{"product_id":"ultra-1plus-gear-oil-sae-80w-90-api-gl-5-1-gal-heavy-duty-hypoid-protection-shear-stable","title":"ULTRA 1PLUS Gear Oil SAE 80W-90 API GL-5 — 1 Gal Heavy-Duty Hypoid Protection, Shear-Stable","description":"\u003cp\u003e\u003cstrong\u003eULTRA 1PLUS SAE 80W-90 Gear Oil API GL-5 (1 gallon) is a heavy-duty hypoid gear lubricant engineered to protect differentials, axles and manual transmissions under high loads and extreme temperatures.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis professional-grade gear oil combines high film strength with additives designed to lower wear, resist shear, and maintain stable viscosity across hot and cold operating conditions. It's formulated for vehicles that call for API GL-5 performance and 80W-90 viscosity — a common specification for passenger cars, light trucks, SUVs, and vans that require robust extreme-pressure protection in hypoid gears and axle sets. Below you’ll find practical answers to the most common buyer questions and a quick list of what this product delivers.\u003c\/p\u003e\n\n\u003ch3\u003eHow does ULTRA 1PLUS 80W-90 protect gears during heavy use?\u003c\/h3\u003e\n\n\u003cp\u003eIts advanced extreme-pressure and anti-wear additives form a resilient lubricating film on gear teeth, reducing metal-to-metal contact under high torque and shock loads. The formula is engineered to slow wear mechanisms like pitting and scuffing so gears retain smooth operation over longer intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAPI GL-5-rated additive package for hypoid gear protection\u003c\/li\u003e\n  \u003cli\u003eAnti-scuffing agents that lower friction and surface damage\u003c\/li\u003e\n  \u003cli\u003eReduces pitting, spalling, and chatter during heavy loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil perform in extremes of heat and cold?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the 80W-90 viscosity grade maintains reliable flow at low temperatures for cold starts while offering thermal stability at high operating temperatures to resist thinning and breakdown. The shear-stable base and rust\/oxidation inhibitors extend useful life and preserve protective film integrity across seasonal extremes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStays viscous enough for low-temperature lubrication\u003c\/li\u003e\n  \u003cli\u003eThermally stable to resist oxidation and viscosity loss\u003c\/li\u003e\n  \u003cli\u003eAnti-foam and anti-rust components for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and components is this gear oil suitable for?\u003c\/h3\u003e\n\n\u003cp\u003eUse ULTRA 1PLUS SAE 80W-90 where manufacturers specify API GL-5 or compatible GL-4\/GL-5 service and a manual transmission or differential that accepts 80W-90 fluid. It works well in hypoid differentials, solid axles, and many manual gearboxes in light vehicles and trucks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHypoid differentials in passenger cars and SUVs\u003c\/li\u003e\n  \u003cli\u003eAxles and final drives on light trucks and vans\u003c\/li\u003e\n  \u003cli\u003eManual transmissions that list 80W-90 or GL-5 compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this product handle long-term durability and maintenance?\u003c\/h3\u003e\n\n\u003cp\u003eThe formulation emphasizes shear stability and resistance to oxidation, rust, and varnish, helping the fluid retain protective properties between service intervals. That means fewer premature oil changes and sustained gear quietness and efficiency when used according to vehicle manufacturer recommendations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShear-resistant to maintain viscosity under mechanical stress\u003c\/li\u003e\n  \u003cli\u003eOxidation and rust inhibitors reduce sludge and corrosion\u003c\/li\u003e\n  \u003cli\u003eFoam control prevents aeration for consistent lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: If you need a dependable, workshop-grade gear oil for hypoid differentials, axles or manual transmissions that demand API GL-5 performance and an 80W-90 viscosity, this ULTRA 1PLUS one-gallon container delivers a professional solution. It's aimed at DIY mechanics, fleet operators, and service shops looking for heavy-duty protection, thermal resilience and long-lasting wear control for light vehicles and trucks.\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 ULTRA 1PLUS SAE 80W-90 compatible with GL-4 specifications?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It's API GL-5 rated and suitable where GL-4\/GL-5 compatible oils are specified, but always confirm your vehicle maker's recommendation.\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 differential oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Change intervals vary by vehicle and use; follow the manufacturer's schedule or inspect for contamination and metal particles regularly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ULTRA 1PLUS","offers":[{"title":"Default Title","offer_id":48079859056798,"sku":"B088X3W3D6","price":66.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ultra-1plus-front-label.jpg?v=1785773322","url":"https:\/\/northtrailauto.ca\/products\/ultra-1plus-gear-oil-sae-80w-90-api-gl-5-1-gal-heavy-duty-hypoid-protection-shear-stable","provider":"North Trail Auto","version":"1.0","type":"link"}