{"product_id":"sierra-25w40-fcw-catalyst-compatible-4-stroke-marine-engine-oil-qt","title":"Sierra 25W-40 FC-W Catalyst Compatible 4-Stroke Marine Engine Oil – 1 Qt","description":"\u003ch2\u003eSierra 25W-40 FC-W Catalyst Compatible 4-Stroke Marine Engine Oil – 1 Qt\u003c\/h2\u003e\n\u003cp\u003eKeep your inboard or sterndrive engine properly protected with an oil that meets NMMA FC-W Catalyst Compatible certification. This 25W-40 formula is engineered for modern four-stroke marine engines — whether or not they're equipped with an emission catalyst system — and delivers the wear protection, corrosion resistance, and thermal stability needed for a full season on the water.\u003c\/p\u003e\n\u003cp\u003eThe 1-quart size is ideal for topping up between oil changes, keeping a spare aboard, or completing a partial service where you don't need a full multi-quart fill.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNMMA FC-W Catalyst Compatible — safe for engines with or without emission catalyst systems\u003c\/li\u003e\n\u003cli\u003eIndustry-leading wear protection and deposit control for long engine life\u003c\/li\u003e\n\u003cli\u003eEnhanced detergent and dispersant properties prevent sludge formation\u003c\/li\u003e\n\u003cli\u003eMinimizes internal engine corrosion in freshwater and saltwater environments\u003c\/li\u003e\n\u003cli\u003eReduces engine friction for improved efficiency\u003c\/li\u003e\n\u003cli\u003ePremium base stocks resist thermal and oxidative breakdown under sustained load\u003c\/li\u003e\n\u003cli\u003eHighly shear-stable viscosity prevents excessive thinning at operating temperature\u003c\/li\u003e\n\u003cli\u003eAdvanced ZDDP anti-wear additive technology protects against phosphorus depletion and extends catalyst life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eViscosity:\u003c\/strong\u003e 25W-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e NMMA FC-W Catalyst Compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 1 Quart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4-Stroke (gasoline inboard \u0026amp; sterndrive)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Inboard \u0026amp; Sterndrive engines with or without catalyst systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-25w40-fcw-catalyst-compatible-4-stroke-marine-engine-oil-5-qt\"\u003eSierra 25W-40 FC-W Catalyst Compatible Marine Engine Oil – 5 Qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-25w40-fcw-catalyst-compatible-4-stroke-marine-engine-oil-55-gal-drum\"\u003eSierra 25W-40 FC-W Catalyst Compatible Marine Engine Oil – 55 Gal Drum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-synthetic-blend-4-stroke-marine-engine-oil-25w40-fc-w-1-qt-9440cat2\"\u003eSierra Synthetic Blend 25W-40 FC-W Marine Engine Oil – 1 Qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-synthetic-blend-10w30-fc-w-4-stroke-outboard-engine-oil-1-qt-9421cat2\"\u003eSierra Synthetic Blend 10W-30 FC-W Outboard Engine Oil – 1 Qt\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe 1-quart size is best suited for topping up oil levels between scheduled changes, or as a spare to keep aboard in case you need to add oil mid-season. If you're doing a full oil change on a single inboard or sterndrive engine, the \u003ca href=\"\/products\/sierra-25w40-fcw-catalyst-compatible-4-stroke-marine-engine-oil-5-qt\"\u003e5-quart jug\u003c\/a\u003e is the more practical and economical choice — most MerCruiser and Volvo Penta engines require 4–6 quarts per service. The FC-W Catalyst Compatible designation is critical for newer sterndrive engines equipped with catalytic converters; using a non-compatible oil in these engines can shorten catalyst life. Check your engine owner’s manual to confirm the correct oil specification before purchasing.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199659638820,"sku":"47-9400CAT2","price":24.69,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-9400CAT2.jpg?v=1785611242","url":"https:\/\/marisolmarine.com\/products\/sierra-25w40-fcw-catalyst-compatible-4-stroke-marine-engine-oil-qt","provider":"Marisol Marine Company","version":"1.0","type":"link"}