Mercury – Quicksilver 10W-30 Full Synthetic Marine Engine Oil | 4-Stroke Series | Full Synthetic | 8M0175781

Overview

There’s a certain comfort that settles in when your engine sounds exactly the way it should. No hesitation, no roughness — just that smooth, steady hum that tells you the day’s going to be a good one. Whether you’re running out to your favorite fishing spot or easing back toward the dock with the sun dropping behind you, having the right oil in your engine makes all the difference. Quicksilver 10W-30 Full Synthetic Marine Engine Oil gives you that dependable feeling every time you turn the key. It’s built to protect your engine when conditions change and the water doesn’t always play nice.

Key Features

• Designed for non-catalyzed 4-stroke outboards, sterndrives, and inboards
• Full synthetic formula with industry-leading viscosity retention
• High levels of zinc and phosphorous (ZDDP) for exceptional wear protection
• Reduces deposit buildup and neutralizes harmful combustion byproducts
• Strong defense against rust during long periods between uses
• Compatible with mineral and synthetic-blend 10W-30 oils
• Upgrade safe and meets warranty requirements of multiple major brands
• One-gallon bottle for full oil changes or regular maintenance

Engine & Boat Compatibility

This Mercury Marine part supports:

• Non-catalyzed 4-stroke outboards from Mercury and other major manufacturers
• Sterndrive engines operating in mixed-use environments
• Inboards that take on long idle periods and heavy load cycles
• Boats of all styles: fishing boats, pontoons, bay boats, cruisers, runabouts, and sport boats
• Engines requiring a 10W-30 full synthetic oil that meets NMMA FC-W standards

Performance & Practical Benefits

Marine engines work harder than most of us notice. They push heavy loads, face constant throttle changes, and deal with heat that builds fast and lingers even after shutdown. This full synthetic formula is made specifically for that lifestyle.

You’ll feel the difference in how clean the engine runs — smoother starts, more consistent throttle response, and fewer signs of strain after long runs. The elevated anti-wear additives protect the most critical parts, especially cam surfaces and bearings that rely on stable lubrication. Because the oil retains its viscosity so well, it keeps the engine protected during everything from trolling to wide-open-throttle sprints.

Its corrosion resistance shines during layups and inconsistent use. If your boat sits between weekends or over the off-season, the formula helps guard internal parts from moisture, rust, and oxidation. That means fewer surprises and a lot more confidence when you fire up for the season’s first trip.

Why Buy OEM

When it comes to marine engines, guessing isn’t a strategy. OEM-grade oil ensures you’re getting a product tested for the exact demands your engine faces. While some aftermarket oils claim compatibility, they often fall short with lower corrosion resistance, weaker viscosity retention, or limited high-heat stability.

Quicksilver’s full synthetic oil is developed to Mercury Marine’s standards, meaning it’s engineered to fit the performance profile of modern marine engines. It’s reliable, predictable, and the kind of product you recommend to a friend without hesitation. Long-term upkeep becomes easier, and your engine gets what it needs without compromise.

FAQ

Q1: Which engines does this oil fit?

It fits all non-catalyzed 4-stroke outboards, sterndrives, and inboards requiring 10W-30 oil.

Q2: How is it better than aftermarket oils?

It offers higher ZDDP protection, stronger viscosity retention, and marine-specific corrosion defense.

Q3: How can I confirm this oil is right for my setup?

Check your owner’s manual for 10W-30 full synthetic compatibility and FC-W requirements.

Q4: Is this suitable for both freshwater and saltwater use?

Yes. It’s formulated to handle corrosion challenges from either environment.

Q5: Is installation straightforward?

As long as you can complete a normal oil change, using this oil is simple and direct.