General AMSOIL News, Maintenance

Gas Stabilizer for Winter Storage – AMSOIL is Best

 September 10, 2021

By  Greg Vaughn

Gasoline Stabilizer

Keeps fuel from deteriorating during storage for up to 12 months, allowing easier startups. Resists the formation of varnish and gum to keep fuel systems and storage tanks clean. Effective in ethanol-blended fuel. Ideal for all two- and four-stroke engines, including motorcycles, snowmobiles, boats, ATVs, edgers, tillers, mowers, cars, trucks, snowblowers, chainsaws, generators and farm and construction equipment.


  • Helps reduce maintenance time and costs by preventing harmful deposits from forming in the tank and fuel system.
  • Helps eliminate the need to clean or replace carburetors after long-term storage.
  • Fights harmful corrosion to maintain fuel-system cleanliness and operation.
Gas Stabilizer

ABased upon independent testing of AMSOIL Gasoline Stabilizer obtained Nov. 8, 2018 and Sea Foam Motor Treatment purchased Oct. 25, 2018 in a modified NACE TM0172 using synthetic sea water per ASTM D665 part B.

Gasoline Stabilizer Fights Corrosion

Gasoline Stabilizer provides corrosion protection Sea Foam Motor Treatment* can’t match, helping maintain power and performance and keeping metal looking like new even when subjected to salt water.


  • Eliminates the need to drain fuel from equipment before long-term storage.
  • Offers peace of mind that equipment will not only start when it is needed, but will perform properly.

Gasoline Stabilizer Improves Stability

Gasoline Stabilizer provides fuel stability that Sea Foam Motor Treatment can’t match, helping maintain startability and protect against the formation of varnish and gum.

Gas Stabilizer

Based upon independent testing of AMSOIL Gasoline Stabilizer obtained Nov. 8, 2018 and Sea Foam Motor Treatment purchased Oct. 25, 2018 in the ASTM D525 using test fuel containing no oxidation-stability-improving additives.

See the product data sheet for full details.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

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Author: Greg Vaughn, President & CEO

Family Dealership established 1974
Vietnam War Veteran
Helicopter Mechanic, Military & Civilian
Civil Service, 1982- 2003


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  1. Great reviews for this product on Google < https://www.google.com/search?q=amsoil.com%3Agas+stabilizer > and on AMSOIL.com, like this one:

    I own 17 old cars and trucks and have experimented with many fuel stabilizers including Stabil and Seafoam. Gas here in CA goes bad quickly and I can't drive them all. Stabil simply attracts moisture to it and makes it combustible and provides 2-3 months of protection. Seafoam seems to do less for stabilization and more for fuel system cleaning. Then I saw the corrosion it promotes in the tests. The Amsoil stabilizer is cost effective and seems to actually prevent phase separation. 12 months is no joke. I've gone longer and no varnish smell in gas or problem cold starting a car that's been sitting. I give this Amsoil product the same trust as all the other auto fluids I use. Thank you Amsoil for doing your homework.

    Dan · Reviewed on amsoil.com

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