{"product_id":"quicksilver-85w-90-extreme-performance-gear-lube-1-gallon-high-strength-marine-racing-protection","title":"Quicksilver 85W-90 Extreme Performance Gear Lube - 1 Gallon, High-Strength Marine \u0026 Racing Protection","description":"\u003cb\u003eQuicksilver 85W-90 Extreme Performance Gear Lube is a high-strength, gallon-size gear oil formulated for racing and high-performance marine, powersports, and motorsports gear cases.\u003c\/b\u003e\n\n\u003cp\u003eThis premium 1-gallon lubricant delivers robust protection for outboard and sterndrive lower units and other high-stress gearboxes. Engineered and validated to Mercury Marine original equipment standards, this formulation emphasizes film strength, shear resistance and water tolerance so gears maintain torque transfer and resist accelerated wear in racing and demanding recreational use.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gear lube protect gears under racing conditions?\u003c\/h3\u003e\n\u003cp\u003eUnder high loads and elevated temperatures, gear surfaces face increased friction and risk of surface distress. The Quicksilver 85W-90 blends pressure additives and tackifiers that form a resilient lubricating film across teeth and bearings, helping preserve gear geometry and reduce metal-to-metal contact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePressure additives increase load-carrying capacity during shock and high torque events\u003c\/li\u003e\n  \u003cli\u003eTackifiers improve film adhesion so oil stays where it’s needed\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature stability resists viscosity breakdown at racing heat levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this be used if water gets into the gear housing?\u003c\/h3\u003e\n\u003cp\u003eMarine environments can expose gear oil to water intrusion from seals, splashes or condensation. This lubricant contains emulsifiers and dispersant technology that help maintain protection when minor water contamination occurs, supporting continued lubrication until service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced emulsifiers assist in separating and managing water within the lubricant\u003c\/li\u003e\n  \u003cli\u003eHelps sustain protective film rather than allowing rapid corrosion or rusting\u003c\/li\u003e\n  \u003cli\u003eDesigned for marine applications where occasional water exposure is possible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance schedule should I follow with this 1-gallon oil?\u003c\/h3\u003e\n\u003cp\u003eRoutine replacement prolongs gearbox life and prevents buildup of contaminants that reduce protection. For seasonal recreational use, plan to replace gear lube annually when winterizing or follow an interval of approximately every 100 operating hours for high-use or racing applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChange oil at least once per year during winterization\u003c\/li\u003e\n  \u003cli\u003eFor heavy or racing use, consider replacement every 100 hours\u003c\/li\u003e\n  \u003cli\u003eInspect seals and drain plugs when servicing to minimize future water ingress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich gearcases and vehicles are compatible with this oil?\u003c\/h3\u003e\n\u003cp\u003eThis 85W-90 formulation is intended for high-performance outboard and sterndrive gearcases and is also suitable for other powersports and motorsports gearboxes requiring an 85W-90 GL-grade lubricant. Confirm your manufacturer’s recommended viscosity and specs before use to ensure proper compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized for outboard and sterndrive racing lower units\u003c\/li\u003e\n  \u003cli\u003eAppropriate for high-performance gear cases in marine and powersports equipment\u003c\/li\u003e\n  \u003cli\u003eFormulated to meet or exceed Mercury Marine original equipment testing standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Quicksilver 85W-90 Extreme Performance Gear Lube is aimed at boat owners, racers, and powersports enthusiasts who demand durable protection for high-stress gear systems. It suits mechanics and DIYers servicing lower units or high-performance gearcases who want an OEM-developed product with proven film strength, water-handling capability and thermal stability. Choose this product if you need a gallon-sized supply for multiple services or frequent maintenance intervals and want the assurance of Mercury Marine research and testing behind the formula.\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 Quicksilver 85W-90 suitable for stern drives?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated specifically for outboard and sterndrive racing lower units and high-performance gearcases.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I change this gear lube?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Change at least once a year during winterization, or about every 100 operating hours for heavy or racing use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":48082506023070,"sku":"B07TTLNLYG","price":122.3,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/quicksilver-front-gallon-container_18360dde-dd8f-42dd-b079-ea79e1c51928.jpg?v=1785811413","url":"https:\/\/northtrailauto.ca\/products\/quicksilver-85w-90-extreme-performance-gear-lube-1-gallon-high-strength-marine-racing-protection","provider":"North Trail Auto","version":"1.0","type":"link"}