Mercury – Quickstor Fuel Treatment and Stabilizer | Fuel System Additive | Clean Storage Formula | 8M0058682

Overview

Anyone who’s winterized a boat or tucked it away for a few quiet months knows the uneasy feeling that comes with leaving fuel sitting in the tank. You want that peace of mind — the comfort of knowing your next start-up will be smooth and trouble-free. This Mercury Marine part helps provide exactly that. It keeps your fuel fresh, your system clean, and your boat ready for that first warm morning when you finally uncover it and head back out onto the water.

Key Features

• Designed to stabilize gasoline during long-term storage
• Protects both two-cycle and four-cycle marine engines
• Helps prevent oxidation in regular and ethanol-blended fuel
• One ounce treats five gallons of gasoline
• Blocks gum, varnish, and residue from settling in fuel lines and tanks
• Meets Mercury Marine part number 8M0058682 specifications

Engine & Boat Compatibility

• Works with all gasoline marine engines, including outboards, sterndrives, and inboards
• Compatible with carbureted and fuel-injected fuel systems
• Safe for catalyzed engines
• Also suitable for generators, lawn equipment, snowmobiles, and small engines stored for seasonal use
• Ideal for bass boats, pontoons, offshore rigs, runabouts, and any vessel that sees extended downtime

Performance & Practical Benefits

Anyone who has ever pulled a boat out of storage only to deal with rough idle or stubborn starting understands how quickly fuel can turn on you. With Quickstor, those problems fade into the background. The formula works through the entire system, keeping gasoline from breaking down and turning sticky while the boat sits unused. The result is a cleaner burn, smoother throttle response, and far fewer unwelcome surprises when you’re ready to hit the water again.

You’ll notice how much more predictable the engine feels after storage — the idle is steady, the power comes on smoothly, and the start-up feels confident instead of hesitant. The treatment also protects against moisture and ethanol-related issues, which can cause corrosion in fuel lines and tanks if left unchecked. It’s the kind of simple, practical protection that pays off every time you prepare your boat for the season ahead.

Why Buy OEM

Fuel stabilizers aren’t created equal, and marine engines are more sensitive to fuel quality than most people realize. A genuine Mercury Marine part is formulated with these engines specifically in mind. It’s made to protect components that see constant moisture, temperature swings, and vibration. Aftermarket blends may claim similar benefits, but they often lack the refined chemistry needed to keep marine fuel systems truly clean and stable.

Using OEM means you’re being smart — you’re preserving injectors, carburetors, tanks, and valves, all while avoiding costly future repairs. It’s the kind of advice you’d get from a seasoned boater at the marina: treat your fuel right, and your engine will reward you with trouble-free days on the water.

FAQ

Q1: Which engines can use Quickstor Fuel Treatment 8M0058682?

Any gasoline engine — marine or otherwise — including portable outboards, large sterndrives, and fuel-injected inboards.

Q2: What makes it different from other fuel stabilizers?

It’s formulated for marine use, offering stronger protection against oxidation, ethanol separation, and moisture.

Q3: How do I know if I need it?

If your boat, generator, or small engine will sit unused for more than a few weeks, Quickstor keeps the fuel stable and prevents internal buildup.

Q4: Can it be used in both saltwater and freshwater setups?

Yes — it protects the fuel system itself, regardless of where you run the engine.

Q5: Is it easy to use?

Very. Just measure one ounce per five gallons and add it before storing your boat.