{"product_id":"liqui-moly-marine-4t-10w-40-marine-motor-oil-4-l-fully-synthetic-corrosion-protection","title":"Liqui Moly Marine 4T 10W-40 Marine Motor Oil — 4 L, Fully Synthetic, Corrosion Protection","description":"\u003cp\u003e\u003cstrong\u003eLIQUI MOLY Marine 4T SAE 10W-40 is a fully synthetic, low-friction motor oil engineered to protect and clean four-stroke marine engines while resisting corrosion in saltwater environments.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned specifically for boats and other maritime applications, this 4-liter formulation combines modern base oils with advanced additives to deliver wear protection, fast oil penetration, and long-term stability. It meets the specifications of leading engine manufacturers and has been tested for use with turbochargers and catalytic converters, making it suitable for a wide range of gasoline and diesel four-stroke marine engines.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect engines in a marine environment?\u003c\/h3\u003e\n\u003cp\u003eThe formulation contains a high concentration of corrosion inhibitors and anti-wear additives tailored to the stresses of marine use, such as salt exposure, varying load cycles, and humid conditions. These components form protective films on metal surfaces and slow down oxidative breakdown, preserving internal engine parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh corrosion protection additives guard against saltwater-related corrosion.\u003c\/li\u003e\n  \u003cli\u003eAnti-wear chemistry reduces metal-to-metal contact under load.\u003c\/li\u003e\n  \u003cli\u003eStable viscosity at operating temperatures maintains lubrication across conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil keep my engine clean and extend service intervals?\u003c\/h3\u003e\n\u003cp\u003eMarine 4T SAE 10W-40 uses detergents and dispersants to suspend soot and combustion byproducts, helping to prevent deposits and sludge buildup. Its outstanding aging stability means the oil retains protective properties longer, which can support recommended service intervals when used according to the engine maker's guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetergent additives reduce lacquer and varnish formation.\u003c\/li\u003e\n  \u003cli\u003eDispersants keep particles suspended for efficient filtration or oil change removal.\u003c\/li\u003e\n  \u003cli\u003eResistance to viscosity breakdown helps preserve performance between changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it compatible with turbochargers and catalytic converters?\u003c\/h3\u003e\n\u003cp\u003eYes. This LIQUI MOLY formulation has been tested for use with turbocharged engines and catalytic converters, making it suitable for modern marine engines that include exhaust treatment systems. The oil’s additive balance minimizes ash and deposits that could impair aftertreatment devices.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTested for turbocharger stability and lubrication demands.\u003c\/li\u003e\n  \u003cli\u003eCompatible with catalytic converters to avoid premature fouling.\u003c\/li\u003e\n  \u003cli\u003eSuitable for both gasoline and diesel four-stroke engines where specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat operational benefits should boat owners expect on the water?\u003c\/h3\u003e\n\u003cp\u003eBoat owners can expect rapid oil penetration at startup, reliable protection under mixed load and speed conditions, and resistance to thermal and oxidative aging. These attributes contribute to smoother operation, reduced wear, and protection of critical engine components over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast oil circulation at startup improves immediate lubrication.\u003c\/li\u003e\n  \u003cli\u003eLow-friction design supports efficient power transfer and fuel economy.\u003c\/li\u003e\n  \u003cli\u003eLong-term stability reduces the risk of varnish and sludge during storage periods.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: LIQUI MOLY Marine 4T SAE 10W-40 is aimed at owners and technicians of four-stroke marine engines—both gasoline and diesel—seeking a fully synthetic oil optimized for maritime conditions. It’s appropriate for recreational boats, workboats, and any vessel where manufacturers recommend a 10W-40 grade and where turbochargers or catalytic converters are present. Always follow your engine maker’s service schedule and specifications when choosing and changing oil.\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: Can I use this oil in both gasoline and diesel marine engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. LIQUI MOLY Marine 4T SAE 10W-40 is formulated for use in both gasoline and diesel four-stroke marine engines when those engines specify this grade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil safe for engines with turbochargers and catalytic converters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The product has been tested for turbochargers and catalytic converters and is compatible when engine specifications allow 10W-40 fully synthetic oil.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Liqui Moly","offers":[{"title":"Default Title","offer_id":48083179995294,"sku":"B0858C4V11","price":59.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/liqui-moly-marine-4t-front-packaging.jpg?v=1785827920","url":"https:\/\/northtrailauto.ca\/products\/liqui-moly-marine-4t-10w-40-marine-motor-oil-4-l-fully-synthetic-corrosion-protection","provider":"North Trail Auto","version":"1.0","type":"link"}