehicle manufacturer requirements?\u003c\/h3\u003e\n\u003cp\u003eRed Line 15305 is formulated to satisfy a wide range of OEM specs and industry standards for gasoline and some diesel passenger applications. Refer to your owner’s manual for exact match; the oil aligns with numerous VW\/Audi, BMW and Ford approvals and mainstream API\/ACEA classes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with VW\/Audi specifications and several BMW long-life ratings\u003c\/li\u003e\n  \u003cli\u003eMeets API SN\/SM\/SL series and ACEA A3\/B3\/B4 performance classes\u003c\/li\u003e\n  \u003cli\u003eSuitable where dexos1-equivalent GM and modern Ford specs are required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil help extend service intervals and engine cleanliness?\u003c\/h3\u003e\n\u003cp\u003eHigh detergency in the formula keeps combustion deposits and sludge under control, which supports longer drain intervals when used according to manufacturer guidance. The clean-running chemistry preserves ring seal, helping maintain compression and fuel economy over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetergent system reduces varnish and sludge formation\u003c\/li\u003e\n  \u003cli\u003eImproved ring seal helps sustain power and efficiency\u003c\/li\u003e\n  \u003cli\u003eFormulation supports extended drains when oil condition and OEM limits permit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicle types and uses is this oil best suited for?\u003c\/h3\u003e\n\u003cp\u003eThis product is tuned for passenger cars, light trucks and performance vehicles, and its robust base-stock mix also makes it suitable for many marine and high-demand applications. It’s particularly useful where manufacturers call for full-synthetic 5W-30 oils with high detergency and long-life characteristics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for performance cars and modern gasoline engines\u003c\/li\u003e\n  \u003cli\u003eAcceptable in many light trucks and some marine installations\u003c\/li\u003e\n  \u003cli\u003eUseful when OEMs specify high-performance or long-life 5W-30 oils\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Owners and technicians looking for a high-quality full-synthetic 5W-30 with ester\/PAO chemistry—especially those running European or performance engines that require strong detergency and OEM-level approvals. Choose Red Line 15305 when you want a gallon-sized supply that supports extended drain strategies and consistent protection across temperature extremes.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 15305 SAE 5W-30 compatible with my BMW or VW?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—it's formulated to meet many BMW LL-01 and VW\/Audi 502.00\/503.01\/505.01 family requirements; always verify your owner's manual first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this oil be used for extended drain intervals?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The high detergency and base stocks support extended drains when allowed by the vehicle manufacturer and monitored by oil condition.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48079810330782,"sku":"B004BONVB6","price":155.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-front-label.jpg?v=1785771381"},{"product_id":"red-line-v-twin-primary-case-oil-3-x-1-qt-pack-friction-balanced-synthetic-for-wet-clutch-engagement","title":"Red Line V-Twin Primary Case Oil — 3 x 1 qt Pack, Friction‑Balanced Synthetic for Wet Clutch Engagement","description":"\u003cp\u003e\u003cstrong\u003eRed Line V‑Twin Primary Case Oil is a friction‑balanced synthetic designed to optimize wet clutch engagement and protect primary chaincases in V‑Twin motors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis specially formulated primary case oil blends lubricity with controlled friction so wet‑diaphragm clutches operate smoothly without slipping. Packaged as three 1‑quart bottles, it’s suitable for 1984‑present American V‑Twin engines (Evolution, Twin Cam and similar aftermarket designs) and is a practical choice for motorcycles, UTVs, ATVs and powersports machines that require reliable clutch feel and chaincase protection.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve clutch engagement and control?\u003c\/h3\u003e\n\u003cp\u003eUnlike many full‑synthetic oils that can be too slick for wet clutches, this V‑Twin Primary Case Oil is engineered to limit unwanted slip while still offering protective lubrication. Riders notice more positive engagement, reduced chattering and more consistent lever feel under a variety of loads and temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFriction‑balanced formula to maintain clutch bite without over‑slip\u003c\/li\u003e\n  \u003cli\u003eSmooth engagement reduces rider fatigue and improves control\u003c\/li\u003e\n  \u003cli\u003eStable performance across typical operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protective benefits does it provide for the primary chaincase?\u003c\/h3\u003e\n\u003cp\u003eThe oil reduces wear on chaincase components and helps control operating temperature by providing dependable film strength and thermal stability. This extends component life and helps keep the primary drive running quietly and efficiently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWear reduction for chains, sprockets and bearings\u003c\/li\u003e\n  \u003cli\u003eHeat resistance helps maintain viscosity under load\u003c\/li\u003e\n  \u003cli\u003eCorrosion and deposit control for cleaner internals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and engines are compatible with this product?\u003c\/h3\u003e\n\u003cp\u003eDesigned for 1984‑to‑present V‑Twin American motorcycle engines — including Evolution and Twin Cam families — it also fits aftermarket engines with similar primary chaincase designs. It's appropriate for motorcycles, ATVs, and UTVs that specify a primary case or wet clutch oil.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Evolution, Twin Cam and comparable aftermarket V‑Twin designs\u003c\/li\u003e\n  \u003cli\u003eSuitable for motorcycles, ATVs, UTVs and other powersports machines\u003c\/li\u003e\n  \u003cli\u003eIntended for primary chaincases with wet‑diaphragm spring clutches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Red Line’s primary case oil over conventional options?\u003c\/h3\u003e\n\u003cp\u003eRed Line has focused on high performance lubricants since 1979; this product balances clutch‑assist properties with protection rather than maximizing slipperiness or film thickness alone. The result is better clutch life, more consistent operation and fewer adjustments over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDecades of specialty lubricant engineering and motorsports experience\u003c\/li\u003e\n  \u003cli\u003eOptimized formula for clutch life and driving feel\u003c\/li\u003e\n  \u003cli\u003eOffered in a convenient 3‑quart pack for routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Riders, mechanics and powersports enthusiasts who want a primary case oil that delivers controlled clutch friction and strong protection for V‑Twin primary chaincases. If you maintain American V‑Twin motorcycles or similar aftermarket engines and rely on clean, predictable clutch engagement — especially in street, touring or recreational off‑road use — this Red Line 1‑quart, 3‑pack is formulated to meet those needs without compromise.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in any V‑Twin primary case?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use it in 1984‑present American V‑Twin engines and aftermarket primaries with similar designs; check your manufacturer's requirement for wet clutch oils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much oil is included in the pack?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing contains three 1‑quart bottles, totaling three quarts of primary case oil.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48079846703262,"sku":"B07SB7PMRC","price":155.35,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-primary-case-oil-front-packaging.jpg?v=1785772709"},{"product_id":"red-line-75w80-gl-4-manual-transmission-gear-oil-1-gallon-protects-brass-synchros-smooth-shifts","title":"Red Line 75W80 GL-4 Manual Transmission Gear Oil — 1 Gallon, Protects Brass Synchros \u0026 Smooth Shifts","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50205 SAE 75W80 GL-4 is a high-performance manual transmission and transaxle lubricant formulated to protect brass synchros, promote crisp shifts, and extend gearbox life.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngineered for manual transmissions that require GL-4 friction characteristics, this Red Line 1-gallon MTL (manual transmission lubricant) blends shear-stable base stocks and friction modifiers to deliver controlled clutch bite, reduced wear, and reliable operation across a wide range of temperatures. It’s commonly recommended where GL-1, GL-3, or GL-4 specifications are called for and for applications where aggressive GL-5 chemistries could harm brass synchronizers.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve shifting feel and synchronizer performance?\u003c\/h3\u003e\n\u003cp\u003eThe 75W80 viscosity and balanced friction chemistry provide the right amount of clutch bite for synchronizer rings, preventing slippage or sticking while allowing smooth gear engagement. Compared with overly slippery synthetic gear oils, this formula keeps shifts predictable and reduces grind during cold starts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConsistent friction characteristics for reliable synchronizer engagement\u003c\/li\u003e\n  \u003cli\u003eFall-back viscosity at low temperatures for easier cold shifts\u003c\/li\u003e\n  \u003cli\u003eResists shear to maintain film thickness under load\u003c\/li\u003e\n  \u003cli\u003eReduces shift effort without causing clutch chatter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this lubricant protect internal gears and bearings under load?\u003c\/h3\u003e\n\u003cp\u003eYes — the formulation contains robust anti-wear additives that form protective films on gear teeth and bearing surfaces, helping to minimize scoring and pitting during high-torque operation. It’s suitable for many performance and OEM manual gearboxes where GL-4 protection is specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAnti-wear additives for reduced metal-to-metal contact\u003c\/li\u003e\n  \u003cli\u003eLoad-bearing film that helps prevent tooth wear and scuffing\u003c\/li\u003e\n  \u003cli\u003eStable chemistry under sustained high torque and temperature\u003c\/li\u003e\n  \u003cli\u003eCompatible with transmissions listing GL-1, GL-3, and GL-4\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for brass synchronizers and which vehicles commonly use it?\u003c\/h3\u003e\n\u003cp\u003eRed Line 50205 avoids reactive sulfur compounds found in many GL-5 formulations, so it won’t attack brass synchros. It’s widely used in European and domestic cars and light trucks that specify GL-4 gear oils, including many BMWs, Hondas\/Acura units, certain Mini Cooper models, and a range of manual transmissions listed by domestic manufacturers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated specifically to be non-reactive with yellow metals\u003c\/li\u003e\n  \u003cli\u003eRecommended for select BMW, Honda\/Acura, Mini Cooper, Land Rover models\u003c\/li\u003e\n  \u003cli\u003eUsed in various Nissan\/Chrysler manual transmissions and truck NV series\u003c\/li\u003e\n  \u003cli\u003eWorks where special synchromesh fluids are called for\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does Red Line's formulation compare to other gear oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line focuses on performance-driven lubricants that prioritize protection and shift quality without compromising synchronizer life. Unlike some heavier GL-5 or overly slick synthetics, this 75W80 GL-4 blend balances friction control and anti-wear protection for both street and light-duty performance use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLess slippery than many GL-5 synthetics — better for synchronizers\u003c\/li\u003e\n  \u003cli\u003eEngineered for longer synchro and gear life under normal to spirited driving\u003c\/li\u003e\n  \u003cli\u003eShear-stable to maintain viscosity and load protection over time\u003c\/li\u003e\n  \u003cli\u003eBacked by Red Line’s motorsport and OEM-focused product development\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and technicians seeking a dependable, performance-oriented manual transmission lubricant for vehicles that require GL-4 friction properties. Ideal for owners of European and domestic cars with brass synchronizers, DIY mechanics servicing manual gearboxes, and performance enthusiasts who want improved shift feel without risking synchro damage. Choose the 1-gallon Red Line 50205 when you need a durable, shift-friendly MTL that supports longer gearbox life and consistent operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in a transmission that calls for GL-5?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — GL-5 contains reactive additives that differ from GL-4. Use GL-4 where brass synchros require it; consult the vehicle manual before switching.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I change the manual transmission fluid?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Change intervals vary by vehicle and use; check your owner’s manual. Inspect fluid every 30,000–60,000 miles for wear or contamination.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080144662686,"sku":"B002INJ69I","price":173.56,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50205-front-label.jpg?v=1785779278"},{"product_id":"red-line-v-twin-powerpack-kit-20w-60hd-motorcycle-engine-oil-pack-with-transmission-and-primary-fluids-fuel-system-cleaner","title":"Red Line V-Twin Powerpack Kit — 20W-60HD Motorcycle Engine Oil Pack with transmission and primary fluids, fuel system cleaner","description":"\u003cp\u003e\u003cstrong\u003eRed Line 90231 Powerpack Kit is a complete V-Twin motorcycle service kit centered on 20W-60HD engine oil and tailored fluids for classic and modern big-twin engines operating in hot climates or with wide clearances.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis all-in-one Powerpack supplies the engine, transmission and primary fluids, plus a fuel system cleaner and service accessories, so you can perform a thorough oil-and-fluids refresh in one session. The kit is assembled specifically for motorcycles with flathead, knucklehead, shovelhead and panhead designs as well as contemporary V-Twin platforms. Red Line leverages decades of lubricant development to offer a package that focuses on compatibility and protection when heat and clearance demand a thicker grade like 20W-60HD.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exactly comes in the Powerpack kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains all the main fluids and a few useful service extras for a single complete maintenance job on many V-Twin bikes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5 quarts of 20W-60 motorcycle engine oil formulated for V-Twin engines\u003c\/li\u003e\n  \u003cli\u003e1 quart of V-Twin transmission oil with ShockProof additive\u003c\/li\u003e\n  \u003cli\u003e1 quart of primary chain case oil\u003c\/li\u003e\n  \u003cli\u003e1 bottle of powersports fuel injection cleaner\u003c\/li\u003e\n  \u003cli\u003eSticker sheet, embroidered Red Line cap, and a multipurpose funnel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does 20W-60HD help in hot-weather or wide-clearance V-Twins?\u003c\/h3\u003e\n\u003cp\u003e20W-60HD is a heavier engine oil choice engineered to maintain film strength and oil pressure where higher operating temperatures or large bearing clearances can thin conventional oils. It helps reduce wear by preserving a thicker lubricant film at elevated temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved viscosity retention under heat for older or high-temperature engines\u003c\/li\u003e\n  \u003cli\u003eGreater oil film thickness for engines with larger internal clearances\u003c\/li\u003e\n  \u003cli\u003eFormulated specifically for motorcycle demands, including wet-clutch compatibility where required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit work for my Harley-Davidson or large-displacement V-Twin?\u003c\/h3\u003e\n\u003cp\u003eThe Powerpack covers many H‑D and similar V-Twin models, but capacity differences matter—some larger engines require an extra primary bottle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for 2007-up Harley-Davidson Twin Cam 96-inch and larger engines\u003c\/li\u003e\n  \u003cli\u003eMilwaukee-Eight, Evolution and many V-Twin cases typically match the kit’s wet capacities\u003c\/li\u003e\n  \u003cli\u003eSome Twin Cam variants with 38 oz primary capacity need an additional primary oil bottle (kit includes standard primary amount)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes Red Line oils different from ordinary motorcycle oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line has formulated specialized lubricants since 1979, blending high-performance base stocks and additives intended to protect under extreme conditions. Their products emphasize chemical stability, wear protection and compatibility with powersports components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLong history of motorsports-grade lubricant development\u003c\/li\u003e\n  \u003cli\u003eShockProof and other additives tailored for transmission and clutch performance\u003c\/li\u003e\n  \u003cli\u003eTested for compatibility across V-Twin platforms and service use cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this kit for? The Red Line 90231 Powerpack is designed for riders, mechanics and vintage-restoration enthusiasts who service large-displacement V-Twin motorcycles—especially machines operating in hot climates or equipped with older-style engines and wider clearances. If you want a single-box solution that supplies engine, transmission and primary oils plus a fuel system cleaner and handy accessories for a complete maintenance session, this kit simplifies the job. Note: check your motorcycle’s primary oil capacity before ordering if you ride a Twin Cam variant with the larger 38 oz capacity; you may need an extra quart of primary chain case oil to meet that reservoir size.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit include enough oil for a complete Harley primary change?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It includes a quart of primary oil, but Twin Cam engines with 38 oz capacity may need an extra bottle to reach full capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 20W-60HD safe for wet-clutch V-Twin motorcycles?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—Red Line motorcycle oils are formulated for typical wet-clutch compatibility, but always follow your manufacturer's clutch and oil recommendations.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080156491934,"sku":"B0041CAA3A","price":347.96,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-powerpack-front-packaging.jpg?v=1785779375"},{"product_id":"red-line-5w-30-fully-synthetic-motor-oil-1-quart-6-pack-ester-pao-high-detergency","title":"Red Line 5W-30 Fully Synthetic Motor Oil — 1 Quart (6-Pack), Ester\/PAO High Detergency","description":"\u003cp\u003e\u003cstrong\u003eRed Line 15304 SAE 5W-30 is a fully synthetic ester\/PAO motor oil sold as six 1‑quart bottles, engineered for high-performance cars, light trucks and marine engines that need outstanding cleanliness and lubrication.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis oil blends polyol ester and PAO base stocks to deliver multi-grade stability, high detergency and improved ring seal without relying on unnecessary additives that reduce lubricity. The formula supports extended drain intervals, maintains engine cleanliness, and is suitable where OEM specifications such as VW\/Audi 502.00\/503.01\/505.01‑99, BMW LL‑01, Ford WSS‑M2C946‑A, and API\/ACEA categories are required. Packaged conveniently as a six‑quart set, it suits DIYers, professional shops and fleet operators who demand consistent, performance‑oriented lubrication.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil keep engines cleaner and extend drain intervals?\u003c\/h3\u003e\n\u003cp\u003eThe high detergency formulation resists deposit formation and neutralizes contaminants, helping pistons, rings and valves remain cleaner over time. Cleaner internals reduce friction and oil breakdown, allowing for longer, safer drain intervals when used in compatible engines and driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePolyol ester\/PAO base stocks with inherent multi‑grade properties\u003c\/li\u003e\n  \u003cli\u003eElevated detergency to prevent sludge and varnish\u003c\/li\u003e\n  \u003cli\u003eImproved ring seal for reduced blow‑by and oil consumption\u003c\/li\u003e\n  \u003cli\u003eDesigned to support extended drain recommendations where permitted\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this 5W‑30 fit my vehicle’s manufacturer specifications?\u003c\/h3\u003e\n\u003cp\u003eRed Line 15304 meets a broad set of industry and OEM performance categories, making it compatible with many European and domestic engines that call for a high‑performance 5W‑30. Always confirm the vehicle owner’s manual or manufacturer guidance before switching oils to ensure compliance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets API SN\/SM\/SL\/SJ\/SH\/SG\/CF performance classes\u003c\/li\u003e\n  \u003cli\u003eACEA A3\/B3\/B4 coverage for European petrol and diesel engines\u003c\/li\u003e\n  \u003cli\u003eFormulated to satisfy VW\/Audi 502.00\/503.01\/505.01‑99 and BMW LL‑01\u003c\/li\u003e\n  \u003cli\u003eCompatible with Ford WSS‑M2C946‑A and many GM dexos1 applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance benefits can I expect with Red Line’s ester\/PAO formula?\u003c\/h3\u003e\n\u003cp\u003eThe ester\/PAO architecture delivers robust thermal stability, consistent viscosity control across temperatures, and superior lubricity for metal surfaces. These traits translate into smoother operation, less wear on critical parts, and often better fuel efficiency versus conventional oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExcellent cold‑start flow at 5W viscosity for quicker oiling on startup\u003c\/li\u003e\n  \u003cli\u003eStable viscosity at high operating temperatures for reliable protection\u003c\/li\u003e\n  \u003cli\u003eEnhanced lubricity for improved component life and reduced wear\u003c\/li\u003e\n  \u003cli\u003eHelps maintain horsepower by preserving ring seal and reducing friction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use the 6‑pack quart configuration?\u003c\/h3\u003e\n\u003cp\u003eThe six 1‑quart bottles are ideal for single oil changes on many modern engines or for stocking a garage. The pack simplifies maintenance scheduling for multiple vehicles or repeated services for one engine without frequent reordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEach unit is 1 quart — use quantities per your engine’s capacity\u003c\/li\u003e\n  \u003cli\u003ePerfect for multi‑vehicle households, small fleets, or professional shops\u003c\/li\u003e\n  \u003cli\u003eStore sealed bottles in a cool, dry place away from direct sunlight\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle manufacturer drain intervals and service procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line 15304 SAE 5W‑30 is aimed at enthusiasts, mechanics and fleet managers who need a high‑performance, fully synthetic oil with strong detergency and wide OEM coverage. It suits owners of European and North American performance cars, light trucks and select marine applications who prioritize engine cleanliness, longevity and consistent protection under varied operating conditions. Before switching, verify your vehicle’s oil spec list to ensure the formula aligns with manufacturer requirements.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 15304 SAE 5W‑30 compatible with BMW LL‑01 requirements?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this oil is formulated to meet BMW LL‑01 specifications, but always confirm against your vehicle manual before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many quarts are included and is it consumer packaged?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The product is sold as six 1‑quart bottles, packaged for retail or workshop use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080156459166,"sku":"B0041EHSPQ","price":215.96,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-15304-front-packaging.jpg?v=1785779377"},{"product_id":"red-line-5w-50-fully-synthetic-motor-oil-1-gallon-ester-pao-blend-for-high-temp-forced-induction-engines","title":"Red Line 5W-50 Fully Synthetic Motor Oil — 1 Gallon, Ester\/PAO Blend for High-Temp \u0026 Forced-Induction Engines","description":"\u003cp\u003e\u003cstrong\u003eRed Line 11605 SAE 5W-50 is a fully synthetic, ester\/PAO motor oil formulated for high-performance cars, trucks and marine engines that need robust high-temperature protection and strong detergent action.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 1-gallon pack of Red Line 5W-50 blends esters and PAO base stocks with advanced additives to deliver thermal stability, oxidation resistance and improved ring seal for engines subjected to heavy loads, forced induction and extended drain intervals. It meets multiple API and ACEA specifications and is widely used in performance applications including supercharged Ford engines and select Range Rover models. The formulation focuses on keeping combustion chambers cleaner, preserving viscosity under heat, and supporting fuel economy where appropriate.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes this oil suitable for high-temperature and forced-induction engines?\u003c\/h3\u003e\n\u003cp\u003eRed Line 5W-50 uses stable synthetic base stocks and an additive package tuned to resist breakdown at elevated temperatures, which protects bearings, pistons and turbochargers under stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePAO and ester synthetics for superior thermal and oxidative stability\u003c\/li\u003e\n  \u003cli\u003eHigh temperature film strength to maintain lubrication under load\u003c\/li\u003e\n  \u003cli\u003eAdditives that limit sludge and varnish formation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this formula help keep engines clean and efficient?\u003c\/h3\u003e\n\u003cp\u003eThe oil includes potent detergents and dispersants to minimize deposit buildup on rings and cylinders, promoting better ring seal and aiding efficient combustion over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh detergency for reduced varnish and sludge\u003c\/li\u003e\n  \u003cli\u003eImproved ring sealing for more consistent power delivery\u003c\/li\u003e\n  \u003cli\u003eSupports extended drain intervals when manufacturer allowances permit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and specifications is the 5W-50 recommended for?\u003c\/h3\u003e\n\u003cp\u003eThis product is popular in performance passenger cars, light trucks and marine engines. It is often selected for supercharged Ford engines (including certain Shelby and GT models), Focus RS variants, and some Range Rover engines from the early 2000s.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with API SN\/SM\/SL\/SJ\/SH\/SG\/CF service categories\u003c\/li\u003e\n  \u003cli\u003eMeets ACEA A3\/B3\/B4 performance levels\u003c\/li\u003e\n  \u003cli\u003eRecommended for specific OEMs like certain Ford high-performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Red Line over other motor oil brands?\u003c\/h3\u003e\n\u003cp\u003eRed Line has focused on high-performance lubricants since 1979 and designs formulas that prioritize protection and performance without compromise. The brand emphasizes advanced chemistry and race-proven technology.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDecades of motorsport and engineering experience\u003c\/li\u003e\n  \u003cli\u003eFormulas aimed at performance and longevity, not just cost savings\u003c\/li\u003e\n  \u003cli\u003eExtensively used in demanding vehicle applications worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and technicians who operate high-performance or heavily loaded engines—especially turbocharged or supercharged units—and who want a synthetic oil that combines strong high-temperature protection, elevated detergency and broad specification coverage. Ideal for owners of certain Ford performance models, Focus RS vehicles, marine powerplants, and classic Range Rover engines seeking a modern, robust synthetic option.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Red Line 5W-50 be used in turbocharged engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Its ester\/PAO base and additive package provide high-temperature protection suitable for turbocharged and supercharged engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil compatible with older Ford performance engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It is commonly recommended for many 5.4L supercharged Ford applications and certain early-2000s Range Rover engines—check your owner manual for approvals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080160293022,"sku":"B004BORLQM","price":164.15,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-11605-front-gallon.jpg?v=1785779429"},{"product_id":"red-line-mt-85-75w85-gl-4-gear-oil-1-quart-4-pack-synthetic-blend-brass-safe-for-smoother-shifts","title":"Red Line MT-85 75W85 GL-4 Gear Oil 1-Quart 4-Pack — Synthetic Blend, Brass-Safe for Smoother Shifts","description":"\u003cp\u003e\u003cstrong\u003eRed Line MT-85 75W85 GL-4 is a high-performance manual transmission gear oil formulated to protect gears and brass synchros while delivering smoother, quicker shifts in a wide range of passenger and performance cars.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis quart-sized, four-pack of Red Line MT-85 (part number 50504) is a synthetic blend gear lubricant designed for GL-1, GL-3 and GL-4 applications where controlled friction and compatibility with brass synchros are essential. MT-85 balances wear protection and the correct frictional characteristics to help preserve synchros, extend gearbox life and improve shift feel, especially in cold starts. It’s commonly used in a variety of manually shifted vehicles including Nissan, Mitsubishi, Hyundai, Kia and Quaife-equipped gearboxes.\u003c\/p\u003e\n\n\u003ch3\u003eHow does MT-85 improve shifting performance?\u003c\/h3\u003e\n\u003cp\u003eMT-85 is tuned to provide controlled slipperiness so synchronizers engage smoothly without being over-lubricated. That balance reduces grinding and makes shifts feel shorter and more precise, particularly during cold-weather operation when many oils thicken and slow synchromesh action.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated friction characteristics for reliable synchro engagement\u003c\/li\u003e\n  \u003cli\u003eMaintains shift quality across broad temperatures\u003c\/li\u003e\n  \u003cli\u003eHelps reduce shift effort and false neutrals in performance use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for brass synchros and older transmissions?