{"product_id":"sierra-full-synthetic-sae-30-4-cycle-marine-engine-oil-qt","title":"Sierra Full Synthetic SAE 30 4-Cycle Marine Engine Oil – 1 Qt","description":"\u003ch2\u003eSierra Full Synthetic SAE 30 4-Cycle Marine Engine Oil – 1 Qt\u003c\/h2\u003e\n\u003cp\u003eEngineered specifically for the demands of marine engines, this full synthetic SAE 30 oil delivers superior protection across the full range of operating conditions — from cold morning startups to extended hours under load. The synthetic base oil and balanced additive system exceed FC-W (Four-Cycle Water-cooled) certification requirements, making it a step above conventional marine oils.\u003c\/p\u003e\n\u003cp\u003eCompatible with both gasoline and diesel inboard and sterndrive engines, this oil is a reliable choice for boaters who want maximum protection without compromise.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExceeds FC-W certification requirements for 4-cycle water-cooled marine engines\u003c\/li\u003e\n\u003cli\u003eFull synthetic formula provides superior protection during startup, operation, and storage\u003c\/li\u003e\n\u003cli\u003eReduces friction and wear for extended engine life\u003c\/li\u003e\n\u003cli\u003eHelps reduce oil consumption and supports better fuel economy\u003c\/li\u003e\n\u003cli\u003eCompatible with gasoline and diesel inboard and sterndrive engines\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 SAE 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Full Synthetic\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-Cycle (gasoline \u0026amp; diesel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Inboard \u0026amp; Sterndrive (I\/O)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e FC-W\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-94104-full-synthetic-sae-30-4-cycle-marine-engine-oil-5-quarts\"\u003eSierra Full Synthetic SAE 30 Marine Engine Oil – 5 Qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-25w-40-4-stroke-marine-engine-oil-1-quart\"\u003eSierra 25W-40 4-Stroke Marine Engine Oil – 1 Qt\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 Marine Engine Oil – 1 Qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-9420cat2-4-stroke-mineral-marine-outboard-engine-oil-10w-30-1-quart\"\u003eSierra 10W-30 Mineral Marine 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\u003eSAE 30 full synthetic is the right call for inboard and sterndrive engines that specify a straight-weight oil — particularly older MerCruiser and Volvo Penta applications where the OEM calls for SAE 30. If your engine manual specifies a multi-viscosity like 25W-40, check our \u003ca href=\"\/products\/sierra-25w-40-4-stroke-marine-engine-oil-1-quart\"\u003eSierra 25W-40\u003c\/a\u003e instead. The full synthetic formula is especially worthwhile if your boat sits for extended periods — it holds its protective film better than conventional oil during storage and resists moisture contamination. Best used for annual oil changes on freshwater or saltwater inboard\/sterndrive engines.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199659769892,"sku":"47-94102","price":26.49,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-94102.jpg?v=1785611245","url":"https:\/\/marisolmarine.com\/products\/sierra-full-synthetic-sae-30-4-cycle-marine-engine-oil-qt","provider":"Marisol Marine Company","version":"1.0","type":"link"}