(12 pack) STA-BIL 360 Ethanol Treatment and Stabilizer  - Fuel System and Injector Cleaner | Great for Boats & Watercrafts, In-Season Cleaning & Protection 32 fl. oz. (22240)
(12 pack) STA-BIL 360 Ethanol Treatment and Stabilizer  - Fuel System and Injector Cleaner | Great for Boats & Watercrafts, In-Season Cleaning & Protection 32 fl. oz. (22240)
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(12 pack) STA-BIL 360 Ethanol Treatment and Stabilizer - Fuel System and Injector Cleaner | Great for Boats & Watercrafts, In-Season Cleaning & Protection 32 fl. oz. (22240)

Key item features

  • Helps prevent Ethanol fuel-related damage in gas powered engines
  • Advanced formula for engines used in water environments (boats & other watercrafts), to better remove the moisture
  • Helps prevent corrosion damage and helps remove water
  • Cleans fuel system
  • Increases engine power
  • Maximizes GPH
Current price is $299.8878.1 ¢/fl oz
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Columbus, 43215
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This item includes:

  • 12-pack of STA-BIL 360 Ethanol Treatment and Stabilizer - Fuel System and Injector Cleaner | Great for Boats & Watercrafts, In-Season Cleaning & Protection 32 fl. oz. (22240)
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Customer ratings & reviews

4.8 out of 5 stars
stars174 ratings119 reviews
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Reviews summary

Pros

  • : Prevents varnish buildup and keeps engines running.
  • : Offers affordable options compared to similar products.
  • : Simple to measure and mix with engine.
  • : Prevents corrosion and varnish buildup in fuel systems.
  • : Helps keep gas fresh for months.

Neutral

  • : Can be ergonomic, but prone to leakage.
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Showing 1-3 of 119 reviews

Dec 8, 2016
Highmaster2
5 out of 5 stars review

Verified Purchase

Not cheap, but definitely worth the money

For about 6 years now, I have used Marine Sta-Bil in my lawn equipment, boat, SeaDoos and gas powered generator. During that time, I've had zero issues with fuel systems in any of them. One example that sold me initially on Sta-Bil: I always left my generator gassed up and ready to run. However, if it was months or more before I used it again, starting was a problem and it would run roughly until newer gas was added. To try and alleviate this problem, when I used my generator again I simply ran it dry when finished. The next time we lost power, it would not start. Even though I ran it dry, there was gas left in the carburetor bowl that had turned to sludge and clogged the needle and seat. Using a flashlight I had to disassemble the carb and completely clean it out to get the generator to start. When I later refilled the tank, I used gas with Sta-Bil added to it at the "storage" concentration and ran it a while to be sure that that gas made it to the carburetor. The generator then sat for over a year and a half before the next storm bad enough to lose power. When I hooked up the generator, it started instantly and ran smoothly. Since then whenever I fill my 5 gallon gas cans that I keep for lawn equipment and the generator, I always add Sta-Bil. I also add Sta-Bil to my boat and SeaDoos at every fill-up. Since I use it in marine engines, I always spend a little extra and use the Marine version for the extra protection against the harmful effects of ethanol. Also, since I top off their tanks each fall with gas with Sta-Bil, my trimmer, blower, chain saw and lawn mowers start instantly every spring and run just fine.

Helpful?37STNJH6TH7Q15540122285
Sep 22, 2025
mark
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Ritght product for the job.

This is the right product for all my small engings. Most fuel still has some alcohol and need treating. So not to harm small engine components.

Helpful?37STNJH6TH7Q15540122285
Jan 27, 2026
John
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Works well to keep gasoline fresh and engines running without carburetor issues. Used this product for decades!

Helpful?37STNJH6TH7Q15540122285