{"product_id":"vp-racing-classic-gear-oil-gl-4-sae-80w-90-1-qt-mineral-gear-lube-for-vintage-manual-transmissions","title":"VP Racing Classic Gear Oil GL-4 SAE 80W-90, 1 Qt — Mineral Gear Lube for Vintage Manual Transmissions","description":"\u003cstrong\u003eVP Racing Classic Gear Oil GL-4 SAE 80W-90 (1 qt) is a mineral-based gear lubricant formulated for classic manual transmissions and transaxles that use yellow-metal components.\u003c\/strong\u003e\n\n\u003cp\u003eEngineered to protect the synchronizers, bushings and thrust washers common in older manual gearboxes, this GL-4-rated oil balances wear protection with compatibility for copper and brass parts. The SAE 80W-90 viscosity offers reliable film strength at operating temperature while still allowing smooth shifting when the gearbox is cold. Packaged in a one-quart bottle and made in the United States, VP Racing’s Classic GL-4 solution is aimed at restorers, vintage car owners and anyone who needs a lubricant that respects older gearbox metallurgy.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect classic synchronizers and yellow metals?\u003c\/h3\u003e\n\u003cp\u003eVP Racing Classic Gear Oil is formulated to avoid aggressive additives that can harm soft metals while still providing robust anti-wear performance. It meets API GL-4 specifications, meaning it includes the frictional characteristics appropriate for synchronizer engagement without causing brasses or bronzes to corrode or degrade.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGL-4 rating for correct friction characteristics with synchronizers\u003c\/li\u003e\n  \u003cli\u003eMineral-base formulation compatible with copper and brass components\u003c\/li\u003e\n  \u003cli\u003eAnti-wear additives that limit gear pitting and scuffing\u003c\/li\u003e\n  \u003cli\u003eStable film strength at typical manual-transmission temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill SAE 80W-90 work in my vintage car’s gearbox throughout the seasons?\u003c\/h3\u003e\n\u003cp\u003eSAE 80W-90 provides a dependable balance of flow at lower temperatures and protection at higher operating temperatures for many classic vehicles. While modern multigrade gear oils offer broader temperature performance, 80W-90 is a common and recommended grade for older gearboxes designed around that viscosity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGood hot-film protection during sustained driving\u003c\/li\u003e\n  \u003cli\u003eSufficient cold-pour characteristics for milder climates\u003c\/li\u003e\n  \u003cli\u003eConsistent viscosity for stable shifting and load-carrying\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much comes in the package and what are the logistics details?\u003c\/h3\u003e\n\u003cp\u003eThis product is sold in a one-quart container that’s convenient for do-it-yourself maintenance and topping off gearboxes. The product ships as a compact unit with straightforward dimensions and a light shipping weight, making storage and handling easy in a garage setting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantity: 1 quart (0.946 liters) per bottle\u003c\/li\u003e\n  \u003cli\u003ePackage dimensions: 11.5 x 3.25 x 3.25 inches\u003c\/li\u003e\n  \u003cli\u003ePackage weight: approximately 2.01 pounds\u003c\/li\u003e\n  \u003cli\u003eMade in the United States; part number 2703 for ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this oil in modern gearboxes or limited-slip differentials?\u003c\/h3\u003e\n\u003cp\u003eThis GL-4 formulation is tailored to manual transmissions and transaxles with yellow metals and synchronizers; it is not intended as a universal replacement for all modern gearboxes or for many limited-slip differentials that require specific friction modifiers. Check your vehicle manufacturer’s recommendations before substituting oils, especially where GL-5 or limited-slip additives are specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned specifically for GL-4 service applications\u003c\/li\u003e\n  \u003cli\u003eNot optimized for gearboxes requiring GL-5 extreme-pressure additives\u003c\/li\u003e\n  \u003cli\u003eNot formulated as a dedicated limited-slip differential oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? VP Racing Classic Gear Oil GL-4 SAE 80W-90 is aimed at classic car owners, vintage motorcycle enthusiasts and restoration professionals who need a gearbox lubricant that is compatible with copper\/brass synchronizers and other yellow-metal components. It’s a practical choice for routine maintenance, mechanical rebuilds, and anyone seeking to preserve the original shifting behavior and longevity of older manual transmissions. Always consult your vehicle’s service manual for recommended viscosity and API service categories 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 VP Racing Classic Gear Oil GL-4 SAE 80W-90 safe for synchronizers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It's GL-4 rated and formulated to be compatible with synchronizers and yellow-metal components used in many classic manual transmissions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much oil is in the bottle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The product comes in a one-quart (0.946 L) container suitable for topping off or servicing smaller gearboxes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"VP Racing","offers":[{"title":"Default Title","offer_id":48086986588318,"sku":"B07WZWJ9YD","price":33.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/vp-racing-gear-oil-front-label.jpg?v=1785912286","url":"https:\/\/northtrailauto.ca\/products\/vp-racing-classic-gear-oil-gl-4-sae-80w-90-1-qt-mineral-gear-lube-for-vintage-manual-transmissions","provider":"North Trail Auto","version":"1.0","type":"link"}