\u003c\/h3\u003e\n\u003cp\u003eYes — MT-85 is a GL-4 rated gear oil that avoids the corrosive reactive sulfur compounds found in typical GL-5 formulations. That makes it safe for brass and bronze synchros and suitable for many older transmissions that require milder gear oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-4 chemistry protects non-ferrous synchro materials\u003c\/li\u003e\n  \u003cli\u003eRecommended where GL-1, GL-3 or GL-4 is specified\u003c\/li\u003e\n  \u003cli\u003eReduces risk of brass wear compared with GL-5 in sensitive gearsets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and applications commonly use MT-85?\u003c\/h3\u003e\n\u003cp\u003eMT-85 is popular among drivers of both factory and modified manual-transmission cars. It is frequently specified or chosen for Nissan 350Z\/370Z and many Maxima, Altima and Sentra models, Mitsubishi Evolution transmissions, and a range of Hyundai and Kia gearboxes, as well as custom Quaife differential and synchro setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon fitment: Nissan 350Z, 370Z, Maxima, Altima, Sentra\u003c\/li\u003e\n  \u003cli\u003eAlso used in Mitsubishi Evo and several Hyundai\/Kia manuals\u003c\/li\u003e\n  \u003cli\u003eCompatible with Quaife and other aftermarket synchro\/differential systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does MT-85 protect gears and extend component life?\u003c\/h3\u003e\n\u003cp\u003eThe formulation offers robust wear protection while preserving the frictional balance needed for synchronizers. By limiting metal-to-metal contact and resisting shearing and thermal breakdown, MT-85 helps prolong the life of gears, bearings and synchros under both street and spirited driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-performance additives reduce wear and scuffing\u003c\/li\u003e\n  \u003cli\u003eStable viscosity under heat preserves film strength\u003c\/li\u003e\n  \u003cli\u003eHelps maintain synchro life and consistent shift feel over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Drivers and technicians who need a reliable, synchro-friendly manual transmission oil that combines protection with predictable shift behavior will appreciate Red Line MT-85. It’s aimed at owners of compatibility-sensitive gearboxes — from daily-driven Nissans and Hyundais to performance-oriented Mitsubishis and Quaife-equipped builds — and for anyone replacing fluids in transmissions that call for GL-1, GL-3 or GL-4 specifications. Packaged as a convenient one-quart bottle and sold in a four-pack, this product is practical for single-service jobs or keeping spare fluid on hand for regular maintenance and track-day prep.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can MT-85 replace GL-5 oil in my manual gearbox?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: MT-85 is GL-4 and safer for brass synchros; it can replace GL-5 only if your gearbox requires GL-4 or specifies MT-85—check the manufacturer recommendation first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is 75W85 suitable for cold-weather shifting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 75W viscosity helps maintain easier shifting during cold starts while preserving protection as temperatures rise.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080238117022,"sku":"B00NQBFHVW","price":184.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-mt85-front-package.jpg?v=1785780003"},{"product_id":"red-line-si-1-fuel-system-cleaner-15-oz-4-pack-removes-deposits-prevents-corrosion","title":"Red Line SI-1 Fuel System Cleaner 15 oz 4-Pack — Removes Deposits \u0026 Prevents Corrosion","description":"\u003cp\u003e\u003cstrong\u003eRed Line SI-1 is a concentrated fuel system cleaner that removes deposits and helps prevent corrosion across injectors, carburetors, valves and combustion chambers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for gasoline engines, Red Line 60103 SI-1 Complete Fuel System Cleaner delivers a potent blend of detergents formulated to dissolve gum, varnish and carbon buildup. Each 15-ounce bottle is intended for one tank treatment, restoring spray patterns and improving fuel burn consistency while stabilizing gasoline during storage. This four-pack provides multiple treatments for regular maintenance or a multi-vehicle shop.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line SI-1 improve fuel system performance?\u003c\/h3\u003e\n\u003cp\u003eSI-1 works by breaking down and suspending fuel deposits that form on injectors, carburetors, intake valves and in combustion chambers. Cleaner components restore correct atomization and airflow, which helps the engine run more smoothly and efficiently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePowerful detergents target both high-temperature and low-temperature deposits.\u003c\/li\u003e\n  \u003cli\u003eRestores injector spray pattern and throttle response.\u003c\/li\u003e\n  \u003cli\u003eHelps reduce rough idling and hesitation related to deposit build-up.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it prevent corrosion and gasoline degradation?\u003c\/h3\u003e\n\u003cp\u003eRed Line SI-1 contains additives that inhibit corrosion inside the fuel system and improve gasoline stability during storage. By limiting oxidation and moisture-related corrosion, the product helps protect metal components and reduces varnish formation over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStabilizes fuel to slow down oxidation and gum formation.\u003c\/li\u003e\n  \u003cli\u003eCorrosion inhibitors protect internal fuel system metal parts.\u003c\/li\u003e\n  \u003cli\u003eUseful for vehicles in seasonal storage or infrequent use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use one 15-ounce bottle for best results?\u003c\/h3\u003e\n\u003cp\u003eEach 15-ounce bottle is formulated to treat one full gasoline tank for most vehicles—simply pour the bottle into the tank before filling with fuel. For heavily contaminated systems, a second treatment or professional cleaning may be beneficial.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one bottle per tank for routine cleaning and maintenance.\u003c\/li\u003e\n  \u003cli\u003eAdd before filling to ensure proper mixing with fuel.\u003c\/li\u003e\n  \u003cli\u003eFollow up treatments as needed for older vehicles with significant deposits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs SI-1 compatible with different gasoline engines and fuels?\u003c\/h3\u003e\n\u003cp\u003eSI-1 is formulated for use in gasoline engines including multi-port fuel injection, throttle-body injection, and carbureted systems. It is designed to work with standard gasoline and commonly used ethanol blends; always follow manufacturer recommendations for fuel additives.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSafe for most gasoline-powered cars, trucks, motorcycles, and small engines.\u003c\/li\u003e\n  \u003cli\u003eEffective with regular and reformulated gasolines, including ethanol blends.\u003c\/li\u003e\n  \u003cli\u003eNot intended for diesel engines—use diesel-specific treatments for those systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: Red Line SI-1 Complete Fuel System Cleaner is aimed at vehicle owners, mechanics, and fleet managers who want a concentrated, professional-grade additive to tackle injector and carburetor deposits, improve fuel stability, and reduce corrosion risk. The 4-pack suits regular maintenance schedules, multi-vehicle households, or shops that perform routine fuel-system treatments.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eDistillates, petroleum, hydrotreated light naphthenic, Oxirane, 2-ethyl-, homopolymer, 2-aminoethylethyl tridecyl ether, branched, Distillates, petroleum, hydrotreated heavy naphthenic, Kerosine, petroleum, hydrodesulfurized,Naphtha, petroleum, hydrodesulfurized heavy\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use Red Line SI-1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one bottle per full tank for cleaning; repeat every few thousand miles or as needed for maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use SI-1 with ethanol-blended gasoline?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, SI-1 is compatible with common ethanol blends and helps stabilize fuel during storage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080920314014,"sku":"B00NQB6O0A","price":143.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si-1-front-packaging.jpg?v=1785792393"},{"product_id":"red-line-75w80-gl-4-manual-transmission-gear-oil-1-quart-bottles-2-pack-semi-synthetic-mtl-for-synchro-protection","title":"Red Line 75W80 GL-4 Manual Transmission Gear Oil — 1 Quart Bottles (2-Pack) Semi-Synthetic MTL for Synchro Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50204 SAE 75W80 GL-4 is a high-performance manual transmission and transaxle lubricant formulated to protect gears and synchronizers while delivering smoother, quicker shifts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis two-pack of 1-quart bottles contains Red Line's 75W80 API GL-4 manual transmission lubricant designed for modern and vintage manual gearboxes that require GL-1, GL-3 or GL-4 fluids. It avoids the reactive sulfur chemistries present in GL-5 oils that can harm brass synchros, and balances friction properties so synchronizer engagement is predictable rather than too slippery. The formulation targets longer synchro life, improved gear protection and consistent shifting under a range of driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose GL-4 75W80 for my manual transmission?\u003c\/h3\u003e\n\n\u003cp\u003eGL-4 75W80 is specified where brass or bronze synchronizers are used and where controlled friction is needed for proper gear engagement. This grade reduces wear without the corrosive additives found in GL-5 formulations, making it safer for many manual gearboxes.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with transmissions specifying GL-1, GL-3 or GL-4 lubricants.\u003c\/li\u003e\n  \u003cli\u003eFormulated without reactive sulfurs that can damage non-ferrous synchros.\u003c\/li\u003e\n  \u003cli\u003eBalanced friction to avoid overly slick gear change feel common with some synthetics.\u003c\/li\u003e\n  \u003cli\u003eDesigned to protect gears under normal and spirited driving loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil improve shift feel and synchro life?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line's MTL (Manual Transmission Lubricant) is engineered for measured friction control so synchronizers grab and release reliably. That helps reduce wear on synchro rings and delivers a firmer, more positive shift action across gears.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSemi-synthetic base and friction modifiers tuned for synchronizer performance.\u003c\/li\u003e\n  \u003cli\u003eReduces repeated micro-slipping that accelerates synchro wear.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain shift consistency as temperature and load vary.\u003c\/li\u003e\n  \u003cli\u003ePromotes longer component life when used as recommended by OEMs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and transmissions commonly use this product?\u003c\/h3\u003e\n\n\u003cp\u003eThis 75W80 GL-4 lubricant is a popular factory or aftermarket choice in many European, Asian and American manual transmissions that require GL-4 lubrication. It fits a range of cars, SUVs and light trucks where brass synchros are present.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCommon applications: BMW, Honda\/Acura, Ford Focus, late-model Mini Cooper.\u003c\/li\u003e\n  \u003cli\u003eAlso suitable for certain Land Rover\/Range Rover LT77S gearboxes and Mitsubishi models.\u003c\/li\u003e\n  \u003cli\u003eRecommended for many Dodge \u0026amp; Jeep NV series truck transmissions (NV1500, NV3500, NV3550, NV5600) where GL-4 is specified.\u003c\/li\u003e\n  \u003cli\u003eCheck the vehicle owner's manual or service guide to confirm GL-4 viscosity requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store this Red Line transmission oil?\u003c\/h3\u003e\n\n\u003cp\u003eUse as a drain-and-fill service or top-up according to the vehicle manufacturer's fill procedure and capacity. Store unopened bottles in a cool, dry place away from direct sunlight and high heat to preserve additive effectiveness.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFollow OEM fill volume and fill method for your specific transmission model.\u003c\/li\u003e\n  \u003cli\u003eReplace seals or gaskets if required when servicing to prevent contamination.\u003c\/li\u003e\n  \u003cli\u003eDispose of used oil per local environmental regulations.\u003c\/li\u003e\n  \u003cli\u003eKeep a spare quart on hand for top-offs or field repairs; this listing includes two 1-quart bottles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 50204 SAE 75W80 GL-4 manual transmission oil is aimed at DIY mechanics, independent shops and enthusiasts who need a GL-4 lubricant that protects brass synchronizers, delivers consistent shift feel and is suitable for a wide range of European, Asian and American manual gearboxes. If your vehicle’s service documents call for GL-4 or similar manual transmission lubricants, this product provides a purpose-built option to preserve synchro life and gear durability without the reactive additives found in GL-5 oils.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W80 safe for brass synchronizers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This GL-4 formulation avoids reactive sulfurs found in many GL-5 oils that can harm brass\/bronze synchronizers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in limited-slip or hypoid differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This product is formulated for manual transmissions and transaxles; check manufacturer specs before using in differentials.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48080922509470,"sku":"B00NTEWQ1U","price":124.13,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50204-front-label.jpg?v=1785792414"},{"product_id":"red-line-75w-90-gl-5-synthetic-gear-oil-1-qt-2-pack-hypoid-lsd-friendly-high-temp-protection","title":"Red Line 75W-90 GL-5 Synthetic Gear Oil 1 qt (2-Pack) — Hypoid LSD Friendly, High-Temp Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 75W90 GL-5 synthetic gear oil is a high-performance hypoid differential lubricant formulated with built-in friction modifiers for clutch-type limited slip differentials, sold here as two 1-quart bottles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis fully synthetic gear oil is engineered for hypoid gearsets found in many passenger cars, light trucks and race vehicles. It meets GL-5 performance standards and carries additional approvals and specifications that make it a suitable drop-in substitute for SAE 90 or 80W90 differentials. Because it contains extra friction modifiers, it’s ready for many clutch-type limited slip (LSD) units without separate additives, while offering thermal stability and wear protection under heavy loads.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes this gear oil suitable for hypoid differentials?\u003c\/h3\u003e\n\u003cp\u003eThe base oil chemistry and additive package are optimized for the sliding and rolling contact stresses of hypoid gears. A GL-5 rating indicates the formulation provides extreme pressure protection, while the synthetic base promotes temperature stability and reduced volatility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtreme-pressure additives to resist gear scuffing and scoring\u003c\/li\u003e\n  \u003cli\u003eSynthetic base oils for consistent viscosity at high temperatures\u003c\/li\u003e\n  \u003cli\u003eImproved shear stability to maintain film strength under load\u003c\/li\u003e\n  \u003cli\u003eMeets multiple industry specifications for broad compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil work with limited slip differentials?\u003c\/h3\u003e\n\u003cp\u003eThis Red Line product includes friction-modifying ingredients intended for many clutch-type limited slip differentials, eliminating the need for separate friction additives in most applications. Always check the vehicle manufacturer’s guidance; a few LSD designs require specific additive types.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in friction modifiers for many clutch-type LSDs\u003c\/li\u003e\n  \u003cli\u003eSaves time compared with adding aftermarket LSD fluid\u003c\/li\u003e\n  \u003cli\u003eCompatible with most service intervals where GL-5 oils are specified\u003c\/li\u003e\n  \u003cli\u003eVerify OEM recommendations for unique LSD systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this oil in my transmission or transaxle?\u003c\/h3\u003e\n\u003cp\u003eThis formulation is designed specifically for differentials and hypoid gear sets. Its high level of slipperiness may interfere with synchronizer function in many manual transmissions and transaxles, so it is generally not recommended for those applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot recommended for most manual transmissions or transaxles\u003c\/li\u003e\n  \u003cli\u003eMay cause shifting problems if used where synchronizers need higher friction\u003c\/li\u003e\n  \u003cli\u003eIntended primarily for rear and front differentials with hypoid gears\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle service manual before alternative uses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich specifications and vehicle types is this oil compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe oil meets several industry and military specs as well as Chrysler MS-9763, making it a versatile option for many cars, trucks and racing applications. It is commonly used as a replacement for conventional 80W90 or SAE 90 fluids when GL-5 protection and synthetic performance are desired.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAPI GL-5 level protection for extreme pressure environments\u003c\/li\u003e\n  \u003cli\u003eApproved against specifications like GL-6, MT-1 and MIL-L-2105E where applicable\u003c\/li\u003e\n  \u003cli\u003eSuitable as an upgrade from conventional 80W90\/SAE 90 oils\u003c\/li\u003e\n  \u003cli\u003ePopular with performance, racing and heavy-duty automotive differentials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This product is aimed at car and light-truck owners, performance enthusiasts and mechanics who need a robust, synthetic gear oil for hypoid differentials—especially when clutch-type limited slip compatibility is desired without adding separate friction modifiers. It’s also a good choice for anyone seeking better thermal and load-carrying performance than conventional 80W90 oils, provided the vehicle’s service manual allows GL-5 synthetic lubricants.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is additional friction modifier required for limited slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Usually no—this Red Line 75W90 contains friction modifiers suitable for most clutch-type LSDs, but verify OEM recommendations for your specific unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Its slipperiness may harm synchronizers; it’s formulated for differentials, not most manual transmissions or transaxles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48081350295710,"sku":"B0BN72C456","price":104.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-75w90-front-packaging.jpg?v=1785800280"},{"product_id":"red-line-75w90-gl-5-synthetic-gear-oil-1-gallon-hypoid-lsd-ready-with-built-in-friction-modifiers","title":"Red Line 75W90 GL-5 Synthetic Gear Oil – 1 Gallon, Hypoid LSD-Ready with Built-In Friction Modifiers","description":"\u003cp\u003e\u003cstrong\u003eRed Line 75W90 GL-5 synthetic gear oil is a premium hypoid differential lubricant formulated with built-in friction modifiers for clutch-type limited slip differentials, supplied here in a 1‑gallon container.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis single-gallon offering from Red Line provides a high-performance synthetic gear oil suitable for many passenger cars, light trucks and racing vehicles that specify API GL-5 or similar service levels. It replaces SAE 90 and 80W90 differentials in most applications, and includes additive chemistry to improve engagement in clutch-type limited slip differentials without always needing separate friction modifiers. Note: it is intentionally very slippery and is not recommended for most manual transmissions or transaxles where synchronizer compatibility is required.\u003c\/p\u003e\n\n\u003ch3\u003eWill this gear oil work in my limited slip differential?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line 75W90 GL-5 is formulated with additional friction modifiers to be compatible with many clutch-type limited slip (LSD) differentials, reducing the need for separate additives. Still, because LSD designs vary, check your vehicle manufacturer’s requirements or consult your differential builder before switching oils.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes built-in friction modifiers for most clutch-type LSDs.\u003c\/li\u003e\n  \u003cli\u003eWorks as a direct replacement for many 80W90 or SAE 90 specs.\u003c\/li\u003e\n  \u003cli\u003eCompatible with API GL-5, GL-6 and MIL-L-2105E specifications.\u003c\/li\u003e\n  \u003cli\u003eMay not replace manufacturer-required specialty fluids for some limited slip systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil protect gears under high load and racing conditions?\u003c\/h3\u003e\n\n\u003cp\u003eThe synthetic base stocks and high-pressure additives give strong film strength to protect hypoid gear teeth under extreme loads and shock conditions found in performance driving. Red Line’s formulation resists thermal breakdown and reduces wear, helping bearings and gear surfaces last longer under stress.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh film strength for hypoid and spiral-bevel gears.\u003c\/li\u003e\n  \u003cli\u003eResists shearing and thermal degradation during heavy use.\u003c\/li\u003e\n  \u003cli\u003eCompatible with MT-1 specification for severe-duty service.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain gear and bearing protection at elevated temperatures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this in my manual transmission or transaxle?\u003c\/h3\u003e\n\n\u003cp\u003eNo — this product is not recommended for most manual transmissions or transaxles where synchronizers rely on a more viscous or tacky oil. Its low friction characteristics can cause shifting problems or synchronizer mesh issues in many passenger-vehicle gearboxes.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDesigned primarily for differentials, not for synchronizer-equipped transmissions.\u003c\/li\u003e\n  \u003cli\u003eExtreme slipperiness may impair shift feel or cause wear in synchronizers.\u003c\/li\u003e\n  \u003cli\u003eAlways follow vehicle manufacturer fluid specifications for gearboxes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich specifications and vehicles are supported by this fluid?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line 75W90 meets a wide range of industry specifications and fits thousands of applications across passenger cars, light trucks and race vehicles. It is a suitable replacement when your differential calls for API GL-5, GL-6, MIL-L-2105E, SAE J2360 or Chrysler MS-9763, and often replaces an 80W90 or SAE 90 recommendation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAPI GL-5 and GL-6 compatibility listed.\u003c\/li\u003e\n  \u003cli\u003eMeets MIL-L-2105E and SAE J2360 service levels.\u003c\/li\u003e\n  \u003cli\u003eApproved substitute for Chrysler MS-9763 where specified.\u003c\/li\u003e\n  \u003cli\u003ePopular across OEM differentials and aftermarket performance builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Installers, tuners and owners who demand durable, high-performance differential protection—especially for hypoid gears and clutch-type limited slip differentials—will benefit from Red Line’s synthetic 75W90. It’s a common choice for racers, weekend drivers with modified drivetrains, and anyone replacing 80W90 or SAE 90 differentials who needs better thermal stability and wear resistance. Avoid using it in most manual transmissions or transaxles unless your manufacturer explicitly approves GL-5 synthetic oils.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W90 suitable for all limited slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It contains friction modifiers for many clutch-type LSDs, but check your differential maker’s requirements; some systems require specific fluids.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in my manual transmission?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this GL-5 synthetic is too slippery for most manual transmissions and may cause synchronizer shifting problems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48081462362270,"sku":"B000J3ASP0","price":196.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/redline-75w90-front-label.jpg?v=1785805675"},{"product_id":"red-line-two-stroke-racing-synthetic-oil-gallon-ester-base-low-residue-formula","title":"Red Line Two-Stroke Racing Synthetic Oil, Gallon — Ester-Base Low-Residue Formula","description":"\u003cp\u003e\u003cstrong\u003eRed Line 40605 is a gallon of synthetic two-stroke racing oil engineered to deliver cleaner combustion, stronger film protection, and measurable power gains for motorcycles, snowmobiles, marine rigs, and karts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt from high-performance ester base stocks, this two-cycle formula is used in both race and daily applications where low residue and reliable lubrication matter. It’s designed to work in premix and injection systems, resist high-temperature deposit formation, and is compatible with modern reformulated fuels. Racers and enthusiasts choose it for improved ring and piston cleanliness, reduced plug fouling, and dyno-proven power increases under extended load.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line 40605 improve engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe formulation prioritizes strong lubricating film and low carbon residue to maintain combustion chamber and exhaust port cleanliness during demanding runs. On chassis dynos and back-to-back testing this oil has delivered consistent power gains while keeping moving parts better protected.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEster-base chemistry increases film strength and metal affinity.\u003c\/li\u003e\n  \u003cli\u003eLow carbon output cuts plug fouling and visible smoke.\u003c\/li\u003e\n  \u003cli\u003eDyno-proven 3–5% power gains under extended operation.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain ring and piston crown cleanliness for stable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat mixing ratios and systems is it suitable for?\u003c\/h3\u003e\n\u003cp\u003eRed Line 40605 is versatile: recommended at 50:1 for many high-performance applications but effective up to 100:1 depending on engine needs and conditions. It is labeled for both two-stroke race and kart use while sharing the same core chemistry, so it functions reliably in premix and oil-injection setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuggested starting ratio: 50:1 for balanced lubrication and cleanliness.\u003c\/li\u003e\n  \u003cli\u003eUsable at leaner ratios up to 100:1 when conditions allow.\u003c\/li\u003e\n  \u003cli\u003eCompatible with premix and oil-injection systems without modification.\u003c\/li\u003e\n  \u003cli\u003eWorks well with reformulated fuels commonly found today.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil reduce exhaust smoke and maintenance frequency?\u003c\/h3\u003e\n\u003cp\u003eYes—the synthetic ester base and low-residue additives reduce carbon buildup and visible smoke compared with many traditional oils. Cleaner combustion components translate to less frequent plug cleaning and fewer deposits on ports and chamber surfaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow carbon residue technology minimizes plug fouling.\u003c\/li\u003e\n  \u003cli\u003eReduced smoke improves visibility and environmental footprint.\u003c\/li\u003e\n  \u003cli\u003eHigh-temp stability lowers deposit formation on critical parts.\u003c\/li\u003e\n  \u003cli\u003eHelps extend intervals between routine carbon-related maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil protect under racing conditions?\u003c\/h3\u003e\n\u003cp\u003eDesigned for extreme duty, Red Line 40605 sustains lubricity and thermal stability during long, high-load runs to protect rings, pistons, and cylinder walls. Its scuff protection and high film strength prevent metal-to-metal contact even at elevated temperatures, helping preserve engine components under repeated stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-temp additives resist breakdown and deposit formation.\u003c\/li\u003e\n  \u003cli\u003eExceptional scuff protection under heavy loads and high RPMs.\u003c\/li\u003e\n  \u003cli\u003eProvides castor-like lubrication benefits with far greater cleanliness.\u003c\/li\u003e\n  \u003cli\u003eWorks consistently over longer runs, supporting sustained power output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line 40605 Two-Stroke Racing Synthetic Oil is aimed at racers, serious enthusiasts, and anyone running two-stroke motorcycles, snowmobiles, karts, or marine outboards who want a cleaner-burning, high-film-strength oil. It’s a solid choice when you need reliable protection at high temperature, lower carbon buildup, and the ability to tune mix ratios for power or economy. Choose this gallon when you want a professional-grade two-cycle oil that performs in competition and day-to-day use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Red Line 40605 be used in oil-injection systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The formula is compatible with both premix and oil-injection systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What mix ratio should I start with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Begin at the recommended 50:1; you can go up to 100:1 depending on engine needs and conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48081462427806,"sku":"B000LNEG8S","price":220.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-40605-front-gallon.jpg?v=1785805667"},{"product_id":"red-line-mt-90-75w-90-gl-4-manual-transmission-lubricant-1-quart-4-pack-smooth-shifting-synchro-protection","title":"Red Line MT-90 75W-90 GL-4 Manual Transmission Lubricant — 1 Quart (4 Pack), Smooth Shifting \u0026 Synchro Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line MT-90 75W-90 GL-4 is a high-performance manual transmission and transaxle lubricant formulated for smooth shifting, extended synchronizer life, and safe use with brass synchros.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngineered for manual gearboxes and transaxles that call for GL-1, GL-3, or GL-4 fluids, Red Line MT-90 provides a balanced friction profile that reduces notchy shifts and preserves synchronizers without the reactive sulfurs found in many GL-5 oils. It’s designed for drivers and technicians who want dependable gear protection, consistent shifting in a range of temperatures, and compatibility where GL-4 specifications are required.\u003c\/p\u003e\n\n\u003ch3\u003eHow does MT-90 improve shifting performance?\u003c\/h3\u003e\n\u003cp\u003eMT-90 is blended to deliver the proper synchronizer coefficient of friction so shifts are smooth and predictable, even during cold starts. That reduces grinding and hesitation and helps maintain the original shift quality of the transmission.