Mercury – Full Synthetic Marine Engine Oil | 10W-30 4-Stroke Formula | Premium Synthetic | 8M0173224

Overview

When you spend enough time on the water, you learn quickly which products you can trust—and which ones you absolutely can’t gamble on. Mercury 10W-30 Full Synthetic Marine Engine Oil (8M0173224) is the kind of protection you reach for when you want every run, every start, and every long day offshore to feel steady and predictable. There’s a certain peace of mind that comes from knowing your engine is shielded by Mercury’s strongest oil formula. You can feel it in the quiet smoothness at idle, the clean power when you throttle up, and the confidence that comes with knowing you’re running the same level of protection Mercury builds into its engines.

This one-gallon bottle gives you the volume you need for routine oil changes on bigger four-stroke systems—exactly what boaters rely on for dependable, long-term performance.

Key Features

• Designed for non-catalyzed four-stroke outboards, sterndrives, and inboard engines
• Full synthetic formula with elevated detergents, dispersants, and anti-wear additives
• Highest viscosity retention of all Mercury 10W-30 full synthetic marine oils
• Enhanced levels of zinc and phosphorous (ZDDP) for superior wear and corrosion protection
• Multi-grade formula maintains stability across extreme temperatures
• Compatible with Mercury mineral and synthetic blend oils for seamless upgrading
• Produced to strict Mercury Marine OEM specifications

Engine & Boat Compatibility

Perfect for:

• Non-catalyzed Mercury FourStroke outboards (various horsepower ranges)
• Mercury sterndrive systems including MerCruiser engines
• Inboard engines that require 10W-30 full synthetic lubrication

Common uses include:

• Center consoles and offshore fishing boats
• Runabouts, cruisers, and sport boats
• Pontoon boats and family vessels
• Workboats and guide boats logging long hours

Performance & Practical Benefits

What separates this oil from the rest is how steady and predictable your engine feels, even when the water or weather decides to test you. Mercury’s full synthetic formulation holds its viscosity under heat, high RPM, and heavy load—so lubrication stays constant and dependable. That translates into quieter running, smoother throttle response, and reduced internal friction.

The enhanced protective additives fight sludge, varnish, and buildup, keeping your passages clean and your engine breathing freely. Elevated ZDDP levels form a strong, secure barrier on wear surfaces, helping protect camshafts, bearings, and other high-stress components. And because it’s optimized for marine use, it offers exceptional corrosion resistance in both salt and freshwater environments.

In short, it keeps your engine running tight, clean, and powerful—trip after trip.

Why Buy OEM

There’s a reason seasoned boaters stick with OEM Mercury Marine parts:

• Built specifically for Mercury engines—not an automotive blend repackaged for marine use
• Tested in real-world marine conditions, from long idle periods to wide-open throttle
• Consistent protection that extends engine life and lowers long-term maintenance costs
• Guaranteed compatibility with your Mercury lubrication system
• Backed by a brand that has engineered marine performance for decades

When reliability matters, going OEM isn’t just a preference—it’s the smartest decision on the water.

FAQ Section

Q1: Which engines does this oil fit?

It’s ideal for non-catalyzed Mercury four-stroke outboards, sterndrives, and inboards.

Q2: What makes it better than aftermarket oils?

Higher viscosity retention, stronger anti-wear chemistry, and marine-specific corrosion protection set it far apart.

Q3: How do I confirm this is the right oil for my engine?

Check your Mercury owner’s manual—if it calls for 10W-30 full synthetic, this is the OEM match.

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

Absolutely. It’s engineered to protect in both.

Q5: Is installation straightforward?

Yes—just replace your oil and filter following your manual’s instructions.