Mercury – 10W-30 4-Stroke Oil Change Kit | Maintenance & Care | Marine-Grade Components | 8M0188357

Overview

There’s a certain kind of peace that comes from taking care of your engine yourself. You know the feeling — the boat’s on the trailer or tied gently at the dock, the sun’s dipping low, and you’re giving your outboard the kind of attention that keeps it running strong all season. An oil change isn’t glamorous, but it’s one of those rituals that keeps you connected to your engine and confident when you push away from the shoreline. With the Mercury Marine part 8M0188357 Oil Change Kit, you’ll have everything you need laid out in one place, making the job simple, clean, and reassuringly complete. It feels good knowing the same oil and filter Mercury designs for their engines is exactly what’s going back into yours.

Key Features

• Complete oil change kit for Mercury and Mariner one-hundred-fifty horsepower four-stroke outboards
• Includes six one-liter bottles of Mercury SAE ten-W-thirty synthetic blend four-stroke marine engine oil
• Premium Mercury oil filter engineered for marine lubrication systems
• Oil drain hose and easy-to-follow instructions included
• Formulated with advanced corrosion inhibitors for harsh marine environments
• Mercury Marine part number 8M0188357

Engine & Boat Compatibility

Designed for:

• Mercury and Mariner one-hundred-fifty horsepower four-stroke outboards

Perfect for:

• Bay boats and center consoles that see long days and variable conditions
• Freshwater fishing rigs that idle, troll, and sprint between spots
• Pontoon and family boats relying on dependable all-day operation
• Owners who prefer to perform their own routine maintenance with OEM components

Performance & Practical Benefits

A good oil change is like giving your engine a deep breath. The synthetic blend oil in this kit is built specifically for marine loads — long hours, hot summers, and the constant push against water resistance. It holds its viscosity even when the engine is working hard, keeping everything moving with that smooth, protective film you can trust.

You’ll notice how willingly the engine settles into a clean idle afterward, how steady it feels when you ease onto plane, and how confident it sounds at cruising speed. The filter is built to capture the fine contaminants that come from real-world use, helping your engine stay cleaner between services. And because the kit includes the drain hose and directions, the whole job feels organized and stress-free. It’s maintenance done right, using parts designed to handle life on the water.

Why Buy OEM

There are plenty of ways to cut corners on engine maintenance — but seasoned boaters know better. Mercury’s oils and filters are designed around the exact tolerances, heat loads, and lubrication needs of their four-stroke platforms. Using genuine components means your engine gets the protection it was engineered for, right down to the additive packages inside the oil.

OEM kits save time, prevent mismatched parts, and help your engine last longer. It’s a smart investment in performance, reliability, and the simple comfort of knowing everything fits and functions exactly the way Mercury intended.

FAQ

Q1: Which engines does the Oil Change Kit 8M0188357 fit?

It fits Mercury and Mariner one-hundred-fifty horsepower four-stroke outboards.

Q2: How is this better than using aftermarket oil and a generic filter?

Mercury’s oil and filters are engineered specifically for marine heat cycles, load conditions, and corrosion challenges.

Q3: How can I confirm this is the right kit for my outboard?

Match your horsepower and four-stroke classification, or check your owner’s manual for the part number.

Q4: Is the oil suitable for both freshwater and saltwater use?

Yes. Its corrosion inhibitors and marine-focused additive package protect in any environment.

Q5: Is the kit easy for a do-it-yourself oil change?

Absolutely. The included drain hose and instructions make it straightforward for most boat owners.