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized friction for quicker, cleaner shifts\u003c\/li\u003e\n  \u003cli\u003eFormulated to avoid notchy or sticky shifting when cold\u003c\/li\u003e\n  \u003cli\u003eHelps protect synchronizers and shift forks from premature wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this product protect gears and synchronizers?\u003c\/h3\u003e\n\u003cp\u003eThis GL-4-rated lubricant offers strong gear protection and is safer for brass or bronze synchronizers because it avoids the corrosive reactive sulfurs found in GL-5 formulations. Regular use helps preserve synchro life and reduces metal wear in sliding and hypoid gear components where GL-4 is specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces gear wear under normal and severe driving\u003c\/li\u003e\n  \u003cli\u003eSafe for brass\/bronze synchronizers and common synchromesh systems\u003c\/li\u003e\n  \u003cli\u003eRecommended where GL-1, GL-3, or GL-4 specifications apply\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich viscosities and applications does MT-90 support?\u003c\/h3\u003e\n\u003cp\u003eMT-90 is a 75W-90 viscosity oil suitable for many manual transmissions, transaxles, and differentials that call for 75W, 80W, SAE 40, 10W-40, or 15W-40 gear or motor oils. Check your vehicle’s service manual to confirm compatibility, particularly for systems specifying GL-4 gear oils or special synchromesh fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eViscosity: 75W-90 for a broad temperature range\u003c\/li\u003e\n  \u003cli\u003eWorks where special synchromesh fluids are required\u003c\/li\u003e\n  \u003cli\u003eCompatible with applications calling for GL-1, GL-3, and GL-4\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use this 1-quart pack for maintenance?\u003c\/h3\u003e\n\u003cp\u003eThe 1-quart size is convenient for top-ups, partial fills, or servicing multiple small gearboxes. For full replacements consult capacity specs; many differentials and boxes require more than one quart, but this packaging makes it simple to add precise amounts during service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1-quart bottles are ideal for precise top-ups and pilot refills\u003c\/li\u003e\n  \u003cli\u003eBuy a multi-pack (4 pack) for servicing several gearboxes or full fills\u003c\/li\u003e\n  \u003cli\u003eStore tightly capped, out of direct sunlight, at moderate temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line MT-90 75W-90 GL-4 MTL suits mechanics, DIY enthusiasts, and fleet operators who need a reliable manual transmission lubricant that preserves synchronizer function while protecting gears under varied driving conditions. It’s especially useful where manufacturers specify GL-4 or special synchromesh fluids and where brass or bronze synchronizers must be protected. If your vehicle’s service manual lists 75W-90 or GL-4 gear oil, MT-90 is a strong candidate to maintain shift quality and component longevity without introducing reactive sulfurs common in some other gear oils.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is MT-90 safe for brass synchronizers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. MT-90 lacks the reactive sulfurs in many GL-5 oils and is safe for brass\/bronze synchros.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use MT-90 for cold-weather shifting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 75W-90 formulation improves cold-shift performance and reduces notchy shifting.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48081463443614,"sku":"B000QFN326","price":169.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-mt90-front-packaging.jpg?v=1785805723"},{"product_id":"red-line-full-synthetic-d6-automatic-transmission-fluid-1-gallon-dexron-vi-mercon-high-thermal-stability","title":"Red Line Full Synthetic D6 Automatic Transmission Fluid (1 Gallon) — Dexron‑VI\/Mercon, High Thermal Stability","description":"\u003cp\u003e\u003cstrong\u003eRed Line 30705 Full Synthetic D6 Automatic Transmission Fluid (1 gallon) is a high-performance, fully synthetic ATF engineered for modern automatic and manual transmissions requiring Dexron‑VI, Mercon, Toyota WS, Honda DW‑1 and other OEM specifications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis formulation is designed to resist breakdown at elevated temperatures, retain stable viscosity, and provide the specific frictional properties many manufacturers specify for shift quality and longevity. Red Line’s D6 blend targets both automatic transmissions and gear applications where API GL‑4 compatibility is useful, while minimizing oxidation, volatility and varnish build-up that can impair clutch and valve operation.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this ATF perform under high temperatures?\u003c\/h3\u003e\n\u003cp\u003eRed Line D6 is engineered to resist thermal degradation and lower volatility so it holds viscosity and resists oxidation even during sustained high‑heat operation. That stability helps preserve internal components and reduces varnish and deposit formation on valves and clutch surfaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved thermal stability to maintain proper viscosity\u003c\/li\u003e\n  \u003cli\u003eReduced oxidation minimizes deposit and varnish formation\u003c\/li\u003e\n  \u003cli\u003eLower volatility reduces top‑off frequency and fluid loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and specifications does this fluid cover?\u003c\/h3\u003e\n\u003cp\u003eThis ATF is formulated to meet a broad set of OEM and industry requirements, making it suitable for many modern automatic transmissions and some manual gearboxes. It lists compatibility with Dexron‑VI, MerconSP\/MerconLV, Honda DW‑1, Toyota WS, Mercedes NAG‑2, and several ZF specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets Dexron‑VI and multiple Mercon family specifications\u003c\/li\u003e\n  \u003cli\u003eApproved for Honda DW‑1 and Toyota WS applications\u003c\/li\u003e\n  \u003cli\u003eCompatible with Mercedes NAG‑2 and ZF LG‑6\/6+ and 8 fluid requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill Red Line D6 protect shift quality and clutch surfaces?\u003c\/h3\u003e\n\u003cp\u003eYes — the fluid is blended to provide the frictional characteristics OEMs expect, helping maintain consistent shift feel and clutch slipping behavior over service life. Stable friction properties reduce chatter and inconsistent shifts compared with degraded or mismatched fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for OEM‑style friction performance\u003c\/li\u003e\n  \u003cli\u003eHelps prevent clutch glazing and valve sticking\u003c\/li\u003e\n  \u003cli\u003eConsistent shift quality across operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the practical benefits for maintenance and longevity?\u003c\/h3\u003e\n\u003cp\u003eUsing a fluid with high oxidation resistance and low volatility reduces the rate of fluid change due to breakdown or loss, helping extend service intervals and protect transmission internals. It also supports gear applications that require API 70W\/75W and GL‑4 performance where specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLonger fluid life thanks to reduced thermal breakdown\u003c\/li\u003e\n  \u003cli\u003eLess varnish and sludge buildup on valves and clutches\u003c\/li\u003e\n  \u003cli\u003eVersatile cross‑compatibility reduces the need for multiple products\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 30705 Full Synthetic D6 ATF is aimed at owners and technicians of late‑model cars, light trucks and performance vehicles that require modern ATF specifications (Dexron‑VI, Mercon variants, Toyota WS, Honda DW‑1, Mercedes NAG‑2, ZF LG series) and for anyone wanting a stable, long‑lasting synthetic fluid to reduce varnish, maintain shift quality and support transmissions and compatible manual gearboxes. It’s also a good choice for shops and enthusiasts seeking a single high‑performance fluid that covers multiple OEM requirements without compromising protection.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line D6 in transmissions specifying Dexron‑VI?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Red Line 30705 is formulated to meet Dexron‑VI requirements and is compatible with many modern automatic transmissions requiring that spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this fluid suitable for manual gearboxes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: In some cases yes; D6 also satisfies API GL‑4 requirements and can be used where GL‑4 compatible ATF is specified. Check your manufacturer's recommendation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48081476288670,"sku":"B00YKHR46C","price":165.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-30705-front-label.jpg?v=1785806318"},{"product_id":"red-line-si-1-fuel-system-cleaner-15-oz-12-pack-concentrated-deposit-remover-fuel-stabilizer","title":"Red Line SI-1 Fuel System Cleaner 15 oz, 12-Pack — Concentrated Deposit Remover \u0026 Fuel Stabilizer","description":"\u003cp\u003e\u003cstrong\u003eRed Line 60103 SI-1 is a concentrated 15-ounce fuel system cleaner designed to remove deposits and protect fuel-system components when used one bottle per tank.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngine deposits in injectors, carburetors, valves and combustion chambers reduce efficiency and throttle response over time. Red Line SI-1 combines high- and low-temperature detergents in a single-treatment formula to clean these areas, improve fuel stability, and limit gum and varnish buildup. This listing is for a 12-pack of 15-ounce bottles, sized to treat multiple tanks or a fleet of vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line SI-1 clean injectors and combustion chambers?\u003c\/h3\u003e\n\u003cp\u003eSI-1 uses a concentrated detergent chemistry that dissolves and disperses carbon, varnish, and gum from fuel system surfaces. When added to a full tank of gasoline, it moves through the fuel delivery system to break loose deposits and carry them through combustion and the exhaust system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTargets injector tips and spray patterns to restore atomization\u003c\/li\u003e\n  \u003cli\u003eLoosens combustion chamber carbon for cleaner burn\u003c\/li\u003e\n  \u003cli\u003eFormulated for both high-temperature and low-temperature deposits\u003c\/li\u003e\n  \u003cli\u003eOne 15-ounce bottle treats one full tank for near-complete cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this improve fuel stability and reduce varnish?\u003c\/h3\u003e\n\u003cp\u003eYes — SI-1 contains stabilizing agents that slow oxidation and degradation of gasoline, which helps prevent gum and varnish from forming during storage or regular use. Regular treatments reduce fuel breakdown that can cause sticky deposits on metal surfaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhances gasoline stability during storage or infrequent use\u003c\/li\u003e\n  \u003cli\u003eMinimizes new gum and varnish formation after treatment\u003c\/li\u003e\n  \u003cli\u003eSuitable for seasonal storage or long idle periods\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use this product safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eUse one 15-ounce bottle per full gasoline tank for most passenger cars and light trucks, pouring the contents into the fuel tank before refilling. Follow basic safety: avoid open flames, funnel spillage into approved containers, and store bottles upright in a cool, ventilated area.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePour one bottle into tank, then refuel immediately to mix\u003c\/li\u003e\n  \u003cli\u003eDo not overuse — one bottle per tank delivers recommended concentration\u003c\/li\u003e\n  \u003cli\u003eStore in original container away from heat and ignition sources\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs Red Line SI-1 compatible with all gasoline engines?\u003c\/h3\u003e\n\u003cp\u003eSI-1 is formulated for gasoline-powered engines including EFI (electronic fuel injection) and carbureted systems. It cleans across common fuel-system types without modifying engine hardware, but always check manufacturer guidance for specialized or warranty-sensitive equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSafe for EFI and carburetor-equipped gasoline engines\u003c\/li\u003e\n  \u003cli\u003eEffective for older engines with heavy deposits and modern engines with precision injectors\u003c\/li\u003e\n  \u003cli\u003eNot intended as an additive for diesel or other fuel types\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 60103 SI-1 is aimed at vehicle owners, shop technicians, and fleet managers who want a concentrated, single-bottle treatment to restore fuel-system cleanliness and improve fuel stability. It's well-suited for routine maintenance, performance tuning prep, seasonal storage, and any situation where reducing deposits and maintaining consistent fuel behavior matters.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much fuel does one 15-ounce bottle treat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One 15-ounce bottle is formulated to treat one full gasoline tank for most passenger cars and light trucks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use SI-1 in carbureted engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SI-1 is compatible with both carburetors and fuel-injected gasoline engines for deposit removal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082560516254,"sku":"B000T9RLT0","price":389.04,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si1-front-label.jpg?v=1785811532"},{"product_id":"red-line-v-twin-transmission-oil-with-shockproof-4-quart-pack-jaso-ma-ma2-quieter-shifts","title":"Red Line V-Twin Transmission Oil with Shockproof — 4 Quart pack, JASO MA\/MA2, quieter shifts","description":"\u003cp\u003e\u003cstrong\u003eRed Line 42804 V-Twin Transmission Oil with Shockproof is a purpose-built 4-quart transmission fluid engineered to reduce clutch and gearbox shock, quiet V-twin shifting, and preserve gear life in powersports applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for motorcycles, ATVs, UTVs, and other powersports machines that use wet clutches and high-load gearsets, this formula combines a robust base stock with Red Line's Shockproof additive package. It targets the loud shift clunks and high operating temperatures common to V‑twin transmissions while maintaining the friction characteristics required for JASO MA\/MA2 systems. The 4-quart pack is convenient for routine service or topping off during seasonal maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil reduce the 'clunk' on V-twin gearboxes?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line's Shockproof technology is engineered to absorb impact energy between gear teeth and clutch plates, resulting in noticeably quieter and smoother shifts. Rather than changing mechanical tolerances, the fluid forms a resilient film that cushions gear engagement and dampens abrupt load transfers.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eShockproof additive package reduces impact noise at shift engagement.\u003c\/li\u003e\n  \u003cli\u003eRobust film strength prevents metal-to-metal shock on heavy loads.\u003c\/li\u003e\n  \u003cli\u003eFormulated for wet-clutch compatibility to avoid slipping while dampening shocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this transmission oil help operating temperature and wear?\u003c\/h3\u003e\n\n\u003cp\u003eThis fluid improves thermal stability and resists throw-off at higher RPMs, helping maintain thicker oil films between gear teeth under sustained loads. By reducing temperature spikes and sustaining lubrication, it supports longer component life without relying on higher-viscosity grades that can compromise shifting.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh-temperature stability reduces viscosity breakdown during long rides.\u003c\/li\u003e\n  \u003cli\u003eResists fling-off from rapidly spinning gears to keep lubrication where it’s needed.\u003c\/li\u003e\n  \u003cli\u003eThicker protective films lower metal-to-metal wear under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs Red Line 42804 compatible with my motorcycle or powersports vehicle?\u003c\/h3\u003e\n\n\u003cp\u003eThe oil is formulated for a broad range of powersports applications, including motorcycles with wet clutches, ATVs, UTVs, and side-by-sides that call for JASO MA\/MA2 fluids. Always check your owner’s manual for the recommended specification and capacity; this product is intended to meet the frictional and thermal needs of many modern powersports transmissions.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSuitable for JASO MA\/MA2 wet-clutch systems and many powersports gearboxes.\u003c\/li\u003e\n  \u003cli\u003eRecommended for V-twin motorcycles, sportbikes, ATVs, UTVs, and side-by-sides.\u003c\/li\u003e\n  \u003cli\u003eSold in a 4-quart container for easy service and correct fill volumes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will this oil change my riding experience on the road or trail?\u003c\/h3\u003e\n\n\u003cp\u003eRiders typically notice reduced shift noise and smoother engagement during acceleration or downshifting, especially in V‑twin machines that are prone to gearbox clunks. Beyond comfort, the improved lubrication and thermal behavior translate to steadier performance during long trips or aggressive riding where heat and load are factors.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSmoother, quieter upshifts and downshifts for a more refined ride.\u003c\/li\u003e\n  \u003cli\u003eImproved consistency under prolonged high-load or high-temperature conditions.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain clutch engagement characteristics while reducing mechanical shock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line 42804 is aimed at riders and mechanics who want to reduce transmission shock and shift noise in V‑twin and other powersports gearboxes without sacrificing clutch performance. If you maintain motorcycles, ATVs, UTVs, or side-by-sides that demand JASO MA\/MA2 compatibility and you perform regular servicing, this 4-quart package provides a professional-grade fluid that prioritizes both protection and quieter operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in a motorcycle that requires JASO MA2?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Red Line 42804 is formulated for JASO MA\/MA2 wet-clutch applications, but confirm your owner's manual before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much does the 4-quart container cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The 4-quart bottle is sized for full service or multiple top-offs; check your vehicle's transmission capacity for exact fill.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082637160606,"sku":"B00HUSNOCQ","price":194.65,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-42804-front-label.jpg?v=1785811716"},{"product_id":"red-line-si-1-complete-fuel-system-cleaner-15-oz-6-pack-restores-injectors-prevents-corrosion","title":"Red Line SI-1 Complete Fuel System Cleaner 15 oz (6-Pack) – Restores Injectors \u0026 Prevents Corrosion","description":"\u003cp\u003e\u003cstrong\u003eRed Line SI-1 Complete Fuel System Cleaner is a concentrated 15-ounce fuel additive that removes deposits from injectors, carburetors, valves and combustion chambers while helping prevent fuel-system corrosion.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for gasoline engines, this concentrated treatment restores more efficient fuel burn and helps reduce gum and varnish build-up that can impair performance and economy. Each 15-ounce bottle treats a full tank for most vehicles; this listing includes a six-pack so you can treat multiple fill-ups or service several vehicles. The formula uses a blend of detergents optimized for both high and low temperatures to clean delicate fuel-system components without disassembly.\u003c\/p\u003e\n\n\u003ch3\u003eHow does SI-1 remove deposits from injectors and carburetors?\u003c\/h3\u003e\n\u003cp\u003eThe formula uses a mix of high- and low-temperature detergents that dissolve carbon, varnish and gum deposits as they travel through the fuel system. Regular use breaks down build-up that restricts spray patterns and fuel flow, restoring more consistent atomization and throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConcentrated detergents target injector spray tips and carburetor jets.\u003c\/li\u003e\n  \u003cli\u003eWorks during normal operation—no engine teardown required.\u003c\/li\u003e\n  \u003cli\u003eHelps recover lost performance caused by clogged passages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this cleaner protect against fuel-system corrosion?\u003c\/h3\u003e\n\u003cp\u003eYes—SI-1 includes corrosion-inhibiting components that coat metal surfaces and reduce oxidation risk from moisture and ethanol in modern fuels. This protective action helps extend component life and maintains tighter tolerances in fuel pumps and lines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNeutralizes corrosive residues from fuel and water exposure.\u003c\/li\u003e\n  \u003cli\u003eLeaves a thin protective film on metal parts inside the system.\u003c\/li\u003e\n  \u003cli\u003eCompatible with typical gasoline blends, including ethanol blends.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use a 15-ounce bottle for best results?\u003c\/h3\u003e\n\u003cp\u003ePour one 15-ounce bottle into a nearly full fuel tank for most cars and light trucks; this delivers a recommended concentration for thorough cleaning in one treatment. For very large tanks or severe deposits, follow label guidance or repeat treatment at the next fill-up.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one bottle per standard tank for most passenger vehicles.\u003c\/li\u003e\n  \u003cli\u003eBest used before long trips or when fuel economy drops.\u003c\/li\u003e\n  \u003cli\u003eSix-pack lets you maintain treatment intervals or service multiple vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs SI-1 safe for modern engine components and emissions systems?\u003c\/h3\u003e\n\u003cp\u003eThe cleaner is formulated to be safe for fuel-injection systems, carburetors, oxygen sensors and catalytic converters when used as directed. It targets deposits without stripping necessary lubricants or altering emissions-control devices.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for compatibility with fuel system sensors and catalysts.\u003c\/li\u003e\n  \u003cli\u003eDoes not require engine disassembly for cleaning action.\u003c\/li\u003e\n  \u003cli\u003eFollow label instructions to avoid overconcentration in small engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line SI-1 Complete Fuel System Cleaner is aimed at vehicle owners, fleet managers and performance enthusiasts who want a concentrated, easy-to-use treatment to restore fuel-system efficiency, reduce deposit-related drivability issues and add corrosion protection. It’s useful for regular maintenance schedules, periodic performance tune-ups, or prep before long-distance travel. If you operate gasoline engines with fuel injectors or carburetors and seek a professional-grade cleaner that treats an entire tank, this six-pack delivers multiple treatments for consistent upkeep.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use Red Line SI-1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one 15 oz bottle per tank as needed; for routine maintenance, treat every 3,000–5,000 miles or at first signs of performance loss.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is SI-1 safe with ethanol-blended fuels?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SI-1 is compatible with common ethanol blends and includes additives that help reduce corrosion from moisture and ethanol.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082681364638,"sku":"B00COSQLKO","price":200.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si1-front-packaging.jpg?v=1785811861"},{"product_id":"red-line-synthetic-automatic-transmission-fluid-atf-1-gallon-d4-dexron-mercon-compatible-gl-4-gear-protection","title":"Red Line Synthetic Automatic Transmission Fluid (ATF) 1 Gallon — D4, Dexron\/Mercon Compatible, GL-4 Gear Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 30505 D4 Synthetic Automatic Transmission Fluid (1 gallon) is a high-performance, multi-application ATF formulated to protect gears, improve shifting in cold conditions, and serve both automatic and many manual transmissions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis full-synthetic transmission fluid blends advanced additives and a controlled friction profile to deliver reliable protection and smooth operation across a wide range of vehicles. Designed for use where Dexron and Mercon-type fluids are specified, it also provides GL-4 level gear protection that makes it suitable for some manual gearboxes and transaxles. The formula helps preserve synchros and reduce wear while maintaining consistent performance in hot and cold climates.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this ATF improve shifting and cold-weather starts?\u003c\/h3\u003e\n\u003cp\u003eThe synthetic base oils and balanced slipperiness lower internal drag at low temperatures so shifts are quicker and less abrupt when the transmission is cold. Additives stabilize film strength so protection is present during the initial warm-up period.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFriction modifiers tuned for smooth clutch engagement.\u003c\/li\u003e\n  \u003cli\u003eStable viscosity for consistent hydraulic response.\u003c\/li\u003e\n  \u003cli\u003eEnhanced low-temperature fluidity for easier cold starts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan Red Line D4 be used in manual transmissions or transaxles?\u003c\/h3\u003e\n\u003cp\u003eYes — while optimized for automatic transmissions, this fluid offers GL-4 level gear protection and has been used successfully in several manual transmissions and transaxles, especially where manufacturers allow ATF or require GL-4 gear oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with many T-5, T-45 and T-56 applications.\u003c\/li\u003e\n  \u003cli\u003eProvides synchro protection for smoother gear changes.\u003c\/li\u003e\n  \u003cli\u003eUseful as an alternative where OEM allows ATF in manuals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich makes and models accept this fluid? Where does it replace OEM specs?\u003c\/h3\u003e\n\u003cp\u003eRed Line D4 is formulated to work where older and current Dexron and Mercon specifications are called for, and it matches many factory fluids across Asian, European, and domestic vehicles. It is widely adopted for Toyota Type T-III\/T-IV, Honda ATF-Z1 applications, Nissan Matic types, Mazda M-V, and several BMW and Audi\/VW automatic units.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAcceptable in Toyota, Honda, Nissan, Mazda automatic transmissions listed above.\u003c\/li\u003e\n  \u003cli\u003eOften compatible with BMW and Volkswagen\/Audi automatic systems.\u003c\/li\u003e\n  \u003cli\u003eMeets performance expectations for Dexron III, II, Mercon and Mercon V use-cases.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance benefits and protections does this fluid deliver?\u003c\/h3\u003e\n\u003cp\u003eThe formulation focuses on wear reduction, oxidation resistance, and stable hydraulic behavior to preserve transmission life and maintain consistent shifting quality over service intervals. It also defends gears and synchros against scoring and wear under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLong-lasting anti-wear additives for gear and synchro protection.\u003c\/li\u003e\n  \u003cli\u003eOxidation and thermal stability to resist breakdown at high temperatures.\u003c\/li\u003e\n  \u003cli\u003eVersatile compatibility that reduces the need for multiple specialty fluids.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 30505 D4 Synthetic ATF is aimed at vehicle owners, enthusiasts, and professional technicians who want a versatile, high-quality transmission fluid that covers a broad range of automatic and some manual applications. It’s particularly valuable for those maintaining older vehicles that call for Dexron\/Mercon-type fluids, drivers in cold climates who need reliable low-temperature shifting, and shops seeking a single fluid that can serve multiple transmission types without compromise.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line D4 ATF compatible with Dexron or Mercon systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated to be used where Dexron II\/III and Mercon\/Mercon V fluids are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this ATF be used in manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: In many cases yes; it provides GL-4 gear protection and is suitable for specific manuals and transaxles permitted by OEM guidance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082738118814,"sku":"B008I3IYGS","price":165.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-30505-front-label.jpg?v=1785812597"},{"product_id":"red-line-75w80-gl-4-manual-transmission-gear-oil-4-quart-pack-synchro-friendly-protection","title":"Red Line 75W80 GL-4 Manual Transmission Gear Oil — 4 Quart Pack, Synchro-Friendly Protection","description":"\u003cstrong\u003eRed Line 50204 SAE 75W80 is a GL-4 rated manual transmission and transaxle lubricant formulated to protect gears and synchromesh systems while improving shift feel.\u003c\/strong\u003e\n\n\u003cp\u003eThis high-performance gear oil is engineered for manual transmissions and transaxles that specify GL-1, GL-3, or GL-4 performance. It uses a balanced friction formulation that avoids the overly slippery behavior of some synthetics, delivering consistent synchronizer engagement and extended component life. Packaged as four 1‑quart bottles, it’s suited for DIY servicing and professional shops servicing compatible domestic and import vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve shifting and synchronizer life?\u003c\/h3\u003e\n\u003cp\u003eThe friction characteristics of this 75W80 formulation are tuned to provide reliable synchromesh bite without excessive drag. That balanced level of friction reduces gear clash and helps synchronizers match speeds smoothly, which can translate to crisper shifts and reduced wear over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eControlled friction for positive synchronizer engagement\u003c\/li\u003e\n  \u003cli\u003eReduces shift grinding and false neutrals\u003c\/li\u003e\n  \u003cli\u003eFormulated to extend synchro and gear life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for brass synchronizers and older gearsets?\u003c\/h3\u003e\n\u003cp\u003eYes — this product meets GL-4 requirements and avoids the reactive sulfur compounds common in GL-5 formulations that can attack yellow metals. It’s recommended when manufacturers call for GL-1 through GL-4 gear oils or when special synchromesh fluids are specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFree of aggressive sulfurs harmful to brass synchros\u003c\/li\u003e\n  \u003cli\u003eCompatible with older manual transmissions and classic gearsets\u003c\/li\u003e\n  \u003cli\u003eSuitable replacement where GL-4 is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and transmissions commonly use this lubricant?