{"product_id":"sierra-9420cat7-4-stroke-mineral-marine-outboard-engine-oil-10w-30-55-gal-drum","title":"Sierra 9420CAT7 4-Stroke Mineral Marine Outboard Engine Oil, 10W-30, 55-Gallon Drum","description":"\u003ch2\u003eSierra 9420CAT7 4-Stroke Mineral Marine Engine Oil, 10W-30 – 55-Gallon Drum\u003c\/h2\u003e\u003cp\u003ePurpose-built for marine 4-stroke outboard engines, Sierra 9420CAT7 is a premium mineral-base 10W-30 engine oil formulated to meet or exceed the lubrication requirements of Mercury, Yamaha, Johnson-Evinrude, Suzuki, and Honda outboards. The 55-gallon drum format is designed for marinas, service shops, and commercial operators who need a reliable, high-volume supply of quality engine oil on hand.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine-specific formulation\u003c\/strong\u003e — engineered to the demands of 4-stroke outboard engines, not repurposed automotive oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-wear additives\u003c\/strong\u003e — reduce friction and protect engine internals under sustained load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion protection\u003c\/strong\u003e — guards against moisture and salt exposure in the marine environment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSludge control\u003c\/strong\u003e — keeps engine internals cleaner for better long-term efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-temperature viscosity\u003c\/strong\u003e — supports reliable cold-weather starting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad OEM compatibility\u003c\/strong\u003e — meets API SJ, CF-2, and CH-4 service classifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eViscosity: SAE 10W-30\u003c\/li\u003e\n\u003cli\u003eBase stock: Mineral\u003c\/li\u003e\n\u003cli\u003eAPI service: SJ, CF-2, CH-4\u003c\/li\u003e\n\u003cli\u003eVolume: 55 US gallons (208 L)\u003c\/li\u003e\n\u003cli\u003ePart number: 9420CAT7 | SKU: 47-9420CAT7\u003c\/li\u003e\n\u003cli\u003eCompatible engines: Mercury, Yamaha, Johnson-Evinrude, Suzuki, Honda 4-stroke outboards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use Case\u003c\/h3\u003e\u003cp\u003eThe 55-gallon drum is the right format for \u003cstrong\u003emarina service departments, mobile marine mechanics, and commercial operators\u003c\/strong\u003e running regular oil change programs across a fleet of 4-stroke outboards. Buying in drum quantity significantly reduces cost-per-service compared to case or gallon packaging, and eliminates the logistics of frequent reordering during peak season.\u003c\/p\u003e\u003cp\u003eFor smaller-volume needs, this oil is also available by the gallon and by the quart — see the \u003ca href=\"\/products\/sierra-9420cat3-4-stroke-mineral-forumulation-marine-outboard-engine-oil-10w-30-gal\"\u003eSierra 9420CAT3 10W-30, 1-Gallon\u003c\/a\u003e and the \u003ca href=\"\/products\/sierra-9420cat2-4-stroke-mineral-forumulation-marine-outboard-engine-oil-10w-30-qt\"\u003eSierra 9420CAT2 10W-30, 1-Quart\u003c\/a\u003e. For a synthetic blend upgrade with extended drain interval performance, see the \u003ca href=\"\/products\/sierra-synthetic-blend-10w30-fc-w-4-stroke-outboard-engine-oil-1-qt-9421cat2\"\u003eSierra 9421CAT2 Synthetic Blend 10W-30\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eBest use case is marina shops and commercial operators running high-volume oil change programs on 4-stroke outboard fleets. The drum format offers the strongest cost-per-litre value in the Sierra 10W-30 line and is the practical choice for any operation doing more than 20–30 oil changes per season. Recommend confirming OEM oil specification with the customer — while this oil meets API SJ\/CF-2\/CH-4, some manufacturers (particularly Yamaha and Mercury) recommend their own branded oils or FC-W certified formulations for warranty compliance. For customers who want FC-W certification, redirect to the \u003ca href=\"\/products\/sierra-synthetic-blend-10w30-fc-w-4-stroke-outboard-engine-oil-1-qt-9421cat2\"\u003eSierra 9421CAT2 Synthetic Blend 10W-30 (FC-W)\u003c\/a\u003e instead.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199660195876,"sku":"47-9420CAT7","price":2854.09,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-9420CAT2_1d56a192-c019-4da0-a795-d7c96635da5e.jpg?v=1785611252","url":"https:\/\/marisolmarine.com\/products\/sierra-9420cat7-4-stroke-mineral-marine-outboard-engine-oil-10w-30-55-gal-drum","provider":"Marisol Marine Company","version":"1.0","type":"link"}