{"product_id":"yukon-gear-axle-3-qt-80w-90-gl-5-gear-oil-kit-with-4-oz-positraction-additive-conventional-limited-slip-ready","title":"Yukon Gear \u0026 Axle 3 Qt 80W-90 GL-5 Gear Oil Kit with 4 oz Positraction Additive — Conventional, Limited-Slip Ready","description":"\u003cp\u003e\u003cstrong\u003eYukon Gear \u0026amp; Axle 3 Quart 80W-90 conventional gear oil kit supplies three quarts of GL-5-rated oil plus a 4 oz bottle of Yukon Positraction additive to help condition limited-slip differentials and protect hypoid gears under load.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit bundles straightforward, conventional 80W-90 gear oil with a concentrated friction modifier so you get the base lubricant and the small dosing bottle needed for many posi-style differentials. It’s designed for DIY mechanics and professional techs who want a reliable, GL-5-quality oil for manual transmissions and differentials that require a friction-modified formula. The combination makes it easy to add the correct amount of additive without buying a separate full-size bottle.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and service points is this kit suited for?\u003c\/h3\u003e\n\u003cp\u003eThis 3-quart pack works well for many passenger cars, light trucks, Jeeps, and older 4x4s that take conventional 80W-90 gear oil and require or accept a friction modifier for limited-slip or posi differentials. Always cross-check your vehicle’s owner manual or service data for recommended viscosity and additive requirements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTypical applications: rear differentials, front axles, manual transmissions where 80W-90 GL-5 is specified\u003c\/li\u003e\n  \u003cli\u003eUseful for limited-slip differentials when a friction modifier is called for\u003c\/li\u003e\n  \u003cli\u003eConvenient quantities for single-axle service or topping off\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I apply the Positraction additive with the 80W-90 oil?\u003c\/h3\u003e\n\u003cp\u003eFollow the vehicle manufacturer’s prescribed dosage for friction modifiers; the included 4 oz Yukon Positraction bottle is sized for common ratios of oil to additive, but some differentials require only a small dose. Pour the additive into the differential housing after draining the old fluid and before refilling with the 80W-90 oil, then reinstall the fill plug and run the vehicle briefly to distribute the product.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDrain old gear oil fully before adding the additive\u003c\/li\u003e\n  \u003cli\u003eAdd the specified amount from the 4 oz bottle to the empty housing\u003c\/li\u003e\n  \u003cli\u003eRefill with three quarts of 80W-90; verify final level at the fill plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protective properties does 80W-90 GL-5 oil provide?\u003c\/h3\u003e\n\u003cp\u003eConventional 80W-90 GL-5 is formulated to protect hypoid and spiral-bevel gear sets operating under heavy loads and sliding contact. It offers film strength and extreme-pressure additives to reduce wear and scoring while maintaining proper viscosity across typical operating temperatures for many vehicles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtreme-pressure additives to guard against scuffing in hypoid gears\u003c\/li\u003e\n  \u003cli\u003eStable viscosity for consistent lubrication under load\u003c\/li\u003e\n  \u003cli\u003eCompatibility with metal surfaces commonly used in gearboxes and axles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I mix this conventional oil with synthetic gear oils or other brands?\u003c\/h3\u003e\n\u003cp\u003eMixing conventional 80W-90 with a synthetic gear oil is generally possible but may alter performance characteristics; consult your vehicle specs and the oil manufacturers’ recommendations before mixing. If your differential specifically requires a full-synthetic product or a particular additive chemistry, choose the appropriate oil instead of blending.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMix only if both products list compatible specifications (viscosity and GL rating)\u003c\/li\u003e\n  \u003cli\u003eWhen in doubt, replace with a single-product fill to ensure predictable performance\u003c\/li\u003e\n  \u003cli\u003eDo not over-dose friction modifier; follow recommended levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This Yukon Gear \u0026amp; Axle 3 qt 80W-90 kit is intended for vehicle owners, mechanics, and off-road enthusiasts who service differentials and transmissions that call for conventional GL-5 80W-90 oil and sometimes require a friction modifier for limited-slip operation. It’s a practical, workshop-friendly option for single-service jobs, fluid top-ups, or when you want a paired additive bottle sized for common posi installations. Always verify compatibility with your vehicle’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: How much additive should I use with a single differential fill?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Follow vehicle specs; many differentials use 1–4 ounces of friction modifier per housing. Use the Yukon 4 oz bottle to match your required dose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil GL-5 rated and suitable for hypoid gears?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the 80W-90 conventional oil meets GL-5-level protection for hypoid and spiral-bevel gear sets under high load.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":48080840065182,"sku":"B0078UBO8C","price":80.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/yukon-gear-axle-kit-front-pack_jpg.jpg?v=1785789808","url":"https:\/\/northtrailauto.ca\/products\/yukon-gear-axle-3-qt-80w-90-gl-5-gear-oil-kit-with-4-oz-positraction-additive-conventional-limited-slip-ready","provider":"North Trail Auto","version":"1.0","type":"link"}