\u003c\/h3\u003e\n\u003cp\u003eThis Red Line 75W80 is popular across a wide range of cars and light trucks that require GL-4 performance. It’s commonly chosen for many European and Japanese manual gearboxes as well as specific truck transmissions that list compatible viscosities and GL-4 service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommonly used in BMW, Honda\/Acura, and late-model Mini Cooper manuals\u003c\/li\u003e\n  \u003cli\u003eSpecified for certain Land Rover\/Range Rover LT77S gearboxes\u003c\/li\u003e\n  \u003cli\u003eFits several Mitsubishi, Ford Focus, Dodge, Jeep NV-series truck transmissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is this product supplied and what are the service advantages?\u003c\/h3\u003e\n\u003cp\u003eOffered as a four-pack of one-quart bottles, the packaging supports multiple fluid changes or keeps a technician stocked for several jobs. The concentrated, high-performance formula aims to reduce component wear and maintain shift quality across a range of operating temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour 1-quart bottles for convenient dosing and storage\u003c\/li\u003e\n  \u003cli\u003eConsistent viscosity for reliable performance in normal driving ranges\u003c\/li\u003e\n  \u003cli\u003eRed Line engineering focused on protection and longevity since 1979\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Mechanics, performance-minded DIYers, and fleet technicians who service manual transmissions or transaxles that call for GL-1 through GL-4 oils will find this lubricant appropriate. It’s especially useful where brass synchronizers are present and where drivers want confident shifting without sacrificing protection. Always consult the vehicle’s service manual to confirm required viscosity and API\/GL ratings before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in a transmission that calls for GL-5?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This Red Line 75W80 is GL-4 and lacks the additives of GL-5; use only if the manufacturer permits GL-4.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many quarts does the pack include?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The product is sold as a four-pack of 1‑quart bottles, totaling four quarts.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082754699422,"sku":"B0041EDM6U","price":172.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-front-quart.jpg?v=1785813219"},{"product_id":"red-line-75w85-gl-5-full-synthetic-gear-oil-4-qt-hypoid-limited-slip-protection-low-temp-flow","title":"Red Line 75W85 GL-5 Full Synthetic Gear Oil 4 qt — Hypoid \u0026 Limited-Slip Protection, Low-Temp Flow","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50104 is a full-synthetic 75W85 GL-5 gear oil engineered to protect hypoid and limited-slip differentials while improving cold-flow and drivetrain efficiency.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDeveloped for high-performance and street-driven vehicles, this Red Line formulation combines a robust synthetic base with friction modifiers to work in clutch-type limited-slip differentials and conventional gearsets. It meets API GL-5\/GL-6 performance levels and offers stable viscosity across temperature swings, making it suitable for a wide range of passenger cars, trucks, and race transaxles that call for 75W\/80W gear oils.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this 75W85 oil help shifting and cold starts?\u003c\/h3\u003e\n\u003cp\u003eBecause the oil is engineered for excellent low-temperature flow, it reduces drag on gear teeth and synchronizers during cold starts. That improved flow helps manual transmissions and transaxles achieve smoother gear engagement when ambient temperatures are low.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-temperature pumpability for easier cold shifting\u003c\/li\u003e\n  \u003cli\u003eLow-viscosity formulation that preserves syncro compatibility\u003c\/li\u003e\n  \u003cli\u003eRapid film formation protects gears immediately after start-up\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil protect my differential under heavy loads or racing conditions?\u003c\/h3\u003e\n\u003cp\u003eThe full-synthetic base and high film strength provide exceptional protection under high loads and repeated shock loading typical of aggressive driving and racing. Its anti-foaming and thermal stability help maintain a protective lubricant film at elevated speeds and temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHighest available film strength to resist gear wear\u003c\/li\u003e\n  \u003cli\u003eFoam-resistant formulation for consistent lubrication at speed\u003c\/li\u003e\n  \u003cli\u003eThermally stable for extended service in demanding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this in limited-slip differentials and with seals designed for petroleum oils?\u003c\/h3\u003e\n\u003cp\u003eYes — this product contains friction modifiers intended for clutch-type limited-slip differentials, so most LSDs won’t require extra additive packs. It’s also compatible with seals that were designed for petroleum lubricants and can be mixed with other synthetic or petroleum gear oils when needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes friction modifiers suitable for many clutch-type LSDs\u003c\/li\u003e\n  \u003cli\u003eCompatible with petroleum and other synthetic gear oils\u003c\/li\u003e\n  \u003cli\u003eSeal-friendly formulation for OEM-style elastomers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and applications benefit most from Red Line 50104?\u003c\/h3\u003e\n\u003cp\u003eThis oil is widely used in late-model European, American and Japanese rear-drive differentials and is popular in many racing transaxles where 75W\/80W gear oils are specified. It’s intended for differentials, final drives and transfer cases where GL-5 performance and limited-slip capability are desirable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon in BMW, Mercedes-Benz, Lexus, Ford, GM, Toyota and Dodge differentials\u003c\/li\u003e\n  \u003cli\u003eSuitable for competition transaxles such as Hewland LD-200 and FTR sequential gearboxes\u003c\/li\u003e\n  \u003cli\u003eWorks for both street vehicles and track-use differentials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line 50104 75W85 full-synthetic gear oil is aimed at enthusiasts, professional racers and owners of rear-drive vehicles who need a robust GL-5 lubricant with excellent cold-flow, high film strength and limited-slip compatibility. Choose this product if you want a synthetic gear oil that reduces differential temperatures, improves longevity under load, and remains stable across a wide temperature range. It is not intended for some manual transmissions that require specific friction levels; verify manufacturer recommendations before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 50104 compatible with limited-slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It contains friction modifiers for most clutch-type LSDs, so additional additives are usually unnecessary.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I mix this with conventional gear oils?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it’s compatible with petroleum and other synthetics, but mixing may alter performance—follow manufacturer guidance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082760138910,"sku":"B01LOJT8UI","price":174.57,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50104-front-label-4qt.jpg?v=1785813413"},{"product_id":"red-line-20w-50-powersport-v-twin-motor-oil-powerpack-kit-1-powerpack-includes-transmission-primary-oils","title":"Red Line 20W-50 Powersport V-Twin Motor Oil Powerpack Kit — 1 Powerpack, Includes Transmission \u0026 Primary Oils","description":"\u003cstrong\u003eRed Line 90226 20W50 Powersport Motor Oil V-Twin 1 Powerpack Kit is a complete service bundle that supplies high-performance 20W-50 motor oil, transmission and primary oils, a fuel injection cleaner, and service accessories for many Big Twin motorcycles.\u003c\/strong\u003e\n\n\u003cp\u003eThis Powerpack is built to let owners of Evolution, Twin Cam, Milwaukee‑Eight and many V‑Twin bikes perform a professional-quality oil change with top-tier lubricants from Red Line. The kit gathers the core fluids plus a funnel, a sticker set and a branded cap so you have what you need for most routine maintenance jobs without sourcing individual bottles. Formulated for powersports use, the included 20W‑50 motor oil delivers shear‑stable protection and consistent viscosity under heavy loads and high temperatures.\u003c\/p\u003e\n\n\u003ch3\u003eWhich motorcycles does this Powerpack fit?\u003c\/h3\u003e\n\u003cp\u003eThe kit covers a wide range of Harley‑style V‑Twin models, including Evolution, Twin Cam and Milwaukee‑Eight platforms from recent years. It was designed around common capacities so one pack provides nearly all the oil required for a typical complete service on many models. Check your owner manual for exact capacities; some engines need an extra primary bottle for full fill.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCovers many 2007‑up Harley‑Davidson Twin‑Cam and Milwaukee‑Eight models\u003c\/li\u003e\n  \u003cli\u003eWorks for Evolution‑style engines and other V‑Twin designs listed by Red Line\u003c\/li\u003e\n  \u003cli\u003eMay require one extra primary bottle on some larger Twin Cam cases (see capacity)\u003c\/li\u003e\n  \u003cli\u003eIncludes transmission oil compatible with common wet clutch and gearbox setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fluids and accessories are included in the kit?\u003c\/h3\u003e\n\u003cp\u003eThis Powerpack bundles the essential oils for an engine, transmission and primary chain case plus a fuel injection cleaner and useful service accessories. The combination ensures fluid compatibility and eliminates the need to buy separate containers. Accessories help reduce mess and add a bit of convenience to the job.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive quarts of 20W‑50 motor oil formulated for powersport V‑Twin engines\u003c\/li\u003e\n  \u003cli\u003eOne quart of V‑Twin transmission oil featuring ShockProof protection\u003c\/li\u003e\n  \u003cli\u003eOne quart of primary chain case oil and one bottle of fuel injection cleaner\u003c\/li\u003e\n  \u003cli\u003eIncludes a funnel, a Red Line embroidered hat and a sticker kit for convenience\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does Red Line 20W‑50 protect engines under real riding conditions?\u003c\/h3\u003e\n\u003cp\u003eRed Line’s 20W‑50 is engineered for high temperature stability, resistance to shear and consistent film strength under heavy loads. That translates to reduced wear during extended highway runs, stop‑and‑go traffic or aggressive throttle use. The pack’s transmission oil also contains compounds aimed at cushioning gear engagement and improving shift feel.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShear‑stable viscosity maintains protection at high RPM and temperature\u003c\/li\u003e\n  \u003cli\u003eAdditives help reduce wear and preserve metal surfaces under load\u003c\/li\u003e\n  \u003cli\u003eTransmission ShockProof formula improves shift smoothness and gear protection\u003c\/li\u003e\n  \u003cli\u003eFuel injection cleaner helps maintain injector and throttle body performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this kit for? Red Line 90226 Powerpack is intended for riders and home mechanics who want a single, quality kit to perform a full service on many V‑Twin motorcycles. It’s ideal if you value professional‑grade lubricants, prefer buying everything at once, and own a compatible Harley‑style bike. If your model requires an extra primary bottle to reach full capacity, plan to add one additional quart of primary chain case oil before starting the service.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need extra oil for certain models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Some larger Twin Cam engines require an extra quart of primary chain case oil to reach full capacity; check your owner’s manual before starting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil kit compatible with wet clutch systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the included transmission oil is formulated for many wet‑clutch gearbox setups used in V‑Twin motorcycles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082764365982,"sku":"B0038385H6","price":333.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-90226-front-pack.jpg?v=1785813568"},{"product_id":"red-line-mt-85-75w-85-gl-4-manual-transmission-gear-oil-1-gallon-syncro-safe-protection-and-improved-shift-quality","title":"Red Line MT-85 75W-85 GL-4 Manual Transmission Gear Oil — 1 Gallon, Syncro-Safe Protection and Improved Shift Quality","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50505 MT-85 is a 75W-85 GL-4 manual transmission gear oil formulated to protect gears and synchros while improving shift quality in a wide range of manual drivetrains.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis full-gallon formulation from Red Line is designed for modern and classic manuals that require a GL-4 type lubricant. It balances protective film strength with controlled friction to protect gear teeth, reduce wear on brass synchros, and give smoother, more consistent shifts even when temperatures drop. The MT-85 blend is recommended wherever GL-1, GL-3, or GL-4 fluids are specified and is commonly used in performance and OEM applications from many manufacturers.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect gears and synchronizers?\u003c\/h3\u003e\n\u003cp\u003eThe MT-85 base and additive package create a durable lubricating film that resists shear and metal-to-metal contact under load. It preserves synchro life by providing balanced friction characteristics without the reactive sulfur additives found in GL-5 fluids that can harm brass components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-4 formulation safe for brass synchros and bronze components\u003c\/li\u003e\n  \u003cli\u003eHigh film strength reduces gear tooth wear and scuffing\u003c\/li\u003e\n  \u003cli\u003eStable additives minimize oxidation and viscosity loss over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it improve shifting performance in cold weather?\u003c\/h3\u003e\n\u003cp\u003eYes — MT-85’s 75W-85 viscosity and friction control are tuned to help synchronize gear engagement at lower temperatures. Drivers will notice easier, crisper shifts during cold starts and throughout drive cycles where quick, consistent engagement is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e75W-85 grade offers reliable low-temperature flow\u003c\/li\u003e\n  \u003cli\u003eBalanced slipperiness reduces gear clash and short-shifts\u003c\/li\u003e\n  \u003cli\u003eWorks well with factory synchromesh systems for smoother gear selection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and manual transmissions is this suitable for?\u003c\/h3\u003e\n\u003cp\u003eMT-85 is popular with a wide range of vehicles that specify GL-4 gear oils, including many Japanese and European manual transmissions. It’s often selected for sport and enthusiast cars where component life and shifting feel are priorities.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommonly used in Nissan 350Z, 370Z, and many Maxima, Altima, Sentra models\u003c\/li\u003e\n  \u003cli\u003eCompatible with Mitsubishi Evolution manual gearboxes and other performance transmissions\u003c\/li\u003e\n  \u003cli\u003eAlso chosen for Hyundai, Kia, and Quaife synchromesh systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does Red Line's quality and performance differ from other gear oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line focuses on formulations that combine long-term protection with performance-oriented friction control. The company’s products are engineered to reduce wear and preserve component life without sacrificing shift quality, backed by decades of development and motorsport experience.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEstablished engineering pedigree since 1979 with performance-focused designs\u003c\/li\u003e\n  \u003cli\u003eNo compromises on additive selection for synchro-friendly protection\u003c\/li\u003e\n  \u003cli\u003eFormulated to meet the expectations of enthusiasts and OEM specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Red Line 50505 MT-85 75W-85 GL-4 is aimed at drivers and technicians who need a reliable, synchro-safe manual transmission fluid for performance cars, daily drivers, and classic manuals. It suits owners seeking improved shift feel, extended synchro and gear life, and compatibility with GL-1\/GL-3\/GL-4 specifications across many Japanese, European, and aftermarket transmissions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is MT-85 safe for brass synchros?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. MT-85 is a GL-4 formula without reactive sulfurs, making it safe for brass and bronze synchros.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in cold climates?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Its 75W-85 viscosity and friction tuning help maintain easier shifting and reliable flow in colder temperatures.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082794545310,"sku":"B019XB6FQO","price":192.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50505-front-packaging.jpg?v=1785814542"},{"product_id":"red-line-75w85-gl-5-full-synthetic-gear-oil-1-gallon-limited-slip-compatible-high-film-strength","title":"Red Line 75W85 GL-5 Full Synthetic Gear Oil — 1 Gallon, Limited-Slip Compatible, High Film Strength","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50105 is a full-synthetic 75W85 GL-5 gear oil engineered for hypoid limited-slip differentials and final drives, sold in a 1-gallon container.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis formulation delivers stable viscosity, high film strength and built-in friction modifiers to support clutch-type limited-slip differentials while meeting a broad range of SAE equivalencies. It’s a purpose-built lubricant for differential housings, transfer cases and certain final drives where GL-5 performance and limited-slip compatibility are required. Because of its extreme slipperiness, it is not recommended for most synchronized manual transmissions where shifting feel could be affected.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gear oil protect hypoid gears under load?\u003c\/h3\u003e\n\u003cp\u003eThe full-synthetic base and GL-5 additive package create a durable lubricating film that reduces metal-to-metal contact during heavy loading and high-pressure operation. This lowers wear, resists breakdown at elevated temperatures, and helps maintain consistent gear engagement over long service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-5 extreme-pressure additives for hypoid tooth protection\u003c\/li\u003e\n  \u003cli\u003eStable viscosity across temperature ranges to preserve film thickness\u003c\/li\u003e\n  \u003cli\u003eSynthetic base oils that resist thermal and oxidative degradation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil work in vehicles with limited-slip differentials?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line 50105 contains friction modifiers specifically added to make it compatible with clutch-type limited-slip differentials. In most LSD applications no extra additives are required, but verifying manufacturer specifications is recommended to ensure full compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-added friction modifiers for clutch engagement\u003c\/li\u003e\n  \u003cli\u003eSuitable for many OEM and aftermarket limited-slip units\u003c\/li\u003e\n  \u003cli\u003ePreviously marketed under the LightWeight Gear Oil name\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and systems commonly use this 75W85 fluid?\u003c\/h3\u003e\n\u003cp\u003eThis product is popular in many late-model passenger cars, SUVs and light trucks from brands like BMW, Ford, GM, Jeep, Mercedes-Benz, Toyota, Lexus and Ram. It’s also chosen for high-performance and race transaxles that specify GL-5 and lighter viscosity grades, such as certain Formula race sequential gearboxes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRear differentials and final drives in performance cars\u003c\/li\u003e\n  \u003cli\u003eTransfer cases calling for GL-5-type oils\u003c\/li\u003e\n  \u003cli\u003eSelected racing transaxles and limited-slip setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there circumstances to avoid using this oil?\u003c\/h3\u003e\n\u003cp\u003eDo not use this fluid in most synchronized manual transmissions or transaxles where manufacturers require conventional motor oils or synchronizer-friendly gear oils, because its slipperiness can cause shifting issues. Always consult the vehicle service manual and follow OEM viscosity and spec recommendations before changing lubricants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot intended for most synchronized manual transmissions\u003c\/li\u003e\n  \u003cli\u003eCheck manufacturer specs for required gear oil performance\u003c\/li\u003e\n  \u003cli\u003eUse only where GL-5 and 75W85 equivalence are acceptable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 50105 75W85 GL-5 full synthetic gear oil is aimed at enthusiasts, mechanics and fleet owners who need a lightweight, high-performance oil for hypoid limited-slip differentials, final drives and transfer cases. It’s a solid choice for drivers of late-model performance vehicles, off-roaders, and race teams that need consistent gear protection and LSD compatibility, provided the application calls for GL-5 and lighter viscosity grades.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 50105 in a manual transmission?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Generally no; its slipperiness can harm synchronizer operation. Use only if the manufacturer permits GL-5 75W85-type oils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil compatible with limited-slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it contains friction modifiers for clutch-type LSDs and usually requires no extra additive.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082831409310,"sku":"B01N6GS5HV","price":209.86,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50105-front-gallon-label.jpg?v=1785815820"},{"product_id":"red-line-big-twin-20w50-power-pack-complete-kit-with-chrome-k-n-filter-for-evolution-twin-cam-v-twins","title":"Red Line Big Twin 20W50 Power Pack Complete Kit with Chrome K\u0026N Filter — For Evolution \u0026 Twin-Cam V-Twins","description":"\u003cstrong\u003eRed Line 90226 Big Twin 20W50 Power Pack is a complete maintenance kit that supplies 20W50 engine oil, transmission and primary fluids, a K\u0026amp;N high-performance chrome oil filter, fuel injection cleaner, funnel, and branded accessories for Evolution and Twin-Cam motorcycles.\u003c\/strong\u003e\n\n\u003cp\u003eThis all-in-one service package is designed for riders who want a factory-level refill kit tailored to V-Twin Harley-style powertrains. The kit bundles five quarts of 20W50 motorcycle motor oil with dedicated V-Twin transmission and primary chain case lubricants, plus a chrome K\u0026amp;N high-performance oil filter and a small assortment of practical extras that make a single-shop oil change faster and cleaner.\u003c\/p\u003e\n\n\u003ch3\u003eWhat components are included and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit delivers the specific fluids and parts needed to perform a thorough oil, transmission, and primary fluid service on Evolution and Twin-Cam engines. Each fluid is formulated for the demands of air-cooled V-Twins, and the chrome K\u0026amp;N filter offers improved flow and filtration performance compared with many stock filters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive quarts of 20W50 motorcycle engine oil optimized for air-cooled big twins.\u003c\/li\u003e\n  \u003cli\u003eOne quart of V-Twin transmission oil with ShockProof for gear protection.\u003c\/li\u003e\n  \u003cli\u003eOne quart of primary chain case oil to lubricate primary drive components.\u003c\/li\u003e\n  \u003cli\u003eK\u0026amp;N chrome high-performance oil filter for enhanced filtration and fit.\u003c\/li\u003e\n  \u003cli\u003eFuel injection cleaner to help keep injectors and idle circuits clean.\u003c\/li\u003e\n  \u003cli\u003ePractical extras: versatile funnel, Red Line embroidered hat, and sticker kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit simplify a home service or shop visit?\u003c\/h3\u003e\n\u003cp\u003eEverything required for engine, transmission, and primary oil service is organized in a single package so you don’t need to source matched fluids or hunt for the correct filter. The funnel and the included fluids let a one-person change go smoothly while the branded extras help with cleanup and identification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEliminates multiple orders—fluids and filter are matched to V-Twin specifications.\u003c\/li\u003e\n  \u003cli\u003eFunnel reduces spills and speeds fluid transfers during drain and fill.\u003c\/li\u003e\n  \u003cli\u003eFuel injection cleaner included to address minor injector and intake deposits.\u003c\/li\u003e\n  \u003cli\u003eHat and stickers provide simple branding and shop identification perks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these products fit my motorcycle’s service requirements?\u003c\/h3\u003e\n\u003cp\u003eThe fluids in this package target Evolution and Twin-Cam Harley-style V-Twin engines and their associated transmission and primary compartments. Always check your owner’s manual for recommended viscosities and capacities; this kit supplies common service quantities but confirm fill volumes for your model year and custom modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20W50 motor oil matches common recommendations for air-cooled big-twin engines.\u003c\/li\u003e\n  \u003cli\u003eSeparate transmission and primary oils prevent cross-contamination of gear and chain lubrication.\u003c\/li\u003e\n  \u003cli\u003eFilter is K\u0026amp;N chrome designed to replace many OE cartridges—but verify thread and gasket fitment.\u003c\/li\u003e\n  \u003cli\u003eQuantities provided are typical for a full service, but inspect and top off to exact specs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use the fuel injection cleaner and other extras?\u003c\/h3\u003e\n\u003cp\u003eThe bottle of fuel injection cleaner is intended for periodic use to help reduce deposits in injectors and intake passages; follow label directions and your motorcycle’s service intervals. The funnel is a reusable tool for spill-free filling, and the stickers\/hat are cosmetic accessories included with the kit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdd fuel injection cleaner according to the product label and tank capacity recommendations.\u003c\/li\u003e\n  \u003cli\u003eUse the funnel for accurate pour into engine, primary, or transmission openings.\u003c\/li\u003e\n  \u003cli\u003eKeep the hat and stickers for workshop use or as owner identity items.\u003c\/li\u003e\n  \u003cli\u003eStore unused fluids in original containers and follow safe disposal for drained oil.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Red Line 90226 Big Twin 20W50 Power Pack is best suited to owners of Evolution and Twin-Cam V-Twin motorcycles who prefer to perform their own scheduled maintenance or want a ready-made service kit for their shop. It's aimed at riders who value matched, high-quality lubricants and a high-performance K\u0026amp;N chrome filter, plus a few helpful accessories to make fluid service quicker and cleaner. Always verify fitment and fluid capacities against your motorcycle’s service manual before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this kit compatible with my Twin-Cam motorcycle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes for most Evolution and Twin-Cam models, but always confirm oil capacities and filter thread fitment in your owner’s manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include everything for a full oil change?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It includes engine, transmission, and primary oils plus a K\u0026amp;N filter and funnel; you may need drain plugs, gaskets, or extra oil depending on bike specifics.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082852085918,"sku":"B07PBCQ1K2","price":352.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-90226-front-packaging.jpg?v=1785816437"},{"product_id":"red-line-mt-90-75w-90-manual-transmission-transaxle-lubricant-1-gallon-gl-4-safe-for-brass-synchros","title":"Red Line MT-90 75W-90 Manual Transmission \u0026 Transaxle Lubricant - 1 Gallon, GL-4 Safe for Brass Synchros","description":"\u003cp\u003e\u003cstrong\u003eRed Line MT-90 75W-90 GL-4 is a manual transmission and transaxle lubricant engineered for smooth shifting, long synchro life, and protection of gear surfaces in GL-1\/GL-3\/GL-4 applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis one-gallon manual transmission lubricant from Red Line replaces reactive sulfurs found in many hypoid oils to protect brass and bronze synchros while delivering consistent viscosity across temperature ranges. Designed for road and track use, MT-90 balances wear protection with the precise friction characteristics needed for fast, notchy-free engagement. The formula works well where special synchromesh fluids are called for and supports several motor oil equivalencies for service convenience.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve shifting performance?\u003c\/h3\u003e\n\u003cp\u003eMT-90 provides a controlled coefficient of friction so synchronizers engage predictably and quietly, minimizing notchy or abrupt shifts. It is formulated to maintain that behavior from cold starts through operating temperature, which helps clutch and shift feel remain consistent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized friction for rapid synchronizer match-up\u003c\/li\u003e\n  \u003cli\u003eStable viscosity for reliable shifts in varied temperatures\u003c\/li\u003e\n  \u003cli\u003eReduces gear and synchro wear for longer component life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill MT-90 harm brass or bronze synchros?\u003c\/h3\u003e\n\u003cp\u003eNo — MT-90 is safe for copper-containing synchronizer materials because it avoids the reactive sulfur chemistries common to GL-5 hypoid oils that can corrode brass and bronze. That makes it appropriate for many older and specialty transmissions specifying GL-1, GL-3, or GL-4 service levels.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo reactive sulfurs that attack non-ferrous metals\u003c\/li\u003e\n  \u003cli\u003eRecommended where special synchromesh fluids are requested\u003c\/li\u003e\n  \u003cli\u003eCompatible with transmissions requiring GL-4 performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat viscosities and applications does MT-90 cover?