{"product_id":"crc-85w90-gear-oil-1-gallon-api-gl-4-hypoid-yellow-metal-safe-anti-wear-anti-rust","title":"CRC 85W90 Gear Oil 1 Gallon — API\/GL-4 Hypoid, Yellow-Metal Safe, Anti-Wear\/Anti-Rust","description":"\u003cp\u003e\u003cstrong\u003eCRC Sta-Lube 85W90 API\/GL-4 is a multi-purpose hypoid gear oil formulated to protect gears and differentials across a wide temperature range while remaining safe for yellow metals.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for automotive, truck, and bus service where API\/GL-3 or GL-4 oils are specified, this 1-gallon hypoid lubricant blends low pour characteristics and high-temperature stability to keep gear trains running smoothly. Its anti-rust and extreme-pressure (EP) anti-wear additives help reduce metal-to-metal contact and corrosion, while the non-corrosive formulation protects copper, bronze, and other non-ferrous bearings and bushings often found in drivetrains.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil handle temperature extremes?\u003c\/h3\u003e\n\u003cp\u003eCRC Sta-Lube 85W90 balances low-temperature flow with thermal resilience so it mobilizes quickly at cold start and maintains film strength at elevated operating temperatures. That makes it suitable for environments with variable seasonal conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow pour point for better cold-weather circulation\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature stability to resist breakdown and maintain protection\u003c\/li\u003e\n  \u003cli\u003eStable viscosity control to support consistent gear tooth lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it harm yellow metals like brass or bronze in my equipment?\u003c\/h3\u003e\n\u003cp\u003eNo — this formulation is non-corrosive to copper, bronze, and other non-ferrous alloys. CRC specifically engineered the additive package to avoid attacking delicate bearings and bushings common in transmissions and differentials.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTested safe for yellow-metal components\u003c\/li\u003e\n  \u003cli\u003ePrevents corrosion that can lead to pitting or wear on alloys\u003c\/li\u003e\n  \u003cli\u003eSuitable for mixed-metal gearboxes and assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat applications is CRC Sta-Lube 85W90 best suited for?\u003c\/h3\u003e\n\u003cp\u003eThis gear oil is versatile for passenger cars, light and heavy trucks, and buses that call for API\/GL-3 or GL-4 gear lubes. It’s appropriate for standard transmissions, hypoid differentials, and other gear sets requiring EP protection without risk to non-ferrous parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard manual transmissions and hypoid differentials\u003c\/li\u003e\n  \u003cli\u003eAutomotive and commercial vehicle drivetrain components\u003c\/li\u003e\n  \u003cli\u003eSituations where yellow-metal compatibility is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the product protect gears from wear and corrosion?\u003c\/h3\u003e\n\u003cp\u003eThe oil contains both anti-wear and anti-rust additives plus extreme-pressure agents that form protective films on gear teeth and bearings. These chemistries reduce scuffing and corrosive attack, extending component life when used and changed per manufacturer intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEP additives reduce metal-to-metal contact under load\u003c\/li\u003e\n  \u003cli\u003eAnti-rust additives inhibit corrosion in wet or humid conditions\u003c\/li\u003e\n  \u003cli\u003eBalanced formulation for long-term gear surface protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: CRC Sta-Lube 85W90 GL-4 is aimed at mechanics, fleet managers, and DIY technicians who need a reliable, yellow-metal-safe hypoid gear oil in a convenient 1-gallon container. Choose this product when your vehicle or equipment specifies API\/GL-3 or GL-4 performance and you want dependable protection across broad temperature ranges without compromising non-ferrous components.\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 gear oil safe for copper and bronze components?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The formulation is non-corrosive to copper, bronze, and other non-ferrous alloys, protecting bearings and bushings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in both transmissions and differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s suitable for standard transmissions and hypoid differentials requiring API\/GL-3 or GL-4 viscosity and protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CRC","offers":[{"title":"Default Title","offer_id":48084143931550,"sku":"B000M8RYMC","price":85.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/crc-sta-lube-front-gallon.jpg?v=1785847315","url":"https:\/\/northtrailauto.ca\/products\/crc-85w90-gear-oil-1-gallon-api-gl-4-hypoid-yellow-metal-safe-anti-wear-anti-rust","provider":"North Trail Auto","version":"1.0","type":"link"}