{"product_id":"quicksilver-10w-40-marine-engine-oil-1-gallon-4-stroke-fc-w-compliant-nmma-rust-protection","title":"Quicksilver 10W-40 Marine Engine Oil 1 Gallon — 4-Stroke, FC-W Compliant, NMMA Rust Protection","description":"\u003cp\u003e\u003cstrong\u003eQuicksilver 10W-40 4-Stroke Marine Engine Oil (1 gallon) is a mineral-based lubricant formulated to protect and maintain four-stroke outboards, sterndrives, and inboard marine engines under marine operating conditions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBacked by the Quicksilver name — a supplier trusted across marine and powersports for over six decades — this 10W-40 FC-W compliant oil is made to meet or exceed marine manufacturers' warranty specifications. It preserves engine viscosity, resists varnish and sludge formation, and offers rust protection required for NMMA certification. The one-gallon bottle (part number 8M0148477) is ready for routine service intervals and on-board maintenance, helping keep marine engines operating smoothly in saltwater and freshwater environments.\u003c\/p\u003e\n\n\u003ch3\u003eWhat engines can I use this oil in?\u003c\/h3\u003e\n\u003cp\u003eThis 10W-40 mineral oil is intended for all four-stroke marine outboard motors as well as inboard and sterndrive engines that specify an FC-W or compatible marine oil. Always consult your engine owner or service manual for the manufacturer’s recommended viscosity and service category before changing oil. Quicksilver formulates this product to meet broad marine requirements and warranty specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for four-stroke outboards, sterndrives, and inboards\u003c\/li\u003e\n  \u003cli\u003eMeets FC-W and FC-W catalyst compatibility where required\u003c\/li\u003e\n  \u003cli\u003eDesigned to align with NMMA rust-protection standards\u003c\/li\u003e\n  \u003cli\u003eManufacturer part number: 8M0148477, one-gallon bottle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil protect engines during high-rpm or heavy-use boating?\u003c\/h3\u003e\n\u003cp\u003eQuicksilver 10W-40 is formulated to maintain protective viscosity under heat and stress, reducing metal-to-metal wear during sustained high-rpm operation. It also contains additives to limit varnish and sludge buildup, which helps preserve oil passages and valve train components over long intervals. Regular use supports reliable performance when engines are pushed hard on tow, trolling, or cruising runs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStable viscosity for high-temperature, high-rpm conditions\u003c\/li\u003e\n  \u003cli\u003eAdditive package minimizes varnish and sludge formation\u003c\/li\u003e\n  \u003cli\u003eHelps reduce piston and cam wear under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil help prevent corrosion and meet warranty requirements?\u003c\/h3\u003e\n\u003cp\u003eYes — the formulation exceeds the corrosion protection requirements needed for NMMA certification and is designed to meet or surpass marine manufacturers’ warranty criteria. Using an approved marine oil like this one supports warranty compliance when the engine maker specifies FC-W or similar categories. Still, keep records of oil changes and follow service schedules to remain within warranty terms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExceeds rust protection needed for NMMA certification\u003c\/li\u003e\n  \u003cli\u003eFormulated to satisfy marine OEM warranty recommendations\u003c\/li\u003e\n  \u003cli\u003eRecommended to retain service records for warranty compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store this one-gallon bottle?\u003c\/h3\u003e\n\u003cp\u003eThe bottle is sized for easy fueling and on-board storage. Change oil according to your engine’s manual and local marine conditions—more frequent service may be needed for heavy use or contaminated water. Store the sealed container in a cool, dry place away from direct sunlight and extreme temperatures to preserve additive effectiveness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFollow engine manufacturer’s change intervals and instructions\u003c\/li\u003e\n  \u003cli\u003eUse in clean funnels or oil-change kits to avoid contamination\u003c\/li\u003e\n  \u003cli\u003eStore sealed away from heat and direct sun to protect additives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Boat owners, professional technicians, and fleet operators who run four-stroke marine outboards, sterndrives, or inboards and need a reliable, OEM-aligned mineral oil will find this Quicksilver 10W-40 ideal. It’s suited for recreational boaters and commercial users who require an oil that maintains viscosity under load, offers proven rust and wear protection, and helps meet manufacturer warranty specifications. If your engine manual calls for an FC-W or marine 10W-40 mineral oil, this one-gallon Quicksilver option is a practical choice for routine service and on-the-water peace of mind.\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 oil compatible with FC-W specifications?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Quicksilver 10W-40 meets FC-W requirements and is formulated for marine warranty compliance.\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 saltwater environments?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It provides rust protection and corrosion resistance suitable for saltwater and freshwater use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":48080974676126,"sku":"B01N4ALMOA","price":75.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/quicksilver-10w40-front-label.jpg?v=1785793453","url":"https:\/\/northtrailauto.ca\/products\/quicksilver-10w-40-marine-engine-oil-1-gallon-4-stroke-fc-w-compliant-nmma-rust-protection","provider":"North Trail Auto","version":"1.0","type":"link"}