\u003c\/h3\u003e\n\u003cp\u003eMT-90 is a 75W-90 gear oil suitable for a broad range of manual transmissions and transaxles. It also serves as an acceptable choice in systems that call for certain SAE motor oil viscosities when used per manufacturer guidance, offering flexibility during maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrimary viscosity: 75W-90 for gear protection\u003c\/li\u003e\n  \u003cli\u003eWorks in some systems where 80W, SAE 40, 10W-40, or 15W-40 guidance is present\u003c\/li\u003e\n  \u003cli\u003eUse where GL-1, GL-3, or GL-4 specifications are required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Red Line's MT-90 over other gear oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line has produced performance lubricants since 1979 with a focus on engineered protection and drivetrain feel. MT-90 is formulated to deliver longer synchronizer life and dependable gear protection without sacrificing precise shift quality, making it a strong choice for both performance and daily-driven vehicles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeritage brand with performance-oriented formulations\u003c\/li\u003e\n  \u003cli\u003eTargets both wear protection and shift feel simultaneously\u003c\/li\u003e\n  \u003cli\u003eCommonly chosen for classic cars, performance builds, and specialty transmissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: MT-90 75W-90 GL-4 from Red Line suits technicians, enthusiasts, and fleet owners who need a transmission fluid that protects gears and synchronizers while ensuring smooth, predictable shifts. It’s particularly useful for vehicles and gearboxes that specify GL-1\/GL-3\/GL-4 service or require synchromesh-friendly fluids, including many older European and performance-oriented manual transmissions. Choose the one-gallon container for workshop convenience, frequent service intervals, or multiple-vehicle maintenance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is MT-90 safe for brass synchronizers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. MT-90 lacks reactive sulfurs found in GL-5 oils and is safe for brass and bronze synchronizers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this instead of my regular GL-5 gear oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if your transmission specifies GL-4\/GL-3\/GL-1 or special synchromesh fluids; GL-5 may be needed for hypoid differentials.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082861064350,"sku":"B002INX20C","price":192.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-mt-90-front-label.jpg?v=1785816871"},{"product_id":"red-line-assembly-lube-16-oz-jar-heavy-duty-non-shedding-film-for-engine-build-break-in","title":"Red Line Assembly Lube 16 oz Jar — Heavy-Duty, Non-Shedding Film for Engine Build \u0026 Break-In","description":"\u003cstrong\u003eRed Line 80313 Assembly Lube is a heavy-duty protective grease in a 16-ounce jar designed to prevent metal-to-metal contact during engine assembly and initial start-up.\u003c\/strong\u003e\n\n\u003cp\u003eThis high-strength assembly lubricant is formulated for builders and technicians who need reliable protection for precision surfaces during machining, assembly, shipping or long-term storage. It forms a durable film that holds parts safe from wear and corrosion until the engine’s normal lubrication takes over. Unlike some traditional moly pastes, this Red Line formula resists shedding that could clog oil filters after first start-up, making it appropriate for modern builds and break-in sequences.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this assembly lube protect components at first start-up?\u003c\/h3\u003e\n\u003cp\u003eOn initial cranking and the first few moments of operation, bearings, cam lobes, lifters and other contact surfaces are vulnerable before pressure oil flow is fully established. Red Line 80313 lays down a thick, tenacious film that keeps surfaces separated and reduces friction and wear during that critical window.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides a strong lubricating film until engine oil reaches all galleries\u003c\/li\u003e\n  \u003cli\u003eDesigned to stay in place rather than flake off into oil passages\u003c\/li\u003e\n  \u003cli\u003eReduces metal abrasion during cold starts and low-pressure conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply it when assembling an engine or gearbox?\u003c\/h3\u003e\n\u003cp\u003eApply a light, even coat to bearing surfaces, cam lobes, wrist pins, gear teeth and any area that will be starved of oil during the first seconds of operation. Use a brush, gloved finger or small scraper to spread the product where needed; avoid excess that can be squeezed away from the intended contact points.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCoat rod and main bearings, cam lobes and lifter faces\u003c\/li\u003e\n  \u003cli\u003ePlace small amounts on fastener threads to prevent galling and aid torque accuracy\u003c\/li\u003e\n  \u003cli\u003eCover exposed gears and splines for transmission or differential assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this lube interfere with oil filters or engine break-in?\u003c\/h3\u003e\n\u003cp\u003eRed Line engineered this assembly lube to resist breaking into particles that could plug screens or filters when the engine is first started. It’s formulated to remain as a protective film and then mix harmlessly with circulating oil, so standard break-in and oil change procedures can proceed without special filtration steps.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated not to shed solids that block filters after start-up\u003c\/li\u003e\n  \u003cli\u003eCompatible with normal engine oils during break-in and initial operation\u003c\/li\u003e\n  \u003cli\u003eReplace oil and filter per builder recommendations after break-in interval\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can parts be stored with this lube, and is it corrosion-resistant?\u003c\/h3\u003e\n\u003cp\u003eBesides immediate protection, the formula offers excellent rust and corrosion inhibition, making it suitable for long-term storage of assembled or semi-assembled components. It clings to metal surfaces to keep moisture and oxidation at bay until final pre-installation cleaning or reassembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eActs as a corrosion inhibitor for parts kept in storage or transit\u003c\/li\u003e\n  \u003cli\u003eStable film that won’t run off or evaporate easily under typical storage conditions\u003c\/li\u003e\n  \u003cli\u003eEasy to wipe or clean off before final installation or painting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? Red Line 80313 Assembly Lube (16 oz) is intended for engine builders, performance shops, restoration specialists and do-it-yourself mechanics who want a reliable, long-lasting protective film for bearings, cams, lifters, gears and threaded fasteners. It’s especially useful when assembling high-performance or freshly machined engines, preparing components for storage or ensuring safe first-start protection without risking clogged filters.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 80313 on cam lobes and lifters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Apply a light coat to cam lobes and lifter faces to protect them during initial start-up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this assembly lube plug my oil filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The formula is designed not to shed solids that clog filters after first engine start.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48082899861662,"sku":"B002INQ46Q","price":79.26,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-80313-front-jar.jpg?v=1785818848"},{"product_id":"red-line-powersports-coolant-1-2-gal-pre-mixed-with-waterwetter-for-improved-heat-transfer-and-corrosion-protection","title":"Red Line powersports coolant 1\/2 gal — pre-mixed with WaterWetter for improved heat transfer and corrosion protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 80205 Supercool Extreme is a ready-to-use, water-mixed powersports coolant fortified with WaterWetter to improve heat transfer and protect cooling systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pre-mixed, half-gallon coolant is formulated specifically for motorcycles, ATVs, karts and other small-engine applications where compact radiators and close-tolerance components demand reliable temperature control and corrosion protection. Red Line blended this coolant with purified, deionized water and the correct WaterWetter concentration so you can pour and go — no measuring or mixing required. Its chemistry reduces rust, corrosion and electrolysis while helping preserve seals and water pump life, and it’s compatible with common cooling system metals and other antifreeze formulations.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this coolant improve heat transfer in small radiators?\u003c\/h3\u003e\n\u003cp\u003eThe WaterWetter concentrate in Red Line 80205 lowers surface-tension at the coolant-metal interface so more coolant contacts hot surfaces, improving convective heat flow. That helps small, densely packed radiators move heat away from the engine more efficiently under load without altering engine operating systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContains WaterWetter to boost coolant contact on heat-exchange surfaces\u003c\/li\u003e\n  \u003cli\u003ePre-mixed with deionized water for consistent thermal performance\u003c\/li\u003e\n  \u003cli\u003eOptimized for compact powersports cooling circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this coolant protect against corrosion and electrolysis?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line’s formulation includes corrosion inhibitors tailored for aluminum, cast iron, copper, brass and bronze, and it reduces electrolysis effects that cause pitting. Regular use helps keep passages clean and slows degradation of metal components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMulti-metal corrosion inhibitors safeguard mixed-metal systems\u003c\/li\u003e\n  \u003cli\u003eReduces electrolysis to protect delicate radiator fins and tubes\u003c\/li\u003e\n  \u003cli\u003eHelps maintain clean internal surfaces and extends component life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this coolant ready to use, and how does it interact with seals and pump components?\u003c\/h3\u003e\n\u003cp\u003eRed Line 80205 comes pre-diluted in the correct ratio with purified water and WaterWetter, so no mixing is necessary. The formula includes lubricants that help condition and preserve rubber seals and water pump components, reducing leaks and wear in older or high-mileage systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-mixed for immediate use — pour and go\u003c\/li\u003e\n  \u003cli\u003eLubricating additives help protect water pump seals and O-rings\u003c\/li\u003e\n  \u003cli\u003eCompatible with existing antifreeze and coolant types for easier top-offs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich machines and metals is this coolant intended for?\u003c\/h3\u003e\n\u003cp\u003eDesigned for powersports equipment, Red Line 80205 works with motorcycles, ATVs, UTVs, karts and other small-engine liquid-cooled machines. It’s safe for systems made from modern aluminum as well as traditional cast iron, copper, brass and bronze components, making it a versatile service product for mixed-material cooling systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated for motorcycles, ATVs, karts and light powersports vehicles\u003c\/li\u003e\n  \u003cli\u003eCompatible with aluminum, cast iron, copper, brass and bronze\u003c\/li\u003e\n  \u003cli\u003eWorks alongside existing antifreeze\/coolant during top-offs or service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 80205 Supercool Extreme 1\/2 gallon is aimed at riders, racers, and mechanics who need a high-performance, ready-to-use coolant that improves heat transfer, protects mixed-metal cooling systems, and simplifies maintenance. If you maintain bikes, ATVs, UTVs or karts and want a reliable pour-and-go solution that conditions seals and reduces corrosion without complicated mixing, this product meets those needs.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to dilute Red Line 80205 before use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Red Line 80205 is pre-mixed with purified water and WaterWetter; it’s ready to pour into your cooling system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this coolant safe for aluminum radiators?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The formula is compatible with aluminum and other metals like cast iron, copper, brass and bronze.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48083134873758,"sku":"B007KPSLU4","price":85.68,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-80205-front-bottle.jpg?v=1785825977"},{"product_id":"red-line-si-1-complete-fuel-system-cleaner-15-oz-2-pack-cleans-injectors-prevents-corrosion","title":"Red Line SI-1 Complete Fuel System Cleaner 15 oz (2 Pack) — Cleans Injectors \u0026 Prevents Corrosion","description":"\u003cstrong\u003eRed Line SI-1 Complete Fuel System Cleaner is a concentrated fuel additive that removes deposits and helps prevent corrosion across the entire fuel system when added to gasoline.\u003c\/strong\u003e\n\nRed Line’s SI-1 is formulated as a full-system treatment to dissolve deposits on injectors, carburetors, intake valves and combustion chambers while improving gasoline stability. Each 15-ounce bottle is intended for one tankful in most passenger vehicles; this listing includes two bottles for two treatments or two vehicles. The formula combines high- and low-temperature detergents to attack gum, varnish and carbon buildup without special equipment, making it a straightforward maintenance step between service intervals.\n\n\u003ch3\u003eHow does SI-1 clean different parts of the fuel system?\u003c\/h3\u003e\n\u003cp\u003eThe cleaner contains surfactants and detergents tuned for both hot and cold operating conditions, so it acts on deposits formed at varying temperatures. As fuel flows, the additives solubilize varnish and carbon films, allowing them to be burned away or expelled, restoring spray patterns and airflow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTargets injector spray tips to reduce clogging and restore atomization\u003c\/li\u003e\n  \u003cli\u003eSoftens carburetor varnish for easier operation and idle stability\u003c\/li\u003e\n  \u003cli\u003eRemoves intake-valve build-up that can affect airflow and combustion\u003c\/li\u003e\n  \u003cli\u003eHelps break up combustion-chamber carbon for cleaner burn\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill one bottle treat my tank and how is it used?\u003c\/h3\u003e\n\u003cp\u003eOne 15-ounce bottle is formulated to treat a typical passenger-vehicle gas tank in a single use for most applications. Pour the entire bottle into a near-empty tank, then refill with gasoline to mix the additive through the system; for larger tanks or higher contamination, a second treatment may be helpful.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one bottle per normal-sized tank for standard treatment\u003c\/li\u003e\n  \u003cli\u003ePour into fuel before filling to ensure even mixing\u003c\/li\u003e\n  \u003cli\u003eFor heavy deposit buildup, consider a follow-up treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and protection benefits can I expect?\u003c\/h3\u003e\n\u003cp\u003eSI-1 focuses on deposit removal and corrosion prevention rather than instant horsepower gains. Removing buildup can restore throttle response and stabilize idle, and the detergent action helps reduce future gum and varnish formation for longer-term fuel system reliability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproves injector and carburetor function by restoring spray and flow\u003c\/li\u003e\n  \u003cli\u003eReduces gum and varnish formation for cleaner storage and operation\u003c\/li\u003e\n  \u003cli\u003eIncludes corrosion inhibitors to protect metal components in the fuel system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs SI-1 compatible with my engine and fuel types?\u003c\/h3\u003e\n\u003cp\u003eSI-1 is designed for gasoline engines and works with modern fuel systems, including port- and direct-injection setups. It is not intended for diesel engines; always follow manufacturer recommendations and avoid mixing with other strong fuel-treating chemicals unless specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntended for gasoline engines, including direct-injection systems\u003c\/li\u003e\n  \u003cli\u003eNot recommended for diesel engines or specialty fuels\u003c\/li\u003e\n  \u003cli\u003eSafe as a periodic maintenance additive when used as directed\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for?\n\nThis 2-pack of Red Line SI-1 Complete Fuel System Cleaner is aimed at drivers who want a simple, effective way to maintain fuel-system cleanliness between professional services: everyday commuters, performance-car owners, and riders storing vehicles for seasons. It’s useful for anyone noticing rough idle, hesitation, or reduced responsiveness caused by deposit buildup, and for those preparing vehicles for long storage to reduce gum and varnish formation.\n\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003e60103 SI-1\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use Red Line SI-1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one bottle per tank as a maintenance treatment when you notice reduced performance or every few fuel fill-ups for preventive care.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can SI-1 be used with direct-injection engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SI-1 is formulated for gasoline engines including direct-injection systems; it is not for diesel engines.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48083141689502,"sku":"B00NQB7OM2","price":78.44,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si1-front-packaging_4215cd70-1a3f-4385-9b84-d75a6acc0f51.jpg?v=1785826360"},{"product_id":"red-line-mt-90-75w-90-gl-4-manual-transmission-lubricant-1-quart-x2-synchronizer-safe-smooth-shifting","title":"Red Line MT-90 75W-90 GL-4 Manual Transmission Lubricant — 1 Quart x2, synchronizer-safe smooth shifting","description":"\u003cp\u003e\u003cstrong\u003eRed Line MT-90 75W-90 GL-4 is a high-performance manual transmission and transaxle lubricant formulated to protect gears and synchronizers while delivering smooth, predictable shifts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis MT-90 manual transmission lubricant from Red Line is engineered for gearboxes and transaxles that require GL-4 (and compatible GL-1\/GL-3) fluids. It uses a 75W-90 viscosity to provide reliable protection across a broad temperature range, avoid corrosive reactive sulfurs common in GL-5 formulations, and maintain excellent synchronizer friction characteristics so shifting stays crisp and low-notice. The product comes in convenient 1-quart bottles sold as a two-pack for easy service intervals or multi-vehicle maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes MT-90 suitable for manual transmissions and transaxles?\u003c\/h3\u003e\n\u003cp\u003eMT-90 is formulated specifically for the challenges of manual gear sets and synchronizers. It balances wear protection with a synchronizer-friendly friction profile, which prevents sticky or notchy shifts and helps extend synchro life. It is recommended where GL-1, GL-3, or GL-4 specifications are called for.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-4 chemistry safe for brass and bronze synchros\u003c\/li\u003e\n  \u003cli\u003e75W-90 viscosity for stable film strength across temperatures\u003c\/li\u003e\n  \u003cli\u003eDesigned to reduce gear wear and extend component life\u003c\/li\u003e\n  \u003cli\u003eEliminates notchy shifting, improving drivability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does MT-90 help with shifting performance in cold or hot conditions?\u003c\/h3\u003e\n\u003cp\u003eThis formula maintains an appropriate coefficient of friction at low and high temperatures, providing predictable synchronizer engagement and quicker gear changes. Drivers notice smoother shifts immediately after fill, and the viscosity choice helps preserve protection during both cold starts and sustained highway runs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e75W rating improves cold-flow for easier cold-weather shifts\u003c\/li\u003e\n  \u003cli\u003e90 high-temperature behavior keeps oil film on gear faces\u003c\/li\u003e\n  \u003cli\u003eConsistent synchronizer performance reduces shift effort\u003c\/li\u003e\n  \u003cli\u003eStable formulation minimizes viscosity breakdown over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and applications are appropriate for this oil?\u003c\/h3\u003e\n\u003cp\u003eUse MT-90 in manual transmissions, transaxles, and differentials requiring GL-4 (or compatible GL-1\/GL-3) lubricant. It’s especially recommended where manufacturers advise against GL-5 due to reactive sulfur content that can harm brass synchros. Check your owner's manual for recommended gear oil viscosity ranges including 75W-90, 80W, or SAE 40 equivalents.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManual gearboxes specifying GL-4 or special synchromesh fluids\u003c\/li\u003e\n  \u003cli\u003eVehicles with brass or bronze synchronizers sensitive to GL-5\u003c\/li\u003e\n  \u003cli\u003eApplications calling for 75W-90, 80W, or SAE 40 viscosity ranges\u003c\/li\u003e\n  \u003cli\u003eEnthusiast and performance cars where shift quality matters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Red Line MT-90 over generic gear oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line has a long reputation for performance lubricants tailored to specific driveline needs. MT-90 is blended to protect gears and synchronizers without the sulfur additives that can attack yellow metals. The formula targets improved component life and a more refined shift feel compared with generic GL-5-heavy gear oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo reactive sulfurs that damage brass synchros\u003c\/li\u003e\n  \u003cli\u003eEngineered synchronizer friction for smoother shifts\u003c\/li\u003e\n  \u003cli\u003eTrusted brand with a history of specialty lubricants since 1979\u003c\/li\u003e\n  \u003cli\u003eSold in convenient 1-quart bottles, two-pack for service convenience\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line MT-90 75W-90 GL-4 MTL is ideal for DIY mechanics, performance-minded drivers, and workshop technicians who service manual transmissions, transaxles, and differentials that specify GL-4 or synchromesh fluids. It's particularly well suited for vehicles with brass or bronze synchronizers where GL-5 oils are not recommended and for anyone who wants improved shift quality and long-term gear protection.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is MT-90 safe for synchronizers made of brass?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. MT-90 is a GL-4 formulation that avoids reactive sulfurs found in GL-5, making it safe for brass and bronze synchronizers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line MT-90 in place of SAE 40 motor oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: MT-90 matches gear oil viscosity needs (75W-90) and can be used where SAE 40 equivalents are specified for gearboxes, but check your manual before substituting oils.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48083141787806,"sku":"B00NT5V8RW","price":100.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-mt-90-front-label_a8faedce-5f1e-4115-935f-532ea8dea530.jpg?v=1785826360"},{"product_id":"red-line-75w85-gl-5-full-synthetic-gear-oil-2-quart-for-hypoid-limited-slip-differentials-high-load-protection","title":"Red Line 75W85 GL-5 Full Synthetic Gear Oil — 2 Quart for Hypoid \u0026 Limited Slip Differentials, High-Load Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50104 is a full-synthetic 75W85 GL-5 gear oil formulated for hypoid and clutch-type limited slip differentials, sold in a 2-quart container.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis high-performance gear lubricant combines a broad viscosity window with friction modifiers to work in many modern and racing differentials. It meets multiple viscosity specifications (SAE 75W80, 75W, 80W, 85W, SAE 30 and 10W30 motor oil equivalence) and is designed to protect gears under heavy loads while providing limited slip compatibility without requiring extra additives for most clutch-type limited slip units.\u003c\/p\u003e\n\n\u003ch3\u003eWhat vehicles and differentials is this gear oil suitable for?\u003c\/h3\u003e\n\u003cp\u003eRed Line 50104 is widely used across passenger cars, trucks, SUVs and select racing transaxles where a GL-5 hypoid gear lubricant with limited slip friction characteristics is required. It’s especially popular in late-model European, American and Japanese vehicles, plus many competition gearboxes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon OEMs: BMW, Mercedes-Benz, Lexus, Toyota, Ford, GM, Dodge, Jeep, Ram\u003c\/li\u003e\n  \u003cli\u003eAlso used in performance\/race transaxles: Hewland LD-200, FTR sequential units\u003c\/li\u003e\n  \u003cli\u003eIntended for differentials, final drives, transfer cases (not most synchronized manual transmissions)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the 75W85 viscosity benefit day-to-day and performance use?\u003c\/h3\u003e\n\u003cp\u003eThe 75W85 grade offers a mix of cold-flow assistance at startup and stable film strength at high load and temperature. This balance helps reduce wear during heavy torque transfer and maintains gear protection across a wide operating range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGood cold-weather pumpability comparable to 75W80 products\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature film strength for hypoid gear meshes under load\u003c\/li\u003e\n  \u003cli\u003eStable viscosity minimizes shear thinning in severe service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDo I need to add extra friction modifiers for a limited slip differential?\u003c\/h3\u003e\n\u003cp\u003eRed Line 50104 already includes friction-modifying additives intended to make it compatible with most clutch-type limited slip differentials, so additional modifiers are usually unnecessary. However, always follow the differential manufacturer’s guidance if they specify a particular additive or lubricant requirement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated with friction modifiers for clutch-type LSDs\u003c\/li\u003e\n  \u003cli\u003eNo additional friction modifier required for most limited slip units\u003c\/li\u003e\n  \u003cli\u003eNot recommended for synchronized manual transmissions where slipperiness may affect shifting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil compare to conventional gear oils and where should it not be used?\u003c\/h3\u003e\n\u003cp\u003eAs a full-synthetic GL-5 product, Red Line 50104 outperforms many conventional oils in oxidation stability, thermal resistance and load-carrying capacity. Its slipperier chemistry can cause shifting issues in many manual transmissions with synchronizers, so it’s not the correct choice for those applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides superior protection versus conventional mineral gear lubricants\u003c\/li\u003e\n  \u003cli\u003eBetter thermal and shear stability for extended service intervals under severe conditions\u003c\/li\u003e\n  \u003cli\u003eAvoid in synchronized transmissions unless manufacturer approves GL-5 slippery formulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? If you own or maintain late-model European, American or Japanese vehicles with hypoid or clutch-type limited slip differentials, or you operate race transaxles that accept GL-5 fluids, Red Line 50104 is intended to deliver reliable protection and consistent friction behavior. Choose this 2-quart pack when you need a full-synthetic gear oil that balances cold-start performance, high-load protection and limited slip compatibility—while avoiding use in most synchronized manual transmissions unless explicitly allowed by the vehicle maker.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W85 suitable for limited slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It includes friction modifiers for most clutch-type LSDs and typically needs no extra additive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this be used in manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Generally no. Its slipperiness can impair synchronized manual transmissions unless the manufacturer permits GL-5 fluids.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48083180093598,"sku":"B0858G2FRP","price":102.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50104-front-label-2qt.jpg?v=1785827925"},{"product_id":"red-line-waterwetter-super-coolant-concentrate-12-oz-4-pack-improves-heat-transfer-rust-protection","title":"Red Line WaterWetter Super Coolant concentrate 12 oz (4-Pack) - improves heat transfer, rust protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 80204 WaterWetter Super Coolant is a 12-ounce concentrated cooling-system additive that improves water's heat transfer and helps protect against rust and corrosion.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for engines where faster heat rejection matters, WaterWetter lowers surface tension so water (or diluted coolant) spreads and cools engine parts more effectively. The formula is compatible with ethylene and propylene glycol antifreezes, meets ASTM corrosion test standards for glycol-based systems, and is a practical choice for racers, hot-rodders, and drivers in warm climates who want better cooling without changing core components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does WaterWetter improve cooling performance?\u003c\/h3\u003e\n\u003cp\u003eWaterWetter reduces the surface tension of the coolant mixture so liquid adheres and spreads across hot surfaces more quickly, improving heat transfer. That faster heat movement helps the radiator and thermostat maintain lower operating temperatures during heavy loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDoubles the wetting ability of water for improved heat contact.\u003c\/li\u003e\n  \u003cli\u003eWorks in straight water or with existing antifreeze blends.\u003c\/li\u003e\n  \u003cli\u003eHelps radiator and block shed heat more uniformly under stress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it protect my engine from rust and corrosion?\u003c\/h3\u003e\n\u003cp\u003eYes — WaterWetter includes corrosion-inhibiting components so it can be used with straight water in racing or where antifreeze concentration is reduced. For glycol-based antifreezes, the product satisfies relevant ASTM corrosion tests when used as directed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides rust and corrosion protection for cooling systems.\u003c\/li\u003e\n  \u003cli\u003eCompatible with DEX-COOL and long-life antifreezes.\u003c\/li\u003e\n  \u003cli\u003eMeets ASTM D2570 and ASTM D1384 corrosion test requirements for glycol systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much do I need to use and how do I add it?\u003c\/h3\u003e\n\u003cp\u003eDosage is simple: one 12-ounce bottle treats most passenger cars and light trucks with 3 to 5 gallons (13.2 to 15.9 liters) of coolant. Larger systems may require two bottles; very small systems can be treated by measuring 1 ounce per quart.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne bottle treats most 3–5 gallon cooling systems.\u003c\/li\u003e\n  \u003cli\u003eUse two bottles for larger radiators or heavy-duty applications.\u003c\/li\u003e\n  \u003cli\u003eSmall systems: 1 oz per quart (about 3–4 capfuls).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use WaterWetter with my existing antifreeze?