Mercury – Premium Plus 2-Stroke Marine Engine Oil | Synthetic Blend | 858026K01

Overview

There’s something reassuring about knowing your motor’s protected, no matter how long you’re out there. That’s the feeling you get with Mercury’s Premium Plus 2-Stroke Marine Engine Oil, confidence built into every drop. Whether you’re carving through a choppy inlet or easing into calm morning water, this oil keeps your outboard running smooth and strong. It’s not just about keeping the parts lubricated, it’s about knowing you can count on your engine every single time you fire it up.

Key Features

• Designed for oil-injected, carbureted, and EFI 2-stroke engines
• Synthetic blend formulation for high-performance protection
• Meets NMMA TC-W3 marine oil standards
• Reduces carbon deposits and keeps combustion chambers cleaner
• Guards against wear, rust, and corrosion
• Comes in a 32-ounce (1-quart) bottle, ideal for routine maintenance

Engine & Boat Compatibility

• Ideal for Mercury and Mariner mid- to high-horsepower 2-stroke outboards
• Suitable for oil-injected and premix systems
• Works well with personal watercraft, inflatables, and fishing boats
• Trusted for both freshwater and saltwater conditions

Performance & Practical Benefits

Mercury Premium Plus delivers more than smooth lubrication,  it gives your engine a calm, steady heartbeat. When you’re running long distances at high speed, that blend of synthetic and mineral oils keeps metal parts gliding without friction or heat buildup. The engine feels tighter, the response sharper, and the noise quieter.

Even after long weekends on the water, the inside of your motor stays remarkably clean. No sticky residue, no clogged plugs, just steady, predictable performance. The formula’s corrosion protection works overtime, especially in coastal air, where salt and moisture can eat through lesser oils. You’ll notice how easily the motor starts and how confidently it holds up when pushed.

Why Buy OEM

 You’ve heard it before, but it’s true, when you stick with genuine Mercury Marine parts, you’re investing in long-term reliability. This oil isn’t a generic mix in a pretty bottle; it’s built for your exact engine. It’s the same formulation Mercury’s engineers tested, refined, and trusted across thousands of hours of real-world boating.

Aftermarket oils might seem tempting, but cutting corners rarely pays off on the water. With Mercury Premium Plus, you get consistency, protection, and performance that just feel right. It’s peace of mind you can pour straight into your engine.

FAQ Section

Q1: Which Mercury engines or systems does this fit?

This oil fits all mid- to high-horsepower Mercury 2-stroke outboards that require TC-W3-certified lubricants.

Q2: What makes this different from aftermarket alternatives?

Mercury’s proprietary synthetic blend provides cleaner burn, superior corrosion resistance, and long-term protection in all conditions.

Q3: How do I confirm it’s right for my setup?

 Check your owner’s manual, if it calls for part number 858026K01 or Premium Plus 2-stroke oil, you’re covered.

Q4: Is it safe for saltwater use?

Yes. It’s engineered for both freshwater and saltwater operation.

Q5: Is it easy to use?

Yes, just follow your manual for oil-injection or premix ratios and you’ll be set for smooth running.