{"product_id":"mercury-4-stroke-high-performance-oil-quart-8m0078013","title":"Mercury 4-Stroke High Performance Engine Oil 25W-50 | 1 Qt | 8M0078013","description":"\u003ch2\u003eMercury 4-Stroke High Performance Engine Oil 25W-50 | 1 Quart | Part 8M0078013\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0078013\u003cbr\u003e\n\u003cstrong\u003eFull Reference:\u003c\/strong\u003e 92-8M0078013\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003cbr\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e 4-Stroke High Performance Marine Engine Oil\u003cbr\u003e\n\u003cstrong\u003eViscosity:\u003c\/strong\u003e SAE 25W-50\u003cbr\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Synthetic blend\u003cbr\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 1 Quart (946 mL)\u003cbr\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e NMMA FC-W\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat It Does\u003c\/h2\u003e\n\u003cp\u003eThis is the OEM-specified engine oil for Mercury high-performance and supercharged 4-stroke outboard and sterndrive engines. The SAE 25W-50 viscosity grade is engineered for engines that operate at sustained high RPM and extreme thermal load — conditions where standard 25W-40 or 10W-30 marine oils cannot maintain adequate film strength. The synthetic-blend formula resists viscosity breakdown under heat, protects against wear and corrosion, and keeps engine internals clean over the service interval.\u003c\/p\u003e\n\n\u003cp\u003eThis is \u003cstrong\u003enot\u003c\/strong\u003e a general-purpose upgrade for standard Mercury FourStroke outboards. It is the factory-specified oil for Verado, Mercury Racing, and high-output MerCruiser applications. Using the wrong viscosity grade in either direction can affect engine protection and may affect warranty coverage.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSystem\u003c\/h2\u003e\n\u003cp\u003e4-stroke engine lubrication system. Used in the crankcase of applicable high-performance Mercury outboard and MerCruiser sterndrive engines. Change at the interval specified in your engine’s owner’s manual or service manual.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eAlways confirm the correct oil viscosity for your engine in the Mercury owner’s manual or service manual before ordering. The 25W-50 grade is not interchangeable with 25W-40 or 10W-30 specifications.\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercury Verado supercharged 4-stroke outboards (all displacements)\u003c\/li\u003e\n\u003cli\u003eMercury Racing 4-stroke outboards\u003c\/li\u003e\n\u003cli\u003eMercury FormulaRace engines\u003c\/li\u003e\n\u003cli\u003eMerCruiser 525 EFI, 600 SCi, 700 SCi, 850 SCi high-performance sterndrives\u003c\/li\u003e\n\u003cli\u003eMerCruiser 1350 and 1650 Racing engines\u003c\/li\u003e\n\u003cli\u003eAny Mercury or MerCruiser engine specifying SAE 25W-50 high-performance marine oil — confirm in your owner’s manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eViscosity:\u003c\/strong\u003e SAE 25W-50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Synthetic blend\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 1 Quart (946 mL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e NMMA FC-W (meets marine engine manufacturer warranty requirements)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Wax-element, spring-loaded valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cp\u003eCommonly ordered together for a complete high-performance engine oil service:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/merc-768\"\u003eMercury MerCruiser Quicksilver High Performance Oil Filter 858004K\u003c\/a\u003e — the correct high-performance oil filter for applicable engines\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-701\"\u003eMercury MerCruiser Quicksilver Oil Filter 822626Q15\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1194\"\u003eMercury MerCruiser Quicksilver Oil Filter 8M0116378\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/merc-1122\"\u003eMercury 4-Stroke Marine Engine Oil – 25W-40, 1L | 8M0078639\u003c\/a\u003e — standard FourStroke viscosity (not for Verado\/Racing)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1123\"\u003eMercury 4-Stroke Marine Engine Oil – 25W-40, 4L | 8M0078640\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1124\"\u003eMercury 4-Stroke Full Synthetic Marine Engine Oil – 25W-40, 1L | 8M0078641\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1125\"\u003eMercury 4-Stroke Synthetic Blend Engine Oil – 25W-40, 4L | 8M0078642\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eChange engine oil and filter every \u003cstrong\u003e100 hours or annually\u003c\/strong\u003e, whichever comes first — or per the interval specified in your engine’s owner’s manual. High-performance and supercharged engines operate under greater thermal stress than standard outboards and should not exceed the recommended change interval. Always replace the oil filter at every oil change.