\u003c\/h3\u003e\n\u003cp\u003eWaterWetter is formulated to work alongside ethylene and propylene glycol antifreezes, improving their heat transfer performance without requiring a full coolant flush. It is commonly used to enhance both new and in-service antifreeze formulations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSafe with ethylene and propylene glycol-based coolants.\u003c\/li\u003e\n  \u003cli\u003eEnhances heat transfer of both new and used antifreeze.\u003c\/li\u003e\n  \u003cli\u003eOften chosen in motorsports or high-load driving for added efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line WaterWetter is aimed at car enthusiasts, racers, tuners, and anyone running high-performance or heavily loaded engines who wants to improve cooling efficiency and protect against rust without changing core cooling-system chemistry. It’s also useful for drivers in warm climates who prefer reduced antifreeze concentrations or those using straight water in track applications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many ounces does one bottle treat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One 12 oz bottle treats most passenger cars with 3–5 gallons (13.2–15.9 L) of coolant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is WaterWetter compatible with my antifreeze?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it works with ethylene and propylene glycol antifreezes and improves heat transfer.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48083952042142,"sku":"B00COSQMPI","price":129.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-front-packaging.jpg?v=1785841088"},{"product_id":"red-line-5w40-fully-synthetic-motor-oil-1-gallon-ester-pao-blend-high-detergency","title":"Red Line 5W40 Fully Synthetic Motor Oil 1 Gallon — Ester\/PAO Blend, High Detergency","description":"\u003cp\u003e\u003cstrong\u003eRed Line 15405 SAE 5W40 is a fully synthetic ester\/PAO motor oil designed to deliver high detergency, improved ring seal and extended drain intervals for passenger cars, light trucks and performance vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 1-gallon formulation blends polyol esters with PAO base stocks to create a naturally multi-grade oil that minimizes reliance on friction-reducing additives while maintaining clean engine internals. It targets drivers who want a premium lubricant compatible with many European and high-performance applications, offering robust cleanliness properties and improved fuel economy when used per manufacturer recommendations.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil help keep my engine clean?\u003c\/h3\u003e\n\u003cp\u003eRed Line 5W40 emphasizes high detergency, which helps prevent deposit buildup on pistons, rings and valve trains. Cleaner internals can maintain combustion efficiency and reduce the chance of sludge or varnish formation under normal operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePolyol ester\/PAO base provides inherent cleanliness without over-relying on detergent additives.\u003c\/li\u003e\n  \u003cli\u003eHigh detergency supports longer drain intervals when following service guidelines.\u003c\/li\u003e\n  \u003cli\u003eImproved ring seal helps maintain compression and reduce blow-by.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this compatible with my European performance or turbocharged engine?\u003c\/h3\u003e\n\u003cp\u003eThis oil is formulated for a wide range of high-performance and European engines, meeting many OEM service profiles. It is commonly recommended for applications that specify VW\/Audi, BMW LL-01, water-cooled Porsche A40 and several Mercedes-Benz specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for VW\/Audi 500.00 \/ 501.01 \/ 502.00 \/ 505.00 \/ 505.01 service levels.\u003c\/li\u003e\n  \u003cli\u003eCompatible with BMW LL-01 and Porsche A40 water-cooled applications.\u003c\/li\u003e\n  \u003cli\u003eAcceptable for Mercedes-Benz 229.1 \/ 229.3 \/ 229.5 where 5W40 viscosity is allowed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance traits should I expect during everyday driving?\u003c\/h3\u003e\n\u003cp\u003eYou can expect steady multi-grade protection across a range of temperatures, with good start-up flow and high-temperature stability. The synthetic ester\/PAO blend helps preserve lubricity, which contributes to consistent power delivery and efficient operation when maintained properly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5W40 viscosity supports reliable cold starts and high-temperature film strength.\u003c\/li\u003e\n  \u003cli\u003eBlend reduces friction for potential fuel economy benefits under normal use.\u003c\/li\u003e\n  \u003cli\u003eDesigned for gasoline and diesel engines meeting API SN\/SM\/SL\/CF and ACEA A3\/B3\/B4 guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I change this oil and are there any special handling notes?\u003c\/h3\u003e\n\u003cp\u003eDrain intervals depend on vehicle type, driving conditions and manufacturer recommendations; Red Line’s high detergency can permit extended intervals when approved by the vehicle maker. Always follow your OEM service schedule and check oil condition regularly; store the gallon upright in a cool, dry place away from direct heat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFollow your vehicle manufacturer’s recommended change interval; consult your service manual.\u003c\/li\u003e\n  \u003cli\u003eExtended drains may be possible when permitted by OEM guidance and monitoring oil condition.\u003c\/li\u003e\n  \u003cli\u003eKeep container sealed and upright to prevent contamination and spillage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Enthusiasts, professional technicians and owners of European or performance vehicles who demand a premium, fully synthetic 5W40 oil will find Red Line 15405 especially appropriate. It suits drivers seeking strong detergency, reliable multi-grade behavior and compatibility with a broad set of service specifications — provided the oil matches their vehicle manufacturer’s requirements and service intervals.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 5W40 for turbocharged engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it's formulated for many turbocharged gasoline and diesel engines compatible with API and ACEA specifications. Check your OEM requirements first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does Red Line 15405 meet BMW or VW service specifications?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It supports BMW LL-01 and multiple VW\/Audi service levels like 502.00 and 505.01 where 5W40 is acceptable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48084099367070,"sku":"B004BORLDA","price":150.57,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-15405-gallon-front.jpg?v=1785846383"},{"product_id":"red-line-75w90-non-slip-synthetic-gear-oil-2-quart-pack-gl-5-clutch-type-lsd-friendly","title":"Red Line 75W90 Non‑Slip Synthetic Gear Oil 2‑Quart Pack — GL‑5, Clutch‑Type LSD Friendly","description":"\u003cp\u003e\u003cstrong\u003eRed Line 58304 75W90 Non‑Slip Synthetic Gear Oil is a GL‑5, synthetic gearbox and differential lubricant sold as two 1‑quart bottles, formulated without friction modifiers to deliver positive clutch‑style limited‑slip engagement and stable shifting across temperatures.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis two‑pack of Red Line 58304 provides a high‑performance 75W90 gear oil designed for transmissions, transaxles and clutch‑type limited‑slip differentials. It blends base stocks and extreme‑pressure additives but intentionally omits friction modifiers so clutch plates and mechanical LSDs can lock reliably. The synthetic formulation aims to protect gear teeth, reduce wear and support consistent shifting without altering factory syncro feel.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve shifting and differential performance?\u003c\/h3\u003e\n\u003cp\u003eThe non‑slip 75W90 is tailored to slow synchronizers slightly and avoid the slipperiness that some additives create. That makes shifts crisper and helps clutch‑type LSDs achieve full engagement when under load. It’s particularly useful where OEM recommendations permit GL‑5 fluids without friction modifiers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated without friction modifiers to preserve clutch lockup\u003c\/li\u003e\n  \u003cli\u003eGL‑5 extreme‑pressure chemistry to protect hypoid gear teeth\u003c\/li\u003e\n  \u003cli\u003eSynthetic base stocks for temperature stability and shear resistance\u003c\/li\u003e\n  \u003cli\u003eHelps maintain synchro feel across a broad temperature range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and drivetrains is it suited for?\u003c\/h3\u003e\n\u003cp\u003eThis fluid is a common choice for a wide range of passenger cars, light trucks and performance vehicles where GL‑5 75W90 is specified or accepted. It’s popular with owners of Porsche, Ferrari, Subaru, Dodge, Jeep and GM models, and it’s frequently used in racing applications with clutch‑type limited‑slip units. Always check the vehicle manual or manufacturer guidance before changing gear lubricant type.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with many transmissions, transaxles and differentials calling for 75W90 GL‑5\u003c\/li\u003e\n  \u003cli\u003eWidely used in Porsche and Ferrari transaxles and Subaru differentials\u003c\/li\u003e\n  \u003cli\u003eRecommended for clutch‑type LSDs needing non‑slip behavior\u003c\/li\u003e\n  \u003cli\u003eUsed in racing where firm LSD lockup is desired\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this product protect gears and extend drain intervals?\u003c\/h3\u003e\n\u003cp\u003eRed Line’s formulation combines extreme‑pressure additives with robust synthetic base oils to limit metal‑to‑metal contact and resist thermal breakdown. The result is reduced gear wear and a lubricant that maintains viscosity and film strength over longer service periods compared with many conventional oils. Proper maintenance intervals still depend on operating conditions and OEM guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtreme‑pressure additives protect gear contact surfaces\u003c\/li\u003e\n  \u003cli\u003eSynthetic oil resists oxidation and viscosity loss under heat\u003c\/li\u003e\n  \u003cli\u003eDesigned to reduce wear for longer component life\u003c\/li\u003e\n  \u003cli\u003eHelps maintain performance across repeated high‑load events\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store this two‑quart pack?\u003c\/h3\u003e\n\u003cp\u003eEach unit in the pack is a one‑quart bottle, sized for topping off or completing specific fill volumes. Use factory service information for fill amounts and change intervals. Store unopened bottles in a cool, dry place away from direct sunlight and extreme temperatures to preserve product life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSold as two 1‑quart bottles for convenience and service flexibility\u003c\/li\u003e\n  \u003cli\u003eFollow OEM fill volumes and change frequency recommendations\u003c\/li\u003e\n  \u003cli\u003eKeep bottles sealed until use and store in moderate conditions\u003c\/li\u003e\n  \u003cli\u003eDispose of used oil per local environmental regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Enthusiasts, racers and technicians seeking a non‑slip, synthetic 75W90 GL‑5 gear oil will find Red Line 58304 appropriate when clutch‑type LSD engagement and reliable syncro feel are priorities. It suits owners of performance European and Japanese cars, light trucks, and anyone who prefers a high‑quality synthetic gear lubricant from an established brand. Verify compatibility with your vehicle’s specifications before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W90 suitable for limited‑slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it’s non‑slip (no friction modifiers) and commonly used with clutch‑type LSDs to ensure positive lockup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in my Porsche or Subaru transaxle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Many owners use it in Porsche and Subaru transaxles, but always confirm your vehicle’s manual or maker recommendations first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48084149862558,"sku":"B00NTDFF2I","price":124.13,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-58304-front-packaging.jpg?v=1785847438"},{"product_id":"red-line-5w-30-fully-synthetic-motor-oil-1-quart-ester-pao-blend-for-improved-detergency-fuel-economy","title":"Red Line 5W-30 Fully Synthetic Motor Oil — 1 Quart Ester\/PAO Blend for Improved Detergency \u0026 Fuel Economy","description":"\u003cp\u003e\u003cstrong\u003eRed Line 15304 SAE 5W-30 is a fully synthetic ester\/PAO motor oil engineered to deliver high detergency, improved fuel economy, and extended drain capability for cars, light trucks and performance engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 1-quart formulation combines polyol ester and PAO base stocks to create a naturally multigrade oil that minimizes unnecessary additives while maximizing lubricity and ring seal. It meets a wide range of manufacturer and industry specifications, making it suitable for many European and domestic applications where modern synthetic performance is required. The oil’s cleaning properties and advanced base-stock chemistry are designed to keep combustion chambers, pistons and rings cleaner for longer service intervals.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve engine cleanliness and performance?\u003c\/h3\u003e\n\u003cp\u003eRed Line’s ester\/PAO blend provides superior detergency that helps prevent deposit build-up on pistons, rings and valve train components. Cleaner internals maintain compression and minimize power loss, while the formula’s lubricity supports smoother mechanical operation and reduced wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh detergency reduces varnish and sludge formation.\u003c\/li\u003e\n  \u003cli\u003eImproved ring seal helps retain compression and power.\u003c\/li\u003e\n  \u003cli\u003eEster chemistry boosts lubricity for less friction.\u003c\/li\u003e\n  \u003cli\u003eSuitable for extended drain intervals when following manufacturer guidance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and specs is Red Line 15304 compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis oil is formulated for passenger cars, light trucks, performance vehicles and marine applications, and it is accepted under many European and U.S. standards. It’s commonly recommended where VW\/Audi 502.00\/503.01\/505.01-99, BMW LL-01, Ford WSS-M2C946-A, API SN\/SM\/SL\/SJ\/SH\/SG\/CF, ACEA A3\/B3\/B4, and certain GM dexos1 designations are required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets API SN and several earlier API categories for broad compatibility.\u003c\/li\u003e\n  \u003cli\u003eACEA A3\/B3\/B4 approval for many European engines.\u003c\/li\u003e\n  \u003cli\u003eRecognized for VW\/Audi and BMW applications listed in technical notes.\u003c\/li\u003e\n  \u003cli\u003eAppropriate for Ford and compatible GM specifications cited by the manufacturer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the benefits of the ester\/PAO base-stock blend?\u003c\/h3\u003e\n\u003cp\u003eThe combined polyol ester and PAO base stocks provide inherent multi-grade performance without relying on heavy additive packages that can compromise lubricity. This chemistry maintains a stable film at high temperatures and improves cold-start flow compared with conventional oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNatural multi-grade behavior reduces dependence on viscosity index improvers.\u003c\/li\u003e\n  \u003cli\u003eStable lubricant film supports high-temperature protection and wear resistance.\u003c\/li\u003e\n  \u003cli\u003eEnhanced cold-flow characteristics for quicker oil circulation at startup.\u003c\/li\u003e\n  \u003cli\u003eReduced volatility and oxidation for longer oil life under demanding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this oil for extended drain intervals and performance tuning?\u003c\/h3\u003e\n\u003cp\u003eRed Line’s high detergency and oxidation resistance enable longer service intervals in many applications, provided you follow manufacturer guidance and monitor oil condition. Its formulation is also suited to high-performance and modified engines where stronger ring seal and lubrication are valuable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh detergency supports longer drain periods when recommended by service schedules.\u003c\/li\u003e\n  \u003cli\u003eGood choice for engines with higher power output or forced induction.\u003c\/li\u003e\n  \u003cli\u003eReduces deposit-related power loss in tuned or higher-mileage engines.\u003c\/li\u003e\n  \u003cli\u003eAlways verify extended intervals against your vehicle maker’s requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWho is this for:\u003c\/strong\u003e Red Line 15304 SAE 5W-30 is intended for vehicle owners, performance enthusiasts, and service shops seeking a premium fully synthetic oil with strong cleaning power, robust high-temperature protection, and broad manufacturer compatibility. It’s especially appropriate for European cars and domestic vehicles that call for 5W-30 performance-level oils and for people who prioritize extended drain capability and improved fuel economy while maintaining engine cleanliness.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 15304 SAE 5W-30 suitable for turbocharged engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Its ester\/PAO blend offers high-temperature protection and detergency suitable for many turbocharged engines; verify compatibility with your manufacturer first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil for extended drain intervals?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Potentially yes—its high detergency supports longer drains when allowed by your vehicle maker and with regular oil condition checks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48084405289118,"sku":"B000CP8EZG","price":54.08,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-15304-front-quart.jpg?v=1785854119"},{"product_id":"red-line-power-steering-fluid-1-quart-synthetic-formula-high-temp-protection-low-foaming","title":"Red Line Power Steering Fluid 1 Quart — Synthetic formula, High-Temp Protection \u0026 Low Foaming","description":"\u003cp\u003e\u003cstrong\u003eRed Line 30404 Power Steering Fluid is a high-performance synthetic formula in a 1-quart bottle engineered to reduce wear, resist thermal breakdown, and maintain consistent pump output for most power steering systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis power steering fluid blends enhanced high-temperature viscosity with low evaporation to protect pumps, hoses, and seals under heavy loads and wide temperature ranges. It’s formulated to lower foaming, cut down steering effort at low temperatures, and minimize leakage and squealing while meeting several OEM specifications so you can use it in a broad set of vehicles and hydraulic components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this fluid improve pump life and reduce wear?\u003c\/h3\u003e\n\u003cp\u003eRed Line’s synthetic base and additive package deliver robust film strength that resists thermal breakdown and prevents rapid viscosity loss under heat. By maintaining a stable lubricating layer, the fluid helps reduce metal-on-metal contact and keeps pump clearances protected during sustained operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eResists thermal breakdown and evaporation for sustained protection\u003c\/li\u003e\n  \u003cli\u003eReduces foaming for consistent hydraulic performance\u003c\/li\u003e\n  \u003cli\u003eMaintains high pump output at elevated temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this help steering feel in cold and hot conditions?\u003c\/h3\u003e\n\u003cp\u003eThe formulation balances low-temperature flow with increased high-temperature viscosity so steering stays manageable in cold starts and stable when components heat up. That translates to easier initial steering effort in cold weather and consistent performance during high-load or high-heat driving.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproves low-temperature steering effort for easier starts\u003c\/li\u003e\n  \u003cli\u003eProvides 50% greater high-temp viscosity to retain control under heat\u003c\/li\u003e\n  \u003cli\u003ePrevents high-temp steering fade during demanding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and pump types is this compatible with?\u003c\/h3\u003e\n\u003cp\u003eRed Line 30404 matches or satisfies multiple OEM and hydraulic specifications, making it suitable for many passenger cars and light trucks as well as industrial vane and piston pump applications. Check your owner’s manual, but it’s frequently used as a replacement for several GM, Ford, Chrysler, and military spec numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets GM PN 1050017 \/ 1052884 and Spec Number 9985010\u003c\/li\u003e\n  \u003cli\u003eCompatible with Chrysler Spec Number 5931 and Ford M2C33-F\u003c\/li\u003e\n  \u003cli\u003eSatisfies Denison HF-O, Vickers vane, Sundstrand piston pump specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical benefits will I notice after switching to this fluid?\u003c\/h3\u003e\n\u003cp\u003eOwners commonly report quieter steering operation, fewer leaks and squeals, and steadier hydraulic response under load. The lower evaporation and improved thermal stability help the system retain fluid properties longer, reducing maintenance intervals and the need for early replacements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuieter, smoother steering with reduced squeal and leak tendency\u003c\/li\u003e\n  \u003cli\u003eLonger-lasting fluid performance due to low evaporation\u003c\/li\u003e\n  \u003cli\u003eConsistent hydraulic output during extended or heavy use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 30404 Power Steering Fluid is aimed at drivers and technicians who want a durable, high-performance steering fluid for cars, trucks, and compatible hydraulic pumps. It’s appropriate for vintage and modern vehicles where OEM specs listed are required or preferred, and for anyone seeking improved thermal stability, lower foam, and reduced evaporation compared with conventional fluids.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 30404 compatible with my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your owner’s manual for listed specs; Red Line 30404 meets GM, Chrysler, Ford, and several hydraulic pump specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I change power steering fluid with this product?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Change interval depends on vehicle and use; inspect fluid condition and follow manufacturer guidance, typically longer life than conventional fluids.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48084647968926,"sku":"B000CPI5XC","price":59.3,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-30404-front-label.jpg?v=1785861686"},{"product_id":"red-line-20w-60-synthetic-motorcycle-oil-1-quart-for-air-cooled-v-twin-engines-high-temperature-film-strength","title":"Red Line 20W-60 Synthetic Motorcycle Oil — 1 Quart for Air-Cooled V‑Twin Engines, High-Temperature Film Strength","description":"\u003cp\u003e\u003cstrong\u003eRed Line 12604 20W-60 synthetic motorcycle motor oil is a high-viscosity ester-based formula engineered to protect air-cooled V‑twin engines operating in hot climates or with wide clearances.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for classic and modern American V‑twins, this 1‑quart bottle of 20W‑60 synthetic oil delivers a thicker lubricant film where conventional oils thin out. Red Line’s ester base stocks increase film strength and ring seal, helping maintain pressure and reduce metal-to-metal contact in engines with large tolerances, performance upgrades, or persistent valvetrain noise. It’s particularly suited to air-cooled engines that run hot or have been modified with big-bore or stroker kits.\u003c\/p\u003e\n\n\u003ch3\u003eHow does 20W-60 help air-cooled V‑twin motorcycles?\u003c\/h3\u003e\n\u003cp\u003eThe higher viscosity at operating temperature preserves a stronger lubricating film between moving parts, which is helpful when cylinder clearances are larger or cooling is limited. This reduces wear and helps stabilize oil pressure under heavy loads or high ambient temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaintains thicker oil film at elevated running temperatures\u003c\/li\u003e\n  \u003cli\u003eImproves ring sealing in engines with worn or wide clearances\u003c\/li\u003e\n  \u003cli\u003eHelps sustain oil pressure during prolonged highway cruising\u003c\/li\u003e\n  \u003cli\u003eReduces metal-to-metal contact in heavily loaded components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil work in vintage Knuckleheads, Shovelheads and Panheads?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line 20W‑60 is blended specifically for air‑cooled V‑twin designs with traditionally wide tolerances. Its formulation addresses the lubrication needs of older top‑end geometries while offering modern synthetic benefits like thermal stability and ester-based film strength.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for vintage V‑twin clearances and demands\u003c\/li\u003e\n  \u003cli\u003eHelps protect fragile valve trains and crank components\u003c\/li\u003e\n  \u003cli\u003eCompatible with engines that prefer higher operating viscosity\u003c\/li\u003e\n  \u003cli\u003eReduces smoking and oil consumption compared with thin oils\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this oil a good choice for modified Evos and Twin Cams?\u003c\/h3\u003e\n\u003cp\u003eFor Evo and Twin Cam engines with big‑bore or stroker kits, or for bikes with persistent valvetrain noise, the thicker 20W‑60 viscosity can help. It supports engines under increased displacement or altered geometry by providing greater film strength and improved sealing properties.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended for big bore and stroker builds\u003c\/li\u003e\n  \u003cli\u003eHelps mitigate valvetrain clatter and noise issues\u003c\/li\u003e\n  \u003cli\u003eUseful when performance upgrades raise operating temperatures\u003c\/li\u003e\n  \u003cli\u003eWorks well where heavier oils have historically been preferred\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders of air‑cooled American V‑twin motorcycles who need a thicker, high‑temperature stable lubricant — including owners of Knuckleheads, Shovelheads, Panheads, and modified Evos or Twin Cams. Choose Red Line 12604 when your engine operates in very hot climates, has wide internal clearances, or has been modified for more power; it provides enhanced film strength and seal performance without sacrificing modern synthetic advantages.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use 20W-60 Red Line in street-driven Twin Cams?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it’s suitable for Twin Cams especially if you have big-bore or stroker kits, high temps, or valvetrain noise concerns.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 20W-60 compatible with wet-clutch systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, Red Line motorcycle oils are formulated for motorcycles; follow manufacturer recommendations for friction modifiers and clutch compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48084648067230,"sku":"B000CP8EYW","price":62.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-12604-front-quart.jpg?v=1785861684"},{"product_id":"red-line-75w-140-gl-5-synthetic-gear-oil-1-quart-for-hypoid-limited-slip-differentials-high-temp-protection","title":"Red Line 75W-140 GL-5 Synthetic Gear Oil — 1 Quart for Hypoid Limited-Slip Differentials, High-Temp Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 57914 75W-140 is a full-synthetic GL-5 gear oil formulated for hypoid limited-slip differentials, delivering high-temperature protection and built-in friction modifiers for many clutch-type LSDs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned from polyol ester base stocks, this 1-quart bottle of Red Line 75W-140 combines exceptional film strength with additives tailored for hypoid gears and limited-slip systems. It’s intended for modern cars and light trucks that specify API GL-5-level protection and benefit from synthetic stability under heavy loads and high temperatures. Note: its extreme lubricity means it isn’t suitable for most manual transmissions or transaxles that rely on friction for synchronizer operation.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gear oil protect hypoid gears under heavy load?\u003c\/h3\u003e\n\u003cp\u003eThe ester-based synthetic formula develops a robust lubricating film that resists shear and thermal breakdown, keeping gear surfaces separated even under severe pressure. This reduces wear and extends gear life while maintaining viscosity across a wide temperature range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePolyol ester base stocks provide stable viscosity and thermal resistance\u003c\/li\u003e\n  \u003cli\u003eHigh film strength reduces metal-to-metal contact and wear\u003c\/li\u003e\n  \u003cli\u003eShear-stable formulation maintains protection under high-torque conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it work with clutch-type limited-slip differentials?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line 75W-140 includes friction modifiers that make it compatible with many clutch-type LSDs without requiring aftermarket additives. However, always confirm your vehicle manufacturer’s specifications and LSD requirements before changing fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContains additives to control clutch chatter in many LSDs\u003c\/li\u003e\n  \u003cli\u003eFormulated to balance gear protection and controlled slip characteristics\u003c\/li\u003e\n  \u003cli\u003eCompatible with most clutch-type limited-slip units without extra friction modifiers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this oil be used in manual transmissions or transaxles?\u003c\/h3\u003e\n\u003cp\u003eThis product is not intended for most manual gearboxes or transaxles, because its low-friction synthetic makeup can interfere with synchronizers and cause shifting problems. For gearboxes, choose a fluid that matches the manufacturer’s recommended frictional characteristics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot recommended where synchronizer friction is required\u003c\/li\u003e\n  \u003cli\u003eMay cause shifting difficulties in many manual transmissions\u003c\/li\u003e\n  \u003cli\u003eBest reserved for differentials and applications calling for GL-5 or similar specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and specifications is it suitable for?