Mercury – Quicksilver 10W-30 4-Stroke Marine Engine Oil, 1 Quart | Marine Engine Oil | Standard Finish | 8M0078616

Overview

Any boater who spends real time on the water knows how much comfort comes from turning the key and hearing an engine settle into a smooth, confident idle. It is a small moment, but it sets the tone for the whole day — whether you are easing toward the channel marker or heading out with a cooler full of bait and big hopes. Quicksilver 10W-30 4-Stroke Marine Engine Oil, part number 8M0078616, is one of the unsung heroes behind that dependable start. It gives your engine the steady, protective foundation it needs so you can focus on the ride, not the risk.

Key Features

• Designed for use in four-stroke marine outboards, inboards, and sterndrive engines

• Formulated to help prevent corrosion and excessive wear in harsh marine environments

• Strong shear strength and reliable viscosity retention under high-rpm conditions

• Ten weight thirty viscosity

• Thirty-two ounce bottle

• Mercury Marine part number 8M0078616

• Certified FC-W and FC-W Catalyst Compatible

Engine & Boat Compatibility

• Compatible with most Mercury four-stroke outboard horsepower ranges

• Works with Mercury sterndrives and inboards requiring 10W-30 engine oil

• Suitable for many engines from other major marine brands

• Commonly used in pontoons, bass boats, runabouts, center consoles, bay boats, and small cruisers

Performance & Practical Benefits

You feel the difference in the way the engine warms up — smooth, steady, without that strained edge that makes you second-guess your trip. This Quicksilver blend keeps internal components cushioned with a tight, protective film, helping minimize friction even when you run hard for long distances. The viscosity stays consistent, allowing the engine to respond cleanly when you throttle up or settle back into idle.

Corrosion resistance is where this oil really earns its keep. Marine engines live in a world full of moisture, salt spray, temperature swings, and long periods of storage. Without the right oil, those conditions start to wear down components faster than most boaters realize. This formulation helps build a protective layer that keeps everything inside cleaner and more stable, extending the life of your engine and reducing maintenance surprises. It is practical, proven protection — the kind that supports smooth performance trip after trip.

Why Buy OEM

Genuine Mercury Marine parts are engineered for the way marine engines live — not the conditions cars and trucks experience. Mercury tests its oils under the same strain and stress the engines themselves are built for. That means more consistent performance, longer life, and protection that truly matches the equipment. Aftermarket oils may claim compatibility, but they rarely meet the same standards or handle marine elements as well. Choosing OEM is simply the smart move: fewer worries, fewer repairs, and a better-running engine in every season.

FAQ

Q1: Which Mercury engines does Quicksilver 10W-30 Marine Engine Oil fit?
It fits most Mercury four-stroke outboards, inboards, and sterndrives that require ten weight thirty oil.

Q2: What makes this oil different from aftermarket alternatives?
It is engineered for marine heat, moisture, and extended high-rpm use, offering stronger wear and corrosion protection.

Q3: How do I know if this is the correct oil for my setup?
Check your owner’s manual. If it specifies ten weight thirty oil for four-stroke lubrication, this is the proper match.

Q4: Can this be used in both saltwater and freshwater environments?
Yes, it is formulated for reliable performance in either setting.

Q5: Is installation straightforward for most boat owners?
Absolutely. If you can perform a basic oil change, you will find this oil easy to handle and pour.