Preserve peak performance for your boat’s engine with STA-BIL 360 Marine Gasoline Ethanol Treatment and Fuel Stabilizer in a convenient 10 oz bottle. Built for gasoline-powered marine equipment, this ethanol treatment protects fuel systems from the unique challenges of ethanol-blended fuels, so you can rely on smooth starts, steady idling, and consistent power on every voyage.
Why STA-BIL 360 Marine stands out
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Marine-specific ethanol protection: Formulated to combat ethanol-related fuel degradation, varnish, and gum build-up that can clog carburetors and fuel injectors in boats, outboards, and marine generators.
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Oxygen sensor safe: Designed to be compatible with your boat’s sensor systems, helping maintain accurate readings and engine management without compromising performance.
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Easy dosing for maximum coverage: Each 1 oz dose treats up to 10 gallons of gasoline, so a 10 oz bottle can stabilize up to 100 gallons of fuel—great for seasonal storage or annual fuel planning.
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Reliable storage and performance: Keeps fuel fresh during long storage periods and helps ensure quick, dependable starts when you’re ready to head back out on the water.
What problems it solves
- Prevents fuel deterioration and phase separation in ethanol-laden gasoline, reducing the risk of bad starts and poor performance.
- Minimizes formation of varnish and gum that can foul fuel systems, helping sustain smooth idle and responsive acceleration.
- Protects critical fuel-system components, supporting longer engine life and fewer maintenance needs after season-long storage.
Who should use STA-BIL 360 Marine
- Boat owners with gasoline outboards, sterndrive, or inboard engines who store their boats seasonally.
- Marina fleets or seasonal generators that sit idle for extended periods between uses.
- Anyone seeking a proven, marine-focused solution to keep ethanol-blended fuels stable and ready to burn.
How to use
- Determine fuel volume and plan dosage: 1 oz treats 10 gallons of gasoline.
- Pour the appropriate amount of STA-BIL 360 Marine into the fuel tank before storage or before filling up for heavy motor use.
- Fill the tank to mix the stabilizer evenly, then run the engine for several minutes to circulate the treated fuel through the system.
- For seasonal storage, add the stabilizer when you fill the tank and run the engine to ensure the entire fuel line is treated.
Specifications at a glance
- Brand: STA-BIL
- Sub Brand: 360 Marine
- Engine Type: Gasoline
- Container Size: 10 oz bottle
- Amount of Fuel Treated: 10 gallons per 1 oz (implies up to 100 gallons per bottle)
With STA-BIL 360 Marine, you’re not just treating gasoline—you’re protecting your engine’s reliability on the water. This marine-grade ethanol treatment is a practical, ready-to-use solution designed for the realities of lake, river, and coastal boating, ensuring fuel stability and dependable performance when you need it most.
