Mercury 4-Stroke High Performance Oil Quart 8M0078013
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Mercury 4-Stroke High Performance Engine Oil – Quart – 8M0078013
Protect high-output marine engines with Mercury 4-Stroke High Performance Engine Oil 8M0078013. This genuine Mercury OEM SAE 25W-50 synthetic-blend marine engine oil is specifically engineered for high-performance Mercury outboards and MerCruiser sterndrive engines operating under extreme conditions.
Designed for engines that run at high RPM and heavy loads, this advanced marine formula maintains viscosity and resists oil breakdown while providing excellent wear protection and corrosion resistance. It helps keep internal engine components clean while preventing sludge and varnish buildup during demanding operation.
Key Features
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Genuine Mercury Marine / Mercury Racing OEM engine oil
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SAE 25W-50 synthetic blend formula
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Designed for high-performance and high-RPM marine engines
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Maintains viscosity under extreme heat and engine loads
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Helps prevent varnish buildup and sludge formation
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Provides excellent wear and corrosion protection
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NMMA FC-W certified marine engine oil
Part Details
OEM Part Number: 8M0078013
Mercury Reference Number: 92-8M0078013
Product Type: High-performance marine engine oil
Oil Type: Synthetic blend
Viscosity: SAE 25W-50
Container Size: 1 Quart (946 ml)
Compatible Mercury & MerCruiser Engines
Recommended for high-output Mercury and MerCruiser 4-stroke engines, including:
Mercury Racing & Performance Outboards
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Mercury Verado supercharged outboards
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Mercury Racing 4-stroke outboards
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Mercury FormulaRace engines
MerCruiser High-Performance Sterndrive Engines
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MerCruiser 525 EFI
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MerCruiser 600 SCi
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MerCruiser 700 SCi
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MerCruiser 850 SCi
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MerCruiser 1350 / 1650 Racing engines
This oil is designed for performance applications where 25W-50 oil is specified.
Function
High-performance marine engines operate under extreme loads and temperatures. This oil is engineered to maintain protective lubrication and viscosity stability in those conditions.
Using Mercury High Performance oil helps:
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Protect internal components at high RPM and heavy loads
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Maintain oil pressure and lubrication stability
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Reduce engine wear during extreme operation
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Protect against corrosion in marine environments
Important Compatibility Note
Always confirm the recommended oil viscosity in your engine owner’s manual. This oil is designed for engines requiring SAE 25W-50 high-performance marine oil and should not be used in engines specifying different viscosities.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.