Mercury – 10W-30 4-Stroke Synthetic Blend Marine Engine Oil | Premium Engine Care | One Gallon | 8M0142146

Overview

If you spend your weekends on the water, you know there is nothing quite like the confidence that comes from a well-protected engine. Clean, dependable oil is one of those quiet heroes that keeps every outing smooth—whether you are idling out at sunrise or pushing toward a far-off reef. Quicksilver 10W-30 4-Stroke Synthetic Blend Marine Engine Oil 8M0142146 is the kind of oil boaters rely on when they want their engines to last season after season. It is engineered for the realities of the marine world: long hours, changing weather, high rpm runs, and constant exposure to water. And when you know your oil is doing its job, everything else on the water just feels better.

Key Features

• Formulated to reduce wear and protect internal engine components
• Synthetic blend design for exceptional reliability and strength
• Outstanding viscosity retention for high-temperature, high-output operation
• Helps guard against corrosion in harsh marine environments
• Suitable for all four-stroke marine engines
• SAE 10W-30 viscosity
• One-gallon bottle for convenient maintenance
• Mercury Marine part number 8M0142146

Engine & Boat Compatibility

• Recommended for all four-stroke outboards, including many Mercury models up to 150 horsepower
• Compatible with Mercury sterndrive and inboard systems requiring 10W-30
• Ideal for bass boats, center consoles, pontoons, runabouts, and family cruisers
• Works with a broad range of engines used for fishing, watersports, and weekend recreation

Performance & Practical Benefits

Good oil is one of the most important parts of long-term engine health, and this formula proves it every time you turn the key. It clings to moving parts with a steady, protective layer that feels tight and secure even after long periods of high rpm running. You will notice smoother idling, steady throttle response, and a reassuring consistency during hot summer days when engines often work their hardest.

What sets this oil apart is its ability to resist breakdown. The synthetic blend holds its viscosity longer, so it does not thin out under pressure. Its corrosion inhibitors form a durable shield inside the engine—something every boater appreciates when dealing with constant moisture, salt spray, and long off-season storage. Maintenance becomes simpler too. When you drain the old oil, you will see less shearing and contamination, a clear sign that your engine is getting the protection it needs.

Why Buy OEM

Choosing a genuine Mercury Marine oil is not just about convenience—it is about certainty. Aftermarket oils may claim compatibility, but they often lack the marine-specific testing Mercury requires. This oil is built to meet original equipment standards, which means it fits your engine’s needs perfectly from day one. It lasts longer, protects better, and gives you real value over time. When you rely on your boat for family trips, long fishing runs, or towing kids around on a tube, OEM protection simply makes more sense.

FAQ

Q1: Which engines does this oil fit?

It is suitable for all four-stroke marine engines, including many Mercury outboards, sterndrives, and inboards that call for 10W-30.

Q2: What sets this apart from aftermarket oil?

It is OEM-engineered, tested specifically for marine use, and built to outperform typical automotive-grade or generic marine oils.

Q3: How can I confirm it is correct for my engine?

Check your owner’s manual or look for the recommended oil weight on your engine’s service label. If it lists 10W-30, this is the right choice.

Q4: Can it be used in both saltwater and freshwater?

Yes. Its corrosion-resistant formula is designed for all environments.

Q5: Is it easy to use for routine maintenance?

Absolutely. The one-gallon bottle is convenient, and most boaters can complete an oil change with standard tools.