\u003c\/h3\u003e\n\u003cp\u003eRed Line 57914 meets API GL-5 and is compatible with several other military and industry specs, making it suitable for many cars and light trucks that require hypoid gear protection. It’s commonly used in performance and heavy-duty applications including sport coupes, full-size pickups, and SUVs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets API GL-5, GL-6, MT-1, MIL-L-2105E and SAE J2360 where specified\u003c\/li\u003e\n  \u003cli\u003eCommon fits include Ford Mustang, F-150; Toyota Tundra, Sequoia; Jeep Cherokee; Dodge Ram\u003c\/li\u003e\n  \u003cli\u003eIdeal for vehicles that run heavy loads, towing, or spirited driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Enthusiasts, fleet operators, and mechanics who need a high-performance synthetic gear oil for hypoid limited-slip differentials will benefit from Red Line 75W-140. If your application calls for API GL-5-level protection and you want superior thermal stability and wear resistance without adding external friction modifiers, this formula is a strong match. Avoid using it in manual transmissions or transaxles that require specific frictional properties for synchronizer performance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W-140 safe for limited-slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it contains friction modifiers for many clutch-type LSDs, but check your vehicle’s specs first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in a manual transmission?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — its extreme slipperiness can cause synchronizer issues in most manual transmissions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086046179486,"sku":"B0045FCE5U","price":69.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-57914-front-label.jpg?v=1785882888"},{"product_id":"red-line-lightweight-shockproof-gear-oil-1-quart-low-temp-flow-high-shock-protection","title":"Red Line Lightweight Shockproof Gear Oil 1 Quart — low-temp flow \u0026 high shock protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 58404 Lightweight Shockproof Gear Oil is a 1-quart specialty lubricant engineered to deliver excellent low-temperature flow, high load-carrying film thickness, and resistance to shock loading in racing and high-performance gearboxes and differentials.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis lightweight, shockproof gear oil blends a low-friction formulation with a robust protective film, giving a balance between easy cold shifting and superior tooth protection under moderate racing loads. Developed for wet-sump transmissions, dog-ring race boxes, and differentials that experience splash lubrication, it’s widely used in road racing, stock car, and drag racing applications where consistent performance and component longevity matter.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil improve cold starts and shifting?\u003c\/h3\u003e\n\u003cp\u003eRed Line 58404 offers enhanced low-temperature flow compared with conventional heavy gear oils, so synchros and dog rings engage more cleanly when the drivetrain is cold. That smoother initial operation reduces shift effort and helps avoid missed or rough shifts during the opening laps or early morning sessions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated for improved pour and flow at low temps for faster warm-up shifting.\u003c\/li\u003e\n  \u003cli\u003eLower fluid friction than heavier SAE 75W140 oils for crisper engagement.\u003c\/li\u003e\n  \u003cli\u003eSupports cold weather or short-course race start performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protection does it offer under shock and load?\u003c\/h3\u003e\n\u003cp\u003eThis oil forms a film thicker than SAE 75W140 while maintaining low fluid friction similar to 80W gear oils, supplying both cushion and protection during shock loads. Red Line states a 40% lower coefficient of friction and roughly 250% greater load-carrying capacity than conventional gear lubricants, which helps resist tooth breakage and wear in demanding applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh film thickness for improved gear surface protection.\u003c\/li\u003e\n  \u003cli\u003eEnhanced load capacity to withstand sudden torque spikes and impact loading.\u003c\/li\u003e\n  \u003cli\u003eReduces risk of tooth chipping in dog-ring and racing differentials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich applications and gearboxes is it designed for?\u003c\/h3\u003e\n\u003cp\u003e58404 is made specifically for wet-sump transmissions and differentials that use splash lubrication, including many racing gearboxes and dog boxes. It’s popular in Hewland-style road race boxes, Bert and Brinn stock car transmissions, and clutchless drag racing gearsets like G-Force and Liberty models.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIdeal for racing transmissions with splash-lubricated gears and dog rings.\u003c\/li\u003e\n  \u003cli\u003eRecommended for performance differentials under moderate racing loads.\u003c\/li\u003e\n  \u003cli\u003eWidely used in road racing, stock car, and drag racing gearboxes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Red Line 58404 over conventional gear oils?\u003c\/h3\u003e\n\u003cp\u003eRed Line has produced performance lubricants since 1979 and designs formulations focused on both protection and performance gains. 58404 delivers a rare combination of low-temperature flow and a heavy protective film, making it a fitting choice when you need easier cold shifts without sacrificing load protection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProven brand heritage in motorsports lubricants since 1979.\u003c\/li\u003e\n  \u003cli\u003eEngineered to balance low friction and heavy film protection.\u003c\/li\u003e\n  \u003cli\u003eFormulated to resist throw-off and protect under racing conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? If you run racing transmissions, dog-ring gearboxes, or splash-lubricated differentials and need oil that eases cold shifting while protecting gears from shock and moderate loads, Red Line 58404 is built for that use. It suits track-focused hobbyists, professional racers, and anyone replacing conventional heavy gear oil with a formulation optimized for both performance and gear longevity.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 58404 in a limited-slip differential?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this oil suits many wet-sump limited-slip differentials, but confirm compatibility with your manufacturer’s friction modifier recommendations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil suitable for street driving?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It can be used on street-driven vehicles with splash-lubricated gearboxes, especially in cold climates, but it’s optimized for racing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086060236958,"sku":"B000CPI5YG","price":68.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-58404-front-label.jpg?v=1785883273"},{"product_id":"red-line-75w-90-synthetic-gear-oil-1-quart-non-slip-limited-slip-compatible","title":"Red Line 75W-90 Synthetic Gear Oil 1 Quart — Non‑Slip, Limited‑Slip Compatible","description":"\u003cp\u003e\u003cstrong\u003eRed Line 58304 75W90 Non-Slip Synthetic Gear Oil is a premium synthetic lubricant formulated to protect gears and improve drivetrain efficiency while preventing clutch slippage in limited-slip differentials.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a dependable gear oil that works across a wide range of temperatures and helps maintain smooth gear engagement, this 1-quart bottle delivers a mix of synthetic base stocks and specialized additives designed for modern manual transmissions and differentials. Made in the United States, the 75W-90 viscosity balances cold-start flow with high-temperature film strength so bearings and gear teeth stay lubricated under load.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line 75W90 help performance under heavy loads?\u003c\/h3\u003e\n\u003cp\u003eThis formulation provides a stable lubricating film that resists breakdown at high temperatures and heavy torque, reducing metal-to-metal contact and wear. That keeps gear geometry intact and supports consistent shifting and torque transfer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStable synthetic base oils for thermal and shear resistance\u003c\/li\u003e\n  \u003cli\u003eHigh film strength to protect gear teeth and bearings\u003c\/li\u003e\n  \u003cli\u003eAdditives that reduce friction and help maintain efficiency\u003c\/li\u003e\n  \u003cli\u003eWorks with a wide range of manual transmissions and differentials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil prevent limited-slip differential chatter or slipping?\u003c\/h3\u003e\n\u003cp\u003eYes—this product includes a non-slip additive package tailored for limited-slip units, minimizing chatter and helping clutch packs engage smoothly without sacrificing protection. It is engineered to preserve traction while controlling internal noise common to some differentials.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-slip formulation for clutch-type differentials\u003c\/li\u003e\n  \u003cli\u003eReduces chatter for quieter operation\u003c\/li\u003e\n  \u003cli\u003eMaintains consistent torque transfer under load\u003c\/li\u003e\n  \u003cli\u003eCompatible with many limited-slip and conventional units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this gear oil suitable for everyday driving and extreme conditions?\u003c\/h3\u003e\n\u003cp\u003eThe 75W-90 viscosity grade is versatile enough for typical daily driving and capable of handling higher-temperature, high-load situations such as towing or spirited driving. Its synthetic base helps maintain viscosity stability across a broad temperature range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGood cold start flow at 75W for easier engagement\u003c\/li\u003e\n  \u003cli\u003eRetains film strength during high-temperature operation\u003c\/li\u003e\n  \u003cli\u003eUseful for passenger cars, light trucks, and performance vehicles\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle manufacturer recommendations for best results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I choose and use this 1-quart bottle correctly?\u003c\/h3\u003e\n\u003cp\u003eCheck your owner’s manual for the required viscosity and specifications, then confirm the required fill volume for your differential or transmission. Use one quart for top-off or partial fills and purchase multiple quarts for full-service changes according to the vehicle’s capacity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify OEM specs before application\u003c\/li\u003e\n  \u003cli\u003eUse one quart for topping off or mixing where appropriate\u003c\/li\u003e\n  \u003cli\u003eChange fluid at intervals recommended by the vehicle maker\u003c\/li\u003e\n  \u003cli\u003eManufactured in the United States with universal fit type\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This 1-quart bottle of Red Line 58304 75W90 Non-Slip Synthetic Gear Oil is aimed at drivers, mechanics, and performance enthusiasts who want reliable protection for manual transmissions and differentials—especially vehicles with limited-slip designs or those frequently driven under load. It suits anyone seeking a modern synthetic gear oil that balances cold-start performance, high-temperature strength, and clutch-friendly non-slip behavior. Always consult your vehicle’s service manual for the proper viscosity and change intervals to ensure compatibility and maximize drivetrain life.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this 75W90 in allials or differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes for many manual transmissions and differentials; check your owner’s manual for required specs and limited-slip compatibility before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many quarts do I need for a full differential service?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Capacity varies by vehicle—consult your service manual. Many rear differentials take 1.5–3 quarts, so buy accordingly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086068330654,"sku":"B000CPI5Y6","price":68.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-75w90-front-bottle.jpg?v=1785883497"},{"product_id":"red-line-75w-90-gl-5-synthetic-gear-oil-quart-hypoid-limited-slip-friction-modified-protection","title":"RED LINE 75W-90 GL-5 Synthetic Gear Oil Quart — Hypoid Limited Slip, Friction-Modified Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 57904 is a fully synthetic 75W-90 GL-5 hypoid gear oil formulated with friction modifiers to work in many clutch-type limited slip differentials while providing high-temperature protection and smooth gear action.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis gear oil is engineered for passenger cars, light trucks and performance vehicles that require a GL-5 specification and benefit from a synthetic formulation. With an SAE 75W-90 viscosity, it replaces many conventional 80W-90 and SAE 90 differentials and includes additives to reduce chatter in many limited slip systems. It is not intended for most manual transmissions or transaxles where synchromesh compatibility is critical.\u003c\/p\u003e\n\n\u003ch3\u003eWill this oil work in my limited slip differential?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line 57904 includes friction modifiers to suit a wide range of clutch-type limited slip differentials without adding aftermarket additives in most cases. Always check your vehicle manufacturer’s requirements and the differential maker’s guidance before switching oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated for clutch-type limited slip systems\u003c\/li\u003e\n  \u003cli\u003eFriction modifiers already blended — usually no extra additive needed\u003c\/li\u003e\n  \u003cli\u003eCompatible with many OEM LSDs when GL-5 is acceptable\u003c\/li\u003e\n  \u003cli\u003eConsult service manual for uncommon or proprietary LSDs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the 75W-90 viscosity benefit performance and protection?\u003c\/h3\u003e\n\u003cp\u003eThe 75W-90 viscosity provides reliable film strength at high loads while offering easier cold-flow characteristics than straight SAE 90 oils. That balance helps reduce metal-to-metal contact under heavy hypoid loads and aids in smoother engagement in cooler climates.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-pressure protection for hypoid gears\u003c\/li\u003e\n  \u003cli\u003eBetter cold starting flow than SAE 90\u003c\/li\u003e\n  \u003cli\u003eMaintains viscosity at elevated operating temperatures\u003c\/li\u003e\n  \u003cli\u003eSuitable replacement for many 80W-90 or SAE 90 specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this oil suitable for my transmission or transaxle?\u003c\/h3\u003e\n\u003cp\u003eNo — this product is optimized for differentials, not most manual transmissions or transaxles that rely on synchronizers. Its extreme slipperiness can interfere with synchronizer engagement and cause shifting problems in gearboxes designed for higher-friction oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot recommended for most synchromesh transmissions\u003c\/li\u003e\n  \u003cli\u003eAvoid use where manufacturer specifies gear oil formulated for transmissions\u003c\/li\u003e\n  \u003cli\u003eUse only in gear sets\/differentials calling for GL-5 or compatible specs\u003c\/li\u003e\n  \u003cli\u003eCheck OEM documentation if unsure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat specifications and approvals does this product meet?\u003c\/h3\u003e\n\u003cp\u003eRed Line 57904 meets GL-5 performance standards and is formulated to exceed the demands of MIL-L-2105E and related specifications. It is a practical choice where manufacturers accept GL-5 oils and can serve as a direct replacement for many 80W-90 or SAE 90 differential recommendations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAPI GL-5 level performance\u003c\/li\u003e\n  \u003cli\u003eCompatible with GL-6 and MT-1 environments where GL-5 is permitted\u003c\/li\u003e\n  \u003cli\u003eMeets MIL-L-2105E and SAE J2360 targets\u003c\/li\u003e\n  \u003cli\u003eAcceptable alternative to Chrysler MS-9763 and similar specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line 57904 75W-90 is aimed at owners of passenger cars, light trucks, and performance or racing vehicles that require a GL-5 hypoid gear oil and want the benefits of a synthetic formulation with LSD compatibility. It suits mechanics and enthusiasts who need superior high-load protection and smoother operation in differentials, while those seeking a transmission oil for synchromesh gearboxes should choose a product specified for transmissions. Always verify recommended viscosity and spec with your vehicle manufacturer before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 57904 in a limited slip differential without extra additives?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Usually yes—this oil contains friction modifiers suitable for many clutch-type LSDs; check your differential manual for uncommon systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W-90 safe for manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—its slipperiness can impair synchronizers. Use transmission-specific oil where the manufacturer requires it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RED LINE","offers":[{"title":"Default Title","offer_id":48086191538334,"sku":"B000CPCBF0","price":66.04,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-57904-front-quart-packaging.jpg?v=1785889224"},{"product_id":"red-line-75w80-gl-4-manual-transmission-gear-oil-1-quart-synchromesh-safe-smooth-shifting","title":"Red Line 75W80 GL-4 Manual Transmission Gear Oil - 1 Quart, Synchromesh-Safe Smooth Shifting","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50204 SAE 75W80 API GL-4 is a high-performance manual transmission and transaxle lubricant engineered to protect gears and synchronizers while delivering smooth, predictable shifts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis full product description explains what makes this 1-quart bottle of Red Line 75W80 GL-4 gear oil suited for many manual transmissions and transaxles. It’s formulated to balance friction for synchromesh systems, avoid the reactive sulfur chemistries found in GL-5 fluids that can harm brass synchros, and extend component life under normal and spirited driving conditions. Below you’ll find concise answers to common buyer questions, concrete performance specifics, and guidance on who should choose this lubricant.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect gears and synchronizers?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line’s 75W80 GL-4 uses a blend optimized for gear surface protection without excess slipperiness, preserving synchro engagement and minimizing wear. It provides a robust film strength that resists shear and helps maintain gear geometry during load cycles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFormulated for GL-1, GL-3 and GL-4 applications where synchromesh compatibility is required\u003c\/li\u003e\n  \u003cli\u003eBalanced friction modifiers to support consistent, positive shifts\u003c\/li\u003e\n  \u003cli\u003eShear-stable base to maintain viscosity under stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil work with transmissions that have brass synchros?\u003c\/h3\u003e\n\n\u003cp\u003eYes — this GL-4 specification avoids the reactive sulfurous additives commonly used in GL-5 fluids that can corrode brass and bronze synchronizers. That makes it a safer option where manufacturers call for GL-4 or approved synchromesh fluids.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFree from aggressive sulfur-phosphorus chemistries that attack yellow metals\u003c\/li\u003e\n  \u003cli\u003eRecommended where most special synchromesh fluids are specified\u003c\/li\u003e\n  \u003cli\u003eSuitable for older and modern manual gearboxes that list GL-4\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and transmissions commonly use this product?\u003c\/h3\u003e\n\n\u003cp\u003eRed Line 75W80 GL-4 is popular across a range of passenger cars, sport compacts and light trucks. It’s commonly specified by owners of European and Asian manual gearboxes as well as many domestic transmissions that require GL-4 or similar synchromesh-safe formulations.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCommon fits: BMW, Honda\/Acura, Ford Focus, late-model Mini Cooper\u003c\/li\u003e\n  \u003cli\u003eAlso used in Land Rover\/Range Rover LT77S and several Mitsubishi manual boxes\u003c\/li\u003e\n  \u003cli\u003eCompatible with many Dodge \u0026amp; Jeep NV series truck transmissions (NV1500, NV3500, NV3550, NV5600)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this product affect shift feel and performance?\u003c\/h3\u003e\n\n\u003cp\u003eThis lubricant is tuned to offer quicker, more confident shifts by providing a controlled friction level for synchronizers. Unlike some synthetic gear oils that can be too slippery, Red Line’s formula aims for repeatable engagement and reduced shift hesitation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBalanced friction control for more consistent shift engagement\u003c\/li\u003e\n  \u003cli\u003eHelps reduce gear grind and synchronizer wear during shifts\u003c\/li\u003e\n  \u003cli\u003eMaintains performance across a broad temperature range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? Red Line 50204 SAE 75W80 API GL-4 is intended for car and light-truck owners, mechanics, and performance enthusiasts who need a synchromesh-safe manual transmission lubricant. Choose this oil if your vehicle’s service specs call for a GL-4 or similar synchromesh fluid, if you want improved shift feel without risking brass synchronizers, or if you operate vehicles listed among typical applications like BMW, Honda\/Acura, Mini Cooper, and several Nissan\/Jeep\/Dodge transmissions. For best results, always refer to your vehicle manufacturer’s manual for approved viscosities and change intervals before switching lubricants.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 75W80 GL-4 safe for brass synchronizers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s a GL-4 formulation that avoids aggressive sulfur additives, making it safe for brass and bronze synchronizers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in my BMW or Honda manual transmission?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Often yes — it’s commonly recommended for many BMW and Honda\/Acura manual boxes, but check your owner’s manual for required specs first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086192816286,"sku":"B000CPCBEG","price":67.96,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50204-front-label_30adb665-70f0-4d0a-9bc1-907e90ffd7ba.jpg?v=1785889286"},{"product_id":"red-line-full-synthetic-v-twin-gear-transmission-oil-1-quart-shockproof-noise-dampening-formula","title":"Red Line Full Synthetic V-Twin Gear \u0026 Transmission Oil - 1 Quart, Shockproof Noise-Dampening Formula","description":"\u003cp\u003e\u003cstrong\u003eRed Line 42804 is a full-synthetic V-Twin transmission and gear oil formulated with Shockproof technology to reduce shifting clunks, resist throw-off, and protect gears under high-impact loads.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis quart of Red Line 42804 full synthetic gear oil is engineered for V-Twin transmissions and a variety of powersports drivetrains. It blends advanced synthetic base stocks with a tailored additive package to lower operating temperatures, maintain thicker oil films between teeth, and dampen the harsh shift noises common to many motorcycle and UTV gearboxes. The formula is suitable for JASO MA\/MA2 clutch-compatible applications and is widely selected by riders who want improved durability and smoother shifts without compromising clutch performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line 42804 improve shifting in V-Twin transmissions?\u003c\/h3\u003e\n\u003cp\u003eRed Line 42804 includes noise-dampening and impact-resistant chemistry that reduces the characteristic clunk and annoyance of abrupt shifts. The product’s Shockproof feature cushions gear engagement and stabilizes gear loads for quieter, smoother operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShockproof additives absorb sudden impact during shifts.\u003c\/li\u003e\n  \u003cli\u003eMaintains a thicker lubricating film between gear teeth.\u003c\/li\u003e\n  \u003cli\u003eReduces transmission noise and clutch drag in JASO MA\/MA2 systems.\u003c\/li\u003e\n  \u003cli\u003eResists throw-off under high centrifugal forces found in V-Twins.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil protect gears and reduce heat in powersports use?\u003c\/h3\u003e\n\u003cp\u003eThe synthetic base stocks and performance additives in 42804 lower operating temperatures and enhance film strength, helping to prevent metal-to-metal contact under load. That combination improves gear life and maintains consistent performance during extended rides or heavy-duty use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproves thermal stability to reduce gearbox temperatures.\u003c\/li\u003e\n  \u003cli\u003eCreates resilient oil films that resist breakdown under high pressure.\u003c\/li\u003e\n  \u003cli\u003eMinimizes wear on gear teeth and bearings for longer component life.\u003c\/li\u003e\n  \u003cli\u003eSuited for ATVs, UTVs, sportbikes, and other powersports vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this compatible with my motorcycle or side-by-side clutch system?\u003c\/h3\u003e\n\u003cp\u003eYes—Red Line 42804 is formulated for applications requiring JASO MA and MA2 compatibility, meaning it will not interfere with wet clutch engagement when used as directed. Always consult your owner’s manual for the manufacturer’s recommended viscosity and spec.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets JASO MA\/MA2 clutch compatibility requirements.\u003c\/li\u003e\n  \u003cli\u003eDesigned for V-Twin transmissions and many powersports gearboxes.\u003c\/li\u003e\n  \u003cli\u003eAvailable in a convenient 1-quart container for single-service refills.\u003c\/li\u003e\n  \u003cli\u003eCheck OEM specs to confirm viscosity and service intervals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store this gear oil to get the best results?\u003c\/h3\u003e\n\u003cp\u003eUse Red Line 42804 at the service intervals recommended by your vehicle manufacturer, and refill or top off with clean fluid to maintain optimum film strength. Store the quart upright in a cool, dry place away from direct sunlight and contaminants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply during routine transmission service or when replacing worn oil.\u003c\/li\u003e\n  \u003cli\u003eKeep bottle sealed and upright to avoid contamination or spills.\u003c\/li\u003e\n  \u003cli\u003eDispose of used oil responsibly at an approved recycling center.\u003c\/li\u003e\n  \u003cli\u003eUse proper tools and follow torque specs when opening drain\/fill plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Riders and powersports owners who want a high-performance, full-synthetic gear oil tailored to V-Twin transmissions and similar drivetrains will benefit from Red Line 42804. It’s ideal for those seeking quieter shifting, improved thermal control, and stronger oil films to protect gears and bearings—especially in ATVs, UTVs, sportbikes, and other vehicles where JASO MA\/MA2 compatibility matters. If you demand durable protection and smoother operation from a quart-sized, ready-to-use formulation, this product is built for you.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line 42804 safe for wet clutches?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. 42804 is JASO MA\/MA2 compatible and formulated not to interfere with wet clutch engagement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this oil in ATVs and UTVs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s designed for powersports vehicles including ATVs, UTVs, and sportbikes needing synthetic gear oil.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086218834078,"sku":"B004X973EA","price":67.01,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-42804-front-label_89342c5e-2cb1-4f14-9457-5a3687633778.jpg?v=1785890268"},{"product_id":"red-line-mt-85-75w-85-gl-4-manual-transmission-gear-oil-1-quart-synchro-safe-protection","title":"Red Line MT-85 75W-85 GL-4 Manual Transmission Gear Oil — 1 Quart, Synchro-Safe Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50504 MT-85 is a 75W-85 GL-4-rated manual transmission gear oil formulated to protect gears and synchromesh while promoting smooth, quick shifts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for performance-oriented and everyday manual transmissions, this 1-quart bottle of Red Line MT-85 targets vehicles that require GL-4 friction characteristics and brass-safe lubrication. It delivers long-lasting gear protection, helps preserve synchro life, and provides consistent shifting feel even in cooler conditions. MT-85 is widely recommended across various makes, including Nissan, Mitsubishi, Hyundai, Kia, and Quaife-equipped gearboxes.\u003c\/p\u003e\n\n\u003ch3\u003eHow does MT-85 improve shifting performance?\u003c\/h3\u003e\n\u003cp\u003eMT-85 balances friction and lubricity to minimize harsh engagement and reduce shift effort. Its formulation keeps synchromesh surfaces functioning smoothly so you get crisper, more predictable gear changes, especially during cold starts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e75W-85 viscosity for reliable cold-start shiftability\u003c\/li\u003e\n  \u003cli\u003eControlled friction profile to protect and assist synchromesh\u003c\/li\u003e\n  \u003cli\u003eStable film strength under load to prevent gear wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for transmissions with brass synchronizers?\u003c\/h3\u003e\n\u003cp\u003eYes—MT-85 is a GL-4-rated oil that avoids the reactive sulfur compounds found in many GL-5 formulations, which can damage brass and bronze synchros. That makes it suitable where manufacturers specify GL-1, GL-3, or GL-4 fluids, and where special synchromesh lubricants are required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-4 chemistry safe for brass and bronze synchros\u003c\/li\u003e\n  \u003cli\u003eRecommended where special synchromesh fluids are called for\u003c\/li\u003e\n  \u003cli\u003eReduces synchro wear for extended component life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and applications commonly use MT-85?\u003c\/h3\u003e\n\u003cp\u003eMT-85 is popular in a wide range of manual transmissions: from Nissan sports cars like the 350Z\/370Z to family sedans and performance boxes in Mitsubishi, Hyundai, Kia, and Quaife-equipped gearsets. It’s a practical choice for enthusiasts upgrading fluids and for routine service when GL-4 is specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNissan 350Z and 370Z manuals; many Maxima, Altima, Sentra gearboxes\u003c\/li\u003e\n  \u003cli\u003eMitsubishi Evolution and similar performance-oriented transmissions\u003c\/li\u003e\n  \u003cli\u003eHyundai and Kia manual transmissions that call for GL-4\u003c\/li\u003e\n  \u003cli\u003eAftermarket Quaife differentials and synchro systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will MT-85 affect maintenance and component longevity?\u003c\/h3\u003e\n\u003cp\u003eUsing the correct GL-4 fluid helps reduce gear and synchronizer wear, which can extend service intervals and lower repair costs. MT-85’s formulation aims to maintain film strength under pressure while providing friction control, supporting longer synchro life and consistent gearbox feel over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProtects gears from wear under load\u003c\/li\u003e\n  \u003cli\u003eHelps prolong synchromesh life and performance\u003c\/li\u003e\n  \u003cli\u003eSupports reliable shifting across temperature ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and mechanics who need a brass-safe GL-4 manual transmission oil that blends performance and protection—ideal for owners of Nissan 350Z\/370Z, many Maxima\/Altima\/Sentra models, Mitsubishi Evolution, various Hyundai and Kia manuals, and aftermarket Quaife synchro systems. It’s also a strong choice for anyone seeking improved shift quality and longer synchro life without resorting to GL-5 chemistry.