Mercury – Premium Plus 2-Stroke Marine Engine Oil | Synthetic Blend | 858027K01

Overview

When you’re heading out before sunrise and that engine roars to life, you want to know it’s protected, truly protected. That’s where Mercury Premium Plus 2-Stroke Marine Engine Oil comes in. Built for serious boaters who ask a lot from their engines, this oil delivers quiet strength and lasting reliability. You can feel it every time you accelerate, cruise, and throttle down — smooth, confident, and worry-free.

Key Features

• Designed for oil-injected, carbureted, or EFI 2-stroke Mercury engines
• Synthetic blend formula meets NMMA TC-W3 marine standards
• Provides outstanding wear and corrosion protection
• Reduces carbon buildup for cleaner combustion
• Maintains peak performance at high speeds and heavy loads
• 1-gallon bottle size — ideal for frequent boaters and larger engines

Engine & Boat Compatibility

• Suitable for Mercury and Mariner 2-stroke outboards
• Works with mid- to high-horsepower engines
• Compatible with oil-injected or premix systems
• Perfect for bass boats, center consoles, and personal watercraft

Performance & Practical Benefits

Mercury’s Premium Plus oil earns its keep where it matters most — under pressure. When you’re running hard at full throttle, this oil stays strong and stable, keeping parts cool and well-lubricated. You’ll notice how smooth the power feels, even after hours of running. That’s because the blend is designed to minimize carbon buildup and reduce friction, so your engine doesn’t have to fight itself.

The protection it provides against corrosion is second to none. Salt, humidity, and heat don’t stand a chance. Whether your boat lives on a trailer or in a slip, you can rest easy knowing the internals are guarded by Mercury’s most trusted formula. It’s not just about performance — it’s about longevity and that feeling of confidence every time you turn the key.

Why Buy OEM

Any boater who’s been burned by aftermarket oil will tell you: go OEM. Mercury’s engineers know every nut, bolt, and bearing inside that outboard. This Mercury Marine part was crafted for perfect compatibility, providing the protection your engine deserves. It’s tested to perform in the same conditions you face — long weekends, salty air, and unpredictable weather.

It might cost a little more up front, but it saves you plenty in the long run. Fewer breakdowns, fewer rebuilds, and way more peace of mind. With Premium Plus, you’re not taking chances — you’re choosing proven reliability.

FAQ Section

Q1: Which engines use Mercury Premium Plus 858027K01?

It’s ideal for mid- to high-horsepower Mercury 2-stroke outboards using oil-injected or premix systems.

Q2: How does it compare to aftermarket options?

Mercury’s OEM oil offers cleaner burn, stronger corrosion resistance, and superior lubrication under load.

Q3: How do I verify it’s the right one?

Check your manual for part number 858027K01 or TC-W3 oil recommendation.

Q4: Can it handle saltwater use?

 Yes, it’s built specifically for marine environments and resists corrosion in salt or freshwater.

Q5: Is it easy to add or replace?

Yes, the 1-gallon jug makes refilling simple and efficient for most owners.