{"product_id":"royal-purple-max-gear-75w-90-gear-oil-set-3-x-1-quart-bottles-gl-5-gl-4-synthetic","title":"Royal Purple Max Gear 75W-90 Gear Oil Set — 3 x 1-Quart Bottles, GL-5\/GL-4 Synthetic","description":"\u003cp\u003e\u003cstrong\u003eRoyal Purple Max Gear 75W-90 is a high-performance hypoid gear oil in a convenient three-quart set designed to protect heavily loaded differentials and manual transmissions while improving efficiency and longevity.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for demanding automotive, truck and marine applications that call for API GL-5 or GL-4 gear oils, this Max Gear formulation blends premium synthetic base oils with Royal Purple’s Synerlec additive package. The result is a lubricant engineered to lower operating temperatures, resist corrosion to soft yellow metals, and reduce friction — all while maintaining compatibility with synchronized transmissions and limited-slip differentials. Each kit contains three 1-quart (32-ounce) bottles, ideal for maintenance intervals or multi-vehicle servicing.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Max Gear protect heavily loaded gears?\u003c\/h3\u003e\n\u003cp\u003eMax Gear is formulated to create a durable film under extreme pressures to shield gear teeth and bearings from wear. Its additives help separate metal surfaces, reducing metal-to-metal contact during shock loads and continuous duty cycles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSynerlec additive package for persistent film strength\u003c\/li\u003e\n  \u003cli\u003eHigh-quality synthetic base oils for thermal stability\u003c\/li\u003e\n  \u003cli\u003eLow coefficient of friction to minimize wear\u003c\/li\u003e\n  \u003cli\u003eProven performance in severe-service conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil work with my differential, transmission, or marine lower unit?\u003c\/h3\u003e\n\u003cp\u003eYes — Max Gear is suitable for front and rear differentials, manual transmissions and lower gear units of marine engines that specify API GL-5 or GL-4 service. It also separates quickly from water, a useful trait for marine and off-road use where moisture intrusion can occur.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets GL-5\/GL-4 specifications where required\u003c\/li\u003e\n  \u003cli\u003eFast water separation protects lubricant film integrity\u003c\/li\u003e\n  \u003cli\u003eCompatible with synchronizers and limited-slip components\u003c\/li\u003e\n  \u003cli\u003eFormulated to meet warranty and OEM expectations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan Max Gear improve driveline efficiency and vehicle performance?\u003c\/h3\u003e\n\u003cp\u003eBy reducing internal drag and lowering friction, Max Gear helps gears run cooler and smoother, which can translate to more efficient power transfer. That reduction in parasitic loss can be particularly beneficial for trucks and 4x4s that experience heavy drivetrain loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces operating temperature for extended component life\u003c\/li\u003e\n  \u003cli\u003eFriction modifiers optimize power flow through the drivetrain\u003c\/li\u003e\n  \u003cli\u003eQuieter gear operation due to improved lubrication\u003c\/li\u003e\n  \u003cli\u003ePotential fuel-efficiency gains from reduced drivetrain drag\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance benefits come with a three-quart pack?\u003c\/h3\u003e\n\u003cp\u003eA case of three one-quart bottles offers flexibility for routine maintenance or for fleets and hobbyists servicing multiple vehicles. Smaller bottles are easier to store, measure and pour without waste, and the set covers several partial or complete gear oil changes depending on vehicle capacity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThree individual 1-quart bottles for convenient handling\u003c\/li\u003e\n  \u003cli\u003eIdeal for topping off or full service on many differentials\u003c\/li\u003e\n  \u003cli\u003eReduces the need to buy single large containers for small jobs\u003c\/li\u003e\n  \u003cli\u003eGood for technicians, DIYers and multi-vehicle owners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: Royal Purple Max Gear 75W-90 in a three-quart set is aimed at owners and technicians who maintain trucks, SUVs, off-road vehicles, manual-transmission cars and marine lower units that require API GL-5\/GL-4 gear oils. It's particularly useful for drivers seeking a robust synthetic-grade lubricant that improves gear protection and driveline efficiency without adding separate additives. Choose this kit if you value extended gear life, reduced operating temperatures and reliable corrosion protection for components made from soft yellow metals.\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 Royal Purple Max Gear 75W-90 safe for limited-slip differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Max Gear is formulated for limited-slip differentials and includes friction modifiers so no extra additive is required.\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 marine lower gear units?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is suitable for lower gear units that call for API GL-5 or GL-4 and separates rapidly from water.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Royal Purple","offers":[{"title":"Default Title","offer_id":55170123792727,"sku":"B074WC7XSD","price":92.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/royal-purple-max-gear-front-packaging_a7e25988-8da1-4482-9b71-7a6e258f91b2.jpg?v=1790423641","url":"https:\/\/britishgarage.co.uk\/products\/royal-purple-max-gear-75w-90-gear-oil-set-3-x-1-quart-bottles-gl-5-gl-4-synthetic","provider":"British Garage","version":"1.0","type":"link"}