{"product_id":"mercury-10w-30-4-stroke-marine-engine-oil-quart-fc-w-certified-mineral-base-for-outboards","title":"MERCURY 10W-30 4-Stroke Marine Engine Oil Quart — FC-W Certified, Mineral Base for Outboards","description":"\u003cp\u003e\u003cstrong\u003eMERCURY 10W-30 4-Stroke Mineral Marine Engine Oil (1 qt) is a mineral-based lubricant engineered to protect four-stroke outboards from wear and corrosion both on and off the water.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMarine engines face salt, humidity, temperature swings and intermittent operation that ordinary automotive oils aren't formulated to handle. This Mercury oil uses a mineral base with a marine-specific additive package to resist rust, reduce wear and maintain viscosity under load. It is FC-W and FC-W Catalyst Compatible certified and is produced to Mercury Marine original equipment specifications, making it suitable wherever a 10W-30 four-stroke marine oil is recommended.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect marine engines differently than car oil?\u003c\/h3\u003e\n\n\u003cp\u003eThe formulation contains corrosion inhibitors and detergents tuned for marine exposure, plus additives that support stability during the frequent on\/off cycles typical of boat use. Those tweaks reduce internal corrosion and help keep moving parts clean, which improves reliability over time.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCorrosion inhibitors to protect metal surfaces in humid or salty air\u003c\/li\u003e\n  \u003cli\u003eDetergents and dispersants to prevent deposit buildup\u003c\/li\u003e\n  \u003cli\u003eViscosity retention to maintain film strength under marine loads\u003c\/li\u003e\n  \u003cli\u003eMineral base tailored for four-stroke marine engine demands\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I use MERCURY 10W-30 instead of another viscosity?\u003c\/h3\u003e\n\n\u003cp\u003eUse this 10W-30 grade when your engine manufacturer specifies 10W-30 for the expected operating temperatures and conditions. It matches the performance needs of many four-stroke outboards and fits warranty requirements for engines calling for this viscosity.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFollow your engine owner’s manual viscosity recommendation\u003c\/li\u003e\n  \u003cli\u003eChoose 10W-30 for moderate temperature ranges and typical boating seasons\u003c\/li\u003e\n  \u003cli\u003eOpt for this product when FC-W certification is required\u003c\/li\u003e\n  \u003cli\u003eSuitable for Mercury and other brands that accept mineral 10W-30\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat certifications and manufacturer standards does this product meet?\u003c\/h3\u003e\n\n\u003cp\u003eThis oil exceeds marine industry expectations for four-stroke engine service and carries FC-W and FC-W Catalyst Compatible certifications. It is manufactured to Mercury Marine’s original equipment specifications, supporting warranty and performance claims when used as directed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFC-W certified for four-stroke marine use\u003c\/li\u003e\n  \u003cli\u003eFC-W Catalyst Compatible for catalyst-equipped engines\u003c\/li\u003e\n  \u003cli\u003eProduced to Mercury Marine OEM specifications\u003c\/li\u003e\n  \u003cli\u003eMeets manufacturer requirements where 10W-30 is specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this quart-sized bottle fit into routine maintenance?\u003c\/h3\u003e\n\n\u003cp\u003eThe 1-quart container is convenient for single oil changes on smaller four-stroke outboards, topping off oil between drains, or carrying aboard as a spare. Its size is easy to store in a toolbox or boat locker and reduces waste compared with larger, less portable containers.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne-quart bottle for single drain or top-off tasks\u003c\/li\u003e\n  \u003cli\u003eCompact for onboard storage and emergency spares\u003c\/li\u003e\n  \u003cli\u003eEasy to pour and measure for accurate fills\u003c\/li\u003e\n  \u003cli\u003eReduces product waste for infrequent use boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boaters and marine technicians who operate or service four-stroke outboard engines and need a reliable, OEM-grade mineral oil in 10W-30 viscosity. It’s ideal for owners who require FC-W certified lubrication, anglers and weekend boaters seeking corrosion protection and shops that stock Mercury-approved fluids for maintenance and warranty compliance.\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 MERCURY 10W-30 safe for all four-stroke outboards?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use it when your engine manual calls for 10W-30 mineral oil; it's FC-W certified and compatible with many four-stroke outboards.\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 engines with catalytic systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This product is FC-W Catalyst Compatible, suitable for engines requiring catalyst-safe lubricants.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MERCURY","offers":[{"title":"Default Title","offer_id":48084422000798,"sku":"B00HURPZDS","price":31.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mercury-10w30-quart-front-label.jpg?v=1785854809","url":"https:\/\/northtrailauto.ca\/products\/mercury-10w-30-4-stroke-marine-engine-oil-quart-fc-w-certified-mineral-base-for-outboards","provider":"North Trail Auto","version":"1.0","type":"link"}