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use MT-85 instead of GL-5 oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—MT-85 is GL-4 and is formulated for brass synchros; GL-5 contains reactive additives that can harm brass synchronizers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What viscosity is MT-85 and is it good in cold climates?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: MT-85 is 75W-85. Its cold-start properties help smoother shifts in cooler temperatures while maintaining protection under load.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086223356062,"sku":"B004D4URV6","price":68.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-mt-85-front-bottle.jpg?v=1785890470"},{"product_id":"red-line-waterwetter-coolant-additive-12-oz-2-pack-improves-heat-transfer-and-corrosion-protection","title":"Red Line WaterWetter coolant additive — 12 oz 2-pack, improves heat transfer and corrosion protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line WaterWetter Super Coolant is a concentrated additive that improves water’s heat transfer and helps guard cooling systems against rust and deposits.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for engines where peak cooling performance matters, this WaterWetter concentrate enhances the ability of plain water or diluted antifreeze to move heat away from the engine. It’s commonly used by racers, performance enthusiasts, and anyone seeking lower operating temperatures or reduced antifreeze concentrations in warm climates. The product works with glycol-based antifreezes and can be used with straight water in certain applications where corrosion control is still needed.\u003c\/p\u003e\n\n\u003ch3\u003eHow does WaterWetter help engines run cooler?\u003c\/h3\u003e\n\u003cp\u003eWaterWetter lowers the surface tension of coolant, allowing liquid to more effectively contact and pull heat from metal surfaces. That improved wetting increases the efficiency of heat transfer across the entire cooling circuit, which can reduce peak temperatures under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContains a concentrated wetting agent formulated for heat transfer improvement\u003c\/li\u003e\n  \u003cli\u003eReduces localized hot spots by improving coolant contact with engine surfaces\u003c\/li\u003e\n  \u003cli\u003eSuitable for use with straight water or reduced antifreeze mixtures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this product protect my cooling system from rust and corrosion?\u003c\/h3\u003e\n\u003cp\u003eYes—WaterWetter includes corrosion inhibitors that allow the use of straight water in performance or racing applications while still reducing rust and deposit formation. It’s formulated to work alongside ethylene- or propylene-glycol antifreezes to maintain corrosion protection when used as directed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets industry-standard corrosion testing for glycol-based coolants\u003c\/li\u003e\n  \u003cli\u003eHelps prevent scale and rust when used at the recommended dose\u003c\/li\u003e\n  \u003cli\u003eCompatible with newer long-life antifreezes and DEX‑COOL formulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much should I add and how do I use it?\u003c\/h3\u003e\n\u003cp\u003eDosage is simple: one 12-ounce bottle treats most passenger cars and light-truck systems holding roughly 3–5 gallons (13–16 liters). Larger cooling systems may require two bottles; very small systems can be dosed by the ounce. Add it to the coolant overflow, radiator, or during a coolant change, then fill to the proper level and run the engine to circulate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard treatment: one 12 oz bottle per 3–5 gallons of coolant\u003c\/li\u003e\n  \u003cli\u003eLarge systems: use two bottles for full coverage\u003c\/li\u003e\n  \u003cli\u003eSmall systems: add approximately 1 oz per quart as needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it safe to use with existing antifreeze products?\u003c\/h3\u003e\n\u003cp\u003eWaterWetter is formulated to be compatible with conventional ethylene- and propylene-glycol antifreezes, including long-life and DEX‑COOL types. It enhances heat transfer without replacing the freeze\/boil protection properties of antifreeze; follow antifreeze manufacturer instructions for mixture concentration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with most glycol-based antifreezes to improve thermal performance\u003c\/li\u003e\n  \u003cli\u003eNot a replacement for antifreeze—use alongside proper coolant concentrations\u003c\/li\u003e\n  \u003cli\u003eSuitable for use in performance and daily-driven vehicles when dosed correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line WaterWetter is aimed at performance drivers, racers, tuners, and vehicle owners in warm climates who want improved cooling efficiency or who run reduced antifreeze concentrations. It’s also useful for anyone performing maintenance who wants better heat transfer and reduced scale or rust formation without changing their existing coolant brand.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use WaterWetter with straight water?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—when corrosion inhibitors are needed, WaterWetter lets you use straight water in certain applications while reducing rust and improving heat transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many bottles do I need for a large truck?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most passenger cars use one 12 oz bottle; larger cooling systems typically require two bottles for full treatment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086302621854,"sku":"B00NQ9STKA","price":75.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/redline-front-label.jpg?v=1785894475"},{"product_id":"red-line-75w85-gl-5-full-synthetic-gear-oil-1-quart-hypoid-limited-slip-differential-protection-friction-modifiers","title":"Red Line 75W85 GL-5 Full-Synthetic Gear Oil 1 Quart — Hypoid \u0026 Limited Slip Differential Protection, Friction Modifiers","description":"\u003cp\u003e\u003cstrong\u003eRed Line 50104 is a full-synthetic 75W85 GL-5 gear oil formulated for hypoid and clutch-type limited slip differentials, offered in a 1-quart container.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis gear oil blends advanced synthetic base stocks with dedicated friction modifiers to protect gears and support clutch-type limited slip (LSD) differentials. It meets multiple SAE viscosity specifications and is engineered for final drives, transfer cases, and many limited slip applications where controlled friction and thermal stability are required. While excellent for many differential and final drive uses, it is not intended for most synchronized manual transmissions where excessive slipperiness could affect shift feel.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line 75W85 protect hypoid gears under load?\u003c\/h3\u003e\n\u003cp\u003eThe full-synthetic formula forms a durable lubricating film that resists breakdown under high pressure and elevated temperatures common in hypoid gearsets. That protective film helps limit metal-to-metal contact and reduces long-term wear without relying solely on viscosity thickness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced synthetic base stocks for thermal stability and shear resistance\u003c\/li\u003e\n  \u003cli\u003eGL-5 additive package designed for extreme pressure gear contacts\u003c\/li\u003e\n  \u003cli\u003eReduced metal wear under sustained torque and shock loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this lubricant work with my clutch-type limited slip differential?\u003c\/h3\u003e\n\u003cp\u003eYes — Red Line 50104 contains supplemental friction modifiers tailored to clutch-type limited slip units, so most LSDs will operate without additional additives. For rare or legacy units with unusual friction requirements, consult the differential builder or service manual before switching oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes compatibility additives for many clutch-style LSDs\u003c\/li\u003e\n  \u003cli\u003eEliminates need for aftermarket friction modifiers in most cases\u003c\/li\u003e\n  \u003cli\u003eCheck manufacturer guidance for unique or vintage LSD designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and drivetrain components benefit from this oil?\u003c\/h3\u003e\n\u003cp\u003eThis 75W85 GL-5 oil is commonly used in final drives, differentials, transfer cases and some racing transaxles across domestic and import models. It’s popular in late-model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, and Toyota differentials, and in many single- and sequential-transaxle race applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAppropriate for many modern passenger car and light-truck differentials\u003c\/li\u003e\n  \u003cli\u003eUsed in performance and racing transaxles like Hewland LD-200 and FTR units\u003c\/li\u003e\n  \u003cli\u003eAlso suitable as final drive and transfer case fluid where GL-5 is specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there any service or compatibility cautions I should know?\u003c\/h3\u003e\n\u003cp\u003eAlthough this oil satisfies several SAE viscosity ranges, it is not designed for synchronized manual transmissions sensitive to very low friction oils. Always confirm the vehicle manufacturer’s specs and avoid use in systems that require specific transmission fluids or synchronized shift-friendly lubricants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets SAE 75W85 and related viscosity designations, plus GL-5 performance\u003c\/li\u003e\n  \u003cli\u003eNot recommended for most synchronized manuals or transaxles with sensitive shift feel\u003c\/li\u003e\n  \u003cli\u003eConsult your owner’s manual or a technician for unusual or sealed systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? Red Line 50104 75W85 is aimed at enthusiasts, technicians, and fleet owners who need a high-performance synthetic gear oil for hypoid and clutch-type limited slip differentials. If you maintain late-model European or domestic differentials, install performance transaxles, or require a thermally stable, shear-resistant lubricant for final drives and transfer cases, this formula provides focused protection and LSD compatibility. Avoid this product only if your vehicle specifically calls for a synchronized-transmission fluid or a non-friction-modified gear oil.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line 50104 in a transfer case?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s suitable for many transfer cases where GL-5 and 75W85 viscosities are accepted; confirm your manufacturer’s recommendations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil safe for synchronized manual transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This formula may be too slippery for many synchronized manuals and can affect shifting—use the vehicle-specified transmission fluid instead.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086304325790,"sku":"B000J3G8KE","price":68.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-50104-front-label.jpg?v=1785894537"},{"product_id":"red-line-si-1-complete-fuel-system-cleaner-4-oz-concentrated-tank-treatment-cleans-injectors-prevents-corrosion","title":"Red Line SI-1 Complete Fuel System Cleaner — 4 oz Concentrated Tank Treatment, Cleans Injectors \u0026 Prevents Corrosion","description":"\u003cp\u003e\u003cstrong\u003eRed Line SI-1 Complete Fuel System Cleaner is a concentrated 4 oz fuel additive designed to clean and help prevent corrosion across fuel injectors, carburetors, valves and combustion chambers in a single tank treatment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeep modern and classic engines running cleaner with a laboratory-formulated additive that targets deposits and stabilizes gasoline. This compact 4 oz bottle treats a full tank, delivering detergents that dissolve gum, varnish and carbon buildup while protecting metal surfaces from corrosive attack. It’s suited for gasoline engines where cleaning deposits can restore responsiveness and help maintain emissions performance over time.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line SI-1 remove deposits from injectors and carburetors?\u003c\/h3\u003e\n\u003cp\u003eThe formula combines high- and low-temperature detergents that loosen and dissolve fuel varnish and carbon deposits. When added to a tank, these agents circulate with fuel to reach injectors and carburetor passages, breaking films and restoring spray patterns and idle quality.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConcentrated detergent blend works across temperature ranges\u003c\/li\u003e\n  \u003cli\u003eTargets injector tips, throttle bodies and carburetor jets\u003c\/li\u003e\n  \u003cli\u003eOne 4 oz bottle treats a full fuel tank for effective cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this help engine efficiency and fuel economy?\u003c\/h3\u003e\n\u003cp\u003eRemoving combustion-choking deposits improves fuel atomization and combustion consistency, which can translate into smoother running and potentially better miles per gallon. While exact gains depend on vehicle condition, the product improves fuel stability and reduces gum that hinders efficient fuel flow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePromotes more complete fuel burn through cleaner injectors\u003c\/li\u003e\n  \u003cli\u003eReduces formation of varnish and gum that impede flow\u003c\/li\u003e\n  \u003cli\u003eHelps maintain exhaust system performance by reducing deposit-related emissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the 4 oz bottle for best results?\u003c\/h3\u003e\n\u003cp\u003ePour the entire 4 oz bottle into a nearly full tank of gasoline, then refill to mix the additive with fuel for one complete treatment cycle. Use as a preventive maintenance step or when symptoms of deposits appear, such as rough idle, hesitation or reduced throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one 4 oz bottle per tank for most passenger cars and light trucks\u003c\/li\u003e\n  \u003cli\u003eBest used with a full tank to ensure proper dilution and circulation\u003c\/li\u003e\n  \u003cli\u003eSafe for most gasoline engines—follow vehicle manufacturer guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Red Line SI-1 is intended for drivers and technicians who want a compact, high-strength cleaner to restore fuel system cleanliness and reduce corrosion risk. It’s a practical choice for everyday commuter cars, performance vehicles, older engines with buildup, and anyone looking to maintain throttle response and combustion efficiency without disassembly. Use it as part of routine fuel system maintenance or before inspections to help ensure optimum engine operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use Red Line SI-1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one 4 oz bottle per tank as needed—typically during signs of buildup or as periodic maintenance every few thousand miles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is SI-1 safe for catalytic converters and oxygen sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SI-1 is designed for gasoline engines and is compatible with emission control components when used as directed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086820847774,"sku":"B000AUKXTS","price":50.46,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si-1-front-packaging_666fb0ff-f1b4-4c19-8aa7-3cd14ceaa1fe.jpg?v=1785906602"},{"product_id":"red-line-30504-d4-synthetic-automatic-transmission-fluid","title":"Red Line 30504 D4 Synthetic Automatic Transmission Fluid","description":"\u003cp\u003e\u003cstrong\u003eRed Line 30504 D4 is a fully synthetic automatic transmission fluid engineered to protect gears and synchronizers while delivering smooth shifts across a wide range of automatic and manual gearboxes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis high-performance quart of Red Line D4 Synthetic ATF blends advanced lubricant chemistry and balanced friction characteristics to serve in many vehicle applications where Dexron, Mercon or manufacturer-specified ATF types are recommended. It was formulated to protect gear teeth and synchronizers, improve cold-weather shiftability, and offer GL-4-level gear protection that makes it suitable for some manual transmissions and transaxles as well as automatic gearboxes and power steering systems.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line D4 improve shifting and gear protection?\u003c\/h3\u003e\n\u003cp\u003eRed Line D4 uses a synthetic base with additives tuned to provide the right amount of slipperiness for smooth, crisp shifts without sacrificing gear protection. Its formula reduces wear on synchros and gears while maintaining consistent friction characteristics over a broad temperature range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBalanced friction modifiers to prevent clutch chatter and ensure positive engagements\u003c\/li\u003e\n  \u003cli\u003eWear inhibitors that protect gear teeth and synchronizers under load\u003c\/li\u003e\n  \u003cli\u003eLow-temperature flow properties for easier cold starts and smoother initial shifts\u003c\/li\u003e\n  \u003cli\u003eStable viscosity to maintain protection at high operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and transmissions is this ATF compatible with?\u003c\/h3\u003e\n\u003cp\u003eD4 is intentionally versatile: it meets many legacy and modern OEM specifications, making it a convenient choice for mixed fleets or owners of older vehicles requiring specific Dexron or Mercon fluids. It’s also compatible with several manual transmissions and transaxles that benefit from GL-4-level gear protection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible where Dexron III, Dexron II, Mercon and Mercon V are specified\u003c\/li\u003e\n  \u003cli\u003eSuitable for Toyota Type T-III and T-IV, Honda ATF-Z1, Nissan Matic D\/J\/K\u003c\/li\u003e\n  \u003cli\u003eWorks with Mazda ATF M-V, Diamond SP-II\/SP-III applications\u003c\/li\u003e\n  \u003cli\u003eAppropriate for many BMW, Audi and VW automatic transmissions and some manual transaxles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use Red Line D4 in manual transmissions and power steering systems?\u003c\/h3\u003e\n\u003cp\u003eYes. While formulated as an ATF, D4 provides GL-4 level gear protection making it suitable for certain manual transmissions and transaxles (T-5, T-45, T-56 and similar) and safe for power steering systems where ATF is required. Always consult the vehicle manufacturer’s service manual before swapping fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApproved for select manual transmissions requiring GL-4 protection\u003c\/li\u003e\n  \u003cli\u003eAdequate shear stability for transaxles and high-torque applications\u003c\/li\u003e\n  \u003cli\u003eCompatible with power steering units specified for ATF use\u003c\/li\u003e\n  \u003cli\u003eNot a universal replacement—verify OEM fluid specifications first\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance benefits can I expect over conventional ATF?\u003c\/h3\u003e\n\u003cp\u003eBecause D4 is fully synthetic, it offers improved thermal and oxidative stability, reduced viscosity breakdown, and more consistent protection over longer service intervals compared with many conventional fluids. Drivers often notice improved shift feel and longer component life in demanding conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhanced thermal tolerance reduces breakdown under high heat\u003c\/li\u003e\n  \u003cli\u003eBetter low-temperature performance for cold-weather operation\u003c\/li\u003e\n  \u003cli\u003eReduced wear and extended transmission life when used as recommended\u003c\/li\u003e\n  \u003cli\u003eImproved long-term stability versus standard mineral-based ATFs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 30504 D4 is aimed at DIY enthusiasts, mechanics, and fleet managers who need a versatile, high-quality synthetic ATF that covers many Dexron and Mercon applications and also serves selected manual transmissions and power steering systems. It’s a practical choice if you want stronger gear protection, smoother shifts in cold weather, and a single fluid that fits multiple vehicle makes and models — but always confirm compatibility with your vehicle’s service recommendations before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Red Line D4 compatible with Dexron and Mercon specs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. D4 is formulated for use where Dexron II\/III and Mercon\/Mercon V are recommended, but always check your owner’s manual first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use D4 in a manual transmission?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: In many cases yes—D4 provides GL-4 level gear protection and works in select manuals and transaxles; verify your specific transmission requirements beforehand.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086864920734,"sku":"B000CPI5XM","price":55.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-d4-quart-front-label.jpg?v=1785908565"},{"product_id":"red-line-60103-si-1-complete-fuel-system-cleaner","title":"Red Line 60103 SI-1 Complete Fuel System Cleaner","description":"\u003cp\u003e\u003cstrong\u003eRed Line SI-1 Complete Fuel System Cleaner is a concentrated 15-ounce treatment that removes injector, carburetor, valve and combustion-chamber deposits while helping prevent fuel-system corrosion.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngine deposits, varnish and corrosion can reduce performance and fuel economy; Red Line's SI-1 formula is designed as a one-bottle-per-tank service to dissolve those deposits and restore more consistent fuel flow. The product combines high- and low-temperature detergents to attack a range of contaminants and stabilize gasoline to limit gum and varnish formation. That makes it suitable for periodic maintenance or targeted cleaning when drivability issues arise.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this cleaner improve engine drivability?\u003c\/h3\u003e\n\u003cp\u003eSI-1 targets deposits on injectors, carburetors and valves that cause rough idling, hesitation and reduced throttle response. By dissolving buildups and restoring spray patterns and airflow, the engine runs smoother and responds more predictably under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBreaks down carbon, gum and varnish on fuel-system components.\u003c\/li\u003e\n  \u003cli\u003eRestores injector spray patterns for consistent atomization.\u003c\/li\u003e\n  \u003cli\u003eReduces stumbling, misfire risk, and hesitation during acceleration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the recommended use and dosing instructions?\u003c\/h3\u003e\n\u003cp\u003eOne 15-ounce bottle is intended to treat a single tank of gasoline for most vehicles; pour the full bottle into the fuel tank before refueling. For severely contaminated systems or high-mileage engines, follow up with additional treatments per the manufacturer's guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse one bottle per tank for standard treatments.\u003c\/li\u003e\n  \u003cli\u003ePour into tank prior to or during refueling for proper mixing.\u003c\/li\u003e\n  \u003cli\u003eRepeat as needed for heavy deposits or at scheduled maintenance intervals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this product protect against corrosion and fuel instability?\u003c\/h3\u003e\n\u003cp\u003eSI-1 includes components intended to help reduce corrosion and stabilize gasoline to slow gum and varnish formation. While it supports longer-term cleanliness, routine use or periodic maintenance treatments are recommended to maintain protection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps stabilize gasoline to limit oxidation-related deposits.\u003c\/li\u003e\n  \u003cli\u003eFormulated to reduce corrosive effects in fuel-system components.\u003c\/li\u003e\n  \u003cli\u003eMinimizes new gum and varnish buildup between services.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and fuel types is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eDesigned primarily for gasoline engines, SI-1 is suitable for a broad range of port- and direct-injected systems and carbureted engines. Always consult vehicle manufacturer recommendations before use and avoid use in diesel engines or systems specified otherwise.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSafe for most gasoline-powered cars, trucks and motorcycles.\u003c\/li\u003e\n  \u003cli\u003eWorks with carbureted and fuel-injected systems.\u003c\/li\u003e\n  \u003cli\u003eNot intended for diesel engines unless specified by manufacturer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 60103 SI-1 is aimed at vehicle owners and technicians who want a concentrated, professional-grade fuel-system treatment to restore injector and carburetor function, reduce deposits, and help limit corrosion. It's a practical choice for regular maintenance, pre- or post-storage treatment, and troubleshooting drivability issues on gasoline engines.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use Red Line SI-1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use one 15 oz bottle per tank as needed; for routine maintenance, apply every few fill-ups or per driving conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is SI-1 safe for direct-injection engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, SI-1 is formulated for both port- and direct-injection gasoline engines; follow vehicle manufacturer guidance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086866526366,"sku":"B000CPI5Z0","price":52.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-si-1-front-label.jpg?v=1785908607"},{"product_id":"red-line-cv-2-synthetic-cv-grease-14-oz-jar-with-red-moly-high-temp-extreme-pressure-protection","title":"Red Line CV-2 Synthetic CV Grease — 14 oz Jar with Red Moly, High-Temp \u0026 Extreme-Pressure Protection","description":"\u003cp\u003e\u003cstrong\u003eRed Line 80401 CV-2 is a high-performance synthetic grease cartridge formulated with red molybdenum for extreme-pressure protection in CV joints, U-joints and bearings.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis synthetic CV grease blends advanced base oils and a red moly friction modifier to deliver long-lasting lubrication where heavy loads, wide temperature swings and water exposure are common. Packaged in a 14-ounce jar-sized cartridge, it fits grease guns and service kits for automotive and off-road drivetrain maintenance. The formula emphasizes oxidation resistance, seal compatibility, and minimal oil separation so components run smoothly and retain protection over time.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Red Line CV-2 perform under heavy load and pressure?\u003c\/h3\u003e\n\n\u003cp\u003eCV-2 includes a red molybdenum friction additive and a shear-stable thickener to form a durable lubricating film that resists metal-to-metal contact under extreme pressure. It prevents scuffing and reduces wear during high-angle operation and repeated torque cycles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRed moly improves boundary lubrication at contact points.\u003c\/li\u003e\n  \u003cli\u003eShear-stable structure maintains consistency under cyclic loads.\u003c\/li\u003e\n  \u003cli\u003eRated for applications where high pressure and impact occur.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it work in a wide temperature range and harsh environments?\u003c\/h3\u003e\n\n\u003cp\u003eThe grease is formulated for exceptional thermal stability, functioning across a broad operating range from very low to very high temperatures. It resists oxidation and has low evaporation, so it keeps lubricating properties even after extended exposure to heat, cold or moisture.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOperational performance from low temperatures up to 500°F.\u003c\/li\u003e\n  \u003cli\u003eStrong resistance to oxidation extends service life.\u003c\/li\u003e\n  \u003cli\u003eLow oil separation minimizes leakage and mess around seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it compatible with seals and typical drivetrain components?\u003c\/h3\u003e\n\n\u003cp\u003eCV-2 is engineered to be seal-friendly with minimal swelling or degradation of common rubber and elastomer materials in CV boots and bearing seals. Its formulation balances tack and flow so it stays where needed without attacking hoses or boots.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLimited effect on rubber seals reduces premature failure risk.\u003c\/li\u003e\n  \u003cli\u003eSuitable for CV joints, U-joints and wheel bearings in many vehicles.\u003c\/li\u003e\n  \u003cli\u003ePackaged for easy grease-gun or hand-application during service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the 14-ounce cartridge fit into maintenance routines?\u003c\/h3\u003e\n\n\u003cp\u003eThe 14-ounce jar provides a convenient refill size for workshops and enthusiasts who service CV joints and related driveline components. It’s sized to fit standard grease guns and offers enough volume for multiple maintenance sessions without excessive storage bulk.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e14-ounce cartridge works with most grease guns or hand-apply methods.\u003c\/li\u003e\n  \u003cli\u003eGood balance between capacity and shelf\/storage convenience.\u003c\/li\u003e\n  \u003cli\u003eIdeal for routine CV joint service, off-road prep and fleet maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Red Line 80401 CV-2 is aimed at professional mechanics, automotive enthusiasts and fleet owners who need a reliable synthetic grease that handles heavy loads, extreme angles and wide temperature swings. If you service CV joints, U-joints or wheel bearings and prioritize long-lasting protection, seal compatibility and reduced maintenance intervals, this 14-ounce cartridge is a practical choice for routine and demanding drivetrain lubrication tasks.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Red Line CV-2 on both CV joints and wheel bearings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. CV-2 is formulated for CV joints, U-joints and many wheel bearing applications where extreme pressure lubrication is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this grease harm rubber CV boots or seals?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The formula is designed for minimal effect on common rubber seals, reducing risk of swelling or premature failure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Red Line","offers":[{"title":"Default Title","offer_id":48086881665182,"sku":"B0053O9FQS","price":58.36,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/red-line-cv2-front-packaging.jpg?v=1785908914"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/collections\/red-line-30504-bottle-front.jpg?v=1786192947","url":"https:\/\/northtrailauto.ca\/collections\/brand-red-line.oembed","provider":"North Trail Auto","version":"1.0","type":"link"}