{"product_id":"sierra-1894404-25w40-fcw-synthetic-blend-inboard-sterndrive-engine-oil-5-qt","title":"Sierra 1894404 25W-40 FC-W Synthetic Blend Inboard\/Sterndrive Engine Oil – 5 Qt.","description":"\u003ch2\u003eSierra 1894404 25W-40 FC-W Synthetic Blend Inboard\/Sterndrive Engine Oil – 5 Qt.\u003c\/h2\u003e\u003cp\u003eA 5-quart container of Sierra’s 25W-40 synthetic blend engine oil, purpose-formulated for the demands of sterndrive and inboard gasoline engines. Meeting \u003cstrong\u003eNMMA FC-W\u003c\/strong\u003e certification, this oil is blended from premium synthetic and mineral base stocks with a carefully engineered additive package designed to handle the sustained high-RPM loads, elevated temperatures, and corrosive marine environment that inboard and sterndrive engines operate in.\u003c\/p\u003e\u003cp\u003eThe synthetic blend base provides a stable viscosity film under thermal stress, while the corrosion inhibitor package protects internal engine components — cylinder walls, bearings, and valve train — from the accelerated oxidation and moisture exposure common in marine applications. Friction modifiers reduce wear during cold starts and extended high-load operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 1894404\u003c\/li\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine type:\u003c\/strong\u003e 4-cycle inboard and sterndrive (I\/O) gasoline engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 5 US quarts (~4.7 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Synthetic blend\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.5 kg (9.8 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e The 5-quart size is the most practical format for a single full oil change on most inboard and sterndrive gasoline engines, which typically require 4–5 quarts per service. It eliminates the need to open multiple smaller containers and reduces leftover oil. This is the go-to choice for the DIY boater doing their own seasonal service on a MerCruiser, Volvo Penta, or similar sterndrive. For top-ups or smaller-capacity engines, the \u003ca href=\"\/products\/sierra-1894402-25w40-fcw-synthetic-blend-i-o-oil-qt\"\u003eSierra 1894402 25W-40 FC-W I\/O Oil – Quart\u003c\/a\u003e is the right size. High-volume shop and fleet users should consider the \u003ca href=\"\/products\/sierra-94407-25w-40-fcw-synthetic-blend-i-o-engine-oil-55-gal-drum\"\u003eSierra 94407 25W-40 FC-W I\/O Oil – 55 Gal. Drum\u003c\/a\u003e for the best per-litre value. Always verify your engine manufacturer’s oil specification and capacity before servicing.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199652069412,"sku":"47-1894404","price":105.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-94404.jpg?v=1785611190","url":"https:\/\/marisolmarine.com\/products\/sierra-1894404-25w40-fcw-synthetic-blend-inboard-sterndrive-engine-oil-5-qt","provider":"Marisol Marine Company","version":"1.0","type":"link"}