STA-BIL In-Season Protection Fuel System Treatment and Fuel Injector Cleaner, Boost Mpg, Corrosion Protection, 8 fl oz (22288)
STA-BIL In-Season Protection Fuel System Treatment and Fuel Injector Cleaner, Boost Mpg, Corrosion Protection, 8 fl oz (22288)
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STA-BIL In-Season Protection Fuel System Treatment and Fuel Injector Cleaner, Boost Mpg, Corrosion Protection, 8 fl oz (22288)

273 ratings
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Key item features

  • Corrosion Prevention: STA-BIL 360 Protection prevents corrosion caused by ethanol-blended fuels and is effective in all gasoline types, including ethanol and non-ethanol blends.
  • Fuel System: This treatment cleans the fuel system, prevents the buildup of gum and varnish, and acts as a fuel injector cleaner.
  • Engine Performance: It increases engine power and fuel efficiency, ensuring gasoline-powered engines run at peak performance.
  • Versatile Application: Safe for use in all 2-cycle and 4-cycle gas-powered engines, including vehicles, motorcycles, lawn mowers, and generators.
  • Fuel Freshness: Keeps fuel fresh for up to 12 months, making it suitable for year-round usage at every fill-up.
  • Treatment Capacity: An 8 fl oz bottle treats 40 gallons of fuel, with a ratio of 1 oz treating 5 gallons of gas.
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Specs

Brand, STA-BILAutomotive additive type, Fuel Performance EnhanceVolume capacity, 8 galContainer type, BottleSize, 8 ozCompatible cars, Universal

About this item

Product details

STA-BIL 360 Protection 4 Fluid Ounces keeps your gasoline-powered engine running at peak performance. STA-BIL is safe for use in all 2-cycle and 4-cycle gas powered engines. By preventing the buildup of unwanted gum and varnish, this product is recommended for use in your vehicle, motorcycle, lawn mower, snow blower, boat, generator, and more. STA-BIL 360 Protection Ethanol Treatment & Fuel Stabilizer prevents corrosion caused by ethanol blended fuel. Effective in all gasoline blends, including ethanol and non-ethanol, this product helps increase engine power and fuel efficiency. STA-BIL 360° Protection, America's #1 Ethanol Treatment, is engineered to combat the negative effects of ethanol-blended fuels. This industry-leading formula prevents corrosion, cleans the fuel system, and prevents the buildup of unwanted gum and varnish; ensuring your equipment will be ready to go whenever you need it. 1oz treats 5 gallons of gas. If using with small engine equipment pour directly into your gas can. If adding to a vehicle it is best practice to add STA-BIL 360° Protection before adding fresh fuel at the pump. This product is designed to be added to the fuel as soon as you get it that way you know the fuel is fresh. This formula will also keep gas fresh for up to a year. Use throughout the season to make sure your engine runs top-notch year-round!
  • STA-BIL 360 Protection 8 Fluid Ounces.
  • STA-BIL 360 Protection Prevents Corrosion Caused by Ethanol Blended Fuels.
  • Treats 40 Gallons of Fuel. 
  • Increases Engine Power and Fuel Efficiency.
  • Effective In All Gasoline, Including Ethanol and Non-Ethanol. 
  • Engineered For Year-Round Usage - Use at Every Fill-Up. 
  • Keeps Fuel Fresh for Up To 12 Months.
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Specifications

Brand

STA-BIL

Automotive additive type

Fuel Performance Enhance

Volume capacity

8 gal

Container type

Bottle

Warranty

Warranty information

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Customer ratings & reviews

4.8 out of 5 stars
stars
273 ratings101 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars87% (238)
  2. 4 stars8% (23)
  3. 3 stars1% (4)
  4. 2 stars0% (1)
  5. 1 star3% (7)

Reviews summary

Pros

  • : Helps protect fuel systems in various tank levels.
  • : Offers long-term defense against ethanol-based fuels.
  • : Provides quicker throttle response.
  • : Prevents stale gas for months or a year in storage.

Neutral

  • : Formula reaches bottom and protects, but rust still forms.
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Showing 1-3 of 101 reviews

Jun 27, 2026
Reviewer name: Kathy
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Stabil

This item is just awesome. I put it in every gas tank in my lawnmower. You know with the ethanol ethanol comes up your carburetor this product works great my lawnmower runs great. I use it religiously and in the winter time I put the storage stuff in it. It's well worth the money and the price but I use a lot of it because I have 3 acres tomorrow.

Helpful?5XYT6V8C96EF54596022
Jun 22, 2026
Reviewer name: anonymous
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works great.

I used have dispose of unused gas for winter,now i use this to extend gas life and it works great.

Helpful?5XYT6V8C96EF54596022
Dec 8, 2025
Reviewer name: Walmart customer
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I've started using this in conjunction with a personal mixture of marvel mystery oil and Lucas fuel stabilizer. I can't say that. Maybe that's not Overkill for the application. But I generally only use it in something like a motorcycle or a vehicle that doesn't get used quite as often. Also good for generators and gas cans that stay stored for months at the time.

Helpful?5XYT6V8C96EF54596022
Current price is $7.8498.0 ¢/fl oz
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