Quicksilver Quickstor fuel stabilizer & treatment 32 oz — protects gasoline engines, prevents corrosion

Quicksilver Quickstor Fuel Treatment and Stabilizer (32 oz) protects gasoline engines by preventing fuel breakdown, corrosion, gum and varnish during use and long-term storage.

Quickstor 8M0058682 is a concentrated fuel preservative designed for two- and four-stroke gasoline engines across marine, powersports and small-engine applications. Formulated to work with regular and ethanol-blended fuels, it helps maintain clean fuel lines, carburetors and injectors and is safe for engines equipped with catalytic converters. One ounce treats five gallons, making the 32 oz bottle suitable for multiple tanks or several seasonal maintenance sessions.

How does Quickstor stop fuel from degrading?

Quickstor contains stabilizing agents and corrosion inhibitors that slow oxidation and chemical breakdown of gasoline, including ethanol blends. By keeping volatile components intact and neutralizing acids, it reduces the formation of gummy residues that can clog filters and injectors.

• Prevents oxidation and phase separation in ethanol-blended fuels
• Neutralizes acids to limit corrosion inside tanks and lines
• Reduces formation of gum, varnish and sticky deposits
• One ounce treats five gallons for precise dosing

When should I use Quickstor for my boat or equipment?

Use Quickstor before long-term storage, seasonal layup or whenever fuel is expected to sit more than a few weeks. It’s also beneficial during active seasons to protect fuel systems in small engines that experience intermittent use.

• Add to fuel before winter storage or extended downtime
• Use during off-season storage for boats, mowers and generators
• Top up treatment when refilling small tanks or prepping equipment
• Safe for both carbureted and fuel-injected engines

Will Quickstor harm catalytic converters or engine components?

Quickstor is formulated to be safe for catalyzed engines and common fuel-system materials. When used at the recommended rate, it protects internal parts rather than causing deposits or premature wear.

• Compatible with catalyzed exhaust systems
• Safe for seals, hoses, carburetors and injectors when dosed correctly
• Reduces corrosion risk inside tanks and lines
• Suitable for marine and powersports applications

How much Quickstor do I need and what engines is it for?

One ounce of Quickstor treats five gallons of gasoline. The 32 oz container provides ample product for multiple treatments and is formulated for a wide range of gasoline engines, including two- and four-stroke designs.

• Dosage: 1 oz per 5 gallons of fuel
• Works in cars, trucks, motorcycles, ATVs and snowmobiles
• Also suitable for marine outboards, lawn mowers, chainsaws and trimmers
• Manufacturer part number: 8M0058682

Who is this for? Quicksilver Quickstor 32 oz is aimed at boat owners, powersports enthusiasts, landscapers and homeowners who store engines seasonally or want to prevent fuel-related problems from intermittent use. If you maintain outboard motors, generators, lawn equipment or recreational vehicles and prefer a professionally formulated product from a legacy marine brand, Quickstor provides a convenient, concentrated option to preserve fuel quality and protect fuel systems.