Mercury – Quicksilver Full Synthetic Marine Engine Oil | 4-Stroke Series | Full Synthetic | 8M0175780

Overview

Any boater who spends long days on open water knows the quiet confidence that comes from an engine that just feels right. It starts clean, runs smooth, and never makes you second-guess your next run across the bay. That kind of trust doesn’t happen by accident — it comes from choosing the right protection. Quicksilver 10W-30 Full Synthetic Marine Engine Oil gives that assurance every time you turn the key. Whether you’re cruising inland lakes or pushing through chop miles offshore, you’ll know your engine has the support it needs.

Key Features

• Designed for 4-stroke outboard, sterndrive, and inboard marine engines
• Full synthetic formula for high-stress marine environments
• Delivers industry-leading viscosity retention among 10W-30 marine oils
• High levels of zinc and phosphorous (ZDDP) for outstanding wear protection
• Neutralizes harmful combustion byproducts to reduce deposits
• Provides strong rust and corrosion defense during intermittent use
• Safe upgrade from mineral or synthetic-blend oils
• One-quart bottle (32 oz.) for precise top-offs and service

Engine & Boat Compatibility

This Mercury Marine part is ideally suited for:

• All non-catalyzed 4-stroke outboards
• Inboard engines exposed to long idle periods and high-load conditions
• Sterndrives operated in both freshwater and saltwater
• Fishing boats, pontoons, cruisers, runabouts, and workboats
• Engines that require 10W-30 oil meeting NMMA FC-W standards

Performance & Practical Benefits

Marine engines live a tougher life than their automotive cousins — constant load, fluctuating throttle, and conditions that can turn unpredictable fast. This full synthetic formula is built for that exact reality. It holds its viscosity through long running hours, keeping the oil film strong so the engine feels tight, steady, and responsive.

Because it resists oxidation, you’ll notice fewer deposits and less varnish on internal surfaces. That means smoother operation, cleaner startups, and better long-term performance. Elevated ZDDP levels protect critical parts from wear, especially cam surfaces and bearings that need reliable lubrication under pressure.

It also stands strong during layups. If your boat sits for weeks at a time, this oil’s rust-blocking additives help protect exposed metal surfaces, giving you a smoother, cleaner start when you return to the water. It’s the kind of low-maintenance durability every boater appreciates.

Why Buy OEM

There’s a big difference between “works” and “works right.” OEM-level marine oil is engineered specifically for tight marine tolerances, high-heat loading, and the unique stresses of boat use. Cheaper oils may perform fine on paper, but they often break down faster, leave more deposits, or lack the marine-specific corrosion inhibitors your engine relies on.

This Quicksilver synthetic oil is made to Mercury Marine’s standards, meaning it’s built to fit, protect, and perform the first time and every time after. If you want long-term reliability without guesswork, OEM is simply the more practical choice.

FAQ

Q1: Which engines does this oil fit?

It’s designed for all non-catalyzed 4-stroke marine outboards, sterndrive engines, and inboards requiring 10W-30.

Q2: What sets this apart from aftermarket oils?

Higher ZDDP levels, better viscosity retention, and marine-specific corrosion protection make it stand out.

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

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

Q4: Can I use this in both freshwater and saltwater environments?

Absolutely — it’s formulated to fight corrosion in either setting.

Q5: Is installation straightforward?

Yes. If you can perform a standard oil change, you can use this oil without trouble.