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the correct oil viscosity (25W-50) is specified for your engine in the owner’s manual before use\u003c\/li\u003e\n\u003cli\u003eReplace the oil filter at every oil change — use the filter specified for your engine model\u003c\/li\u003e\n\u003cli\u003eWarm the engine before draining to ensure full oil evacuation\u003c\/li\u003e\n\u003cli\u003eCheck the oil level after filling and again after the first run to confirm no leaks\u003c\/li\u003e\n\u003cli\u003eDispose of used oil responsibly — do not discharge into the water\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this oil in a standard Mercury FourStroke outboard?\u003c\/strong\u003e\u003cbr\u003e\nNo. Standard Mercury FourStroke outboards (non-Verado, non-Racing) typically specify 25W-40 or 10W-30. Using 25W-50 in an engine that calls for a lighter viscosity can affect oil flow at startup and is not recommended. Always use the viscosity specified in your owner’s manual.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same as Mercury’s standard 4-stroke marine oil?\u003c\/strong\u003e\u003cbr\u003e\nNo. The 25W-50 high-performance formula uses a different viscosity grade and additive package than the standard 25W-40 marine oil. They are not interchangeable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a specific oil filter with this oil?\u003c\/strong\u003e\u003cbr\u003e\nYes. Use the oil filter specified for your engine model. For most high-performance Mercury applications, the \u003ca href=\"\/products\/merc-768\"\u003eMercury High Performance Oil Filter 858004K\u003c\/a\u003e is the correct filter. Confirm by your engine model and serial number.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I mix this with another brand of 25W-50 marine oil?\u003c\/strong\u003e\u003cbr\u003e\nMixing oil brands is not recommended. If switching oils, drain the crankcase fully before refilling. For warranty-covered engines, use the OEM-specified Mercury oil.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e Routine oil changes on Mercury Verado supercharged outboards, Mercury Racing engines, and high-output MerCruiser sterndrives that specify SAE 25W-50. Order alongside the correct high-performance oil filter so the full service can be completed in one visit. At 1 quart per bottle, most Verado and high-performance MerCruiser applications require multiple quarts — confirm the crankcase capacity in your service manual before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrdering this oil for a standard FourStroke outboard\u003c\/strong\u003e — the most common mistake. “High performance” does not mean better for every engine. This 25W-50 grade is specifically for supercharged and racing applications. Standard Mercury FourStroke outboards use 25W-40 or 10W-30. Using the wrong viscosity can affect engine protection and warranty coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot ordering enough quarts\u003c\/strong\u003e — high-performance and supercharged engines have larger crankcase capacities than standard outboards. Check the service manual for your engine’s oil capacity before ordering — a single quart is rarely sufficient for a full oil change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsing the wrong oil filter\u003c\/strong\u003e — high-performance engines require the correct filter for their application. Confirm the filter part number for your engine model before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceeding the service interval\u003c\/strong\u003e — high-performance engines are harder on oil than standard outboards. Do not extend oil change intervals beyond the manufacturer’s specification.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563912757284,"sku":"8M0078013","price":31.41,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/add1ec9c-af70-4b9a-a133-e4b6955c3572.png?v=1773435994","url":"https:\/\/marisolmarine.com\/products\/mercury-4-stroke-high-performance-oil-quart-8m0078013","provider":"Marisol Marine Company","version":"1.0","type":"link"}