About this item

• Product Overview

  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.

  See the product data sheet for full details.

  ---

  REDUCES MAINTENANCE

  • 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.

  Gasoline Stabilizer Fights Corrosion

  AMSOIL provides corrosion protection Sea Foam^* Motor Treatment can't match, helping maintain power and performance and keeping metal corrosion free, even when subjected to salt water.^X

  ^XBased on independent third-party testing of AMSOIL Gasoline Stabilizer obtained July 1, 2022, and Sea Foam Motor Treatment purchased June 30, 2022, in a modified NACE TM0172 using synthetic sea water per ASTM D665B.
  *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.

  ---

  HELPS EQUIPMENT START RELIABLY

  • 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

  AMSOIL Gasoline Stabilizer delivers 8X longer fuel stability than Sea Foam^® Motor Treatment in the triple-length gasoline oxidation stability test (ASTM D525), helping maintain startability and protect against the formation of varnish and gum.^Z

  	Sea Foam	AMSOIL
  Minutes	536	4,320

  ^ZBased on independent third-party testing of AMSOIL Gasoline Stabilizer obtained July 1, 2022 and Sea Foam Motor Treatment purchased June 30, 2022 in a triple-length gasoline oxidation stability test (ASTM D525) using test fuel containing no oxidation-stability-improving additives.
  *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.

  See the product data sheet for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 170 reviews

  Based on 170 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Great for vehicle seasonal storage
    By  DUSTIN,  a  Verified Buyer  from  New Mexico  on  May 12, 2026

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    I add this to the fuel in our Motorhome that sits parked about half of each year, with a full 55 gal tank. The end result is no issues whatsoever when we take it on trips! The AMSOIL Stabilizer keeps the fuel protected and road ready!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Fuel Care
    By  DAN,  a  Verified Buyer  from  American Canyon  on  March 18, 2026

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    Works great UTV's Ben setting over a year and started right and ran great, Stabilizer worked really good
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    I'm sure it works
    By  JAMES,  a  Verified Buyer  from  Canada  on  November 25, 2025

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    I use this in my gas cans and sxs for winter storage. Seems to work great.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Gas stabilizer
    By  SAM,  a  Verified Buyer  from  SC  on  November 23, 2025

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    Preserves gas fuel better than other products I have used. Used in conjunction with Performance Improver produces fuel quality and performance. Highly recommend!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    That time of the year
    By  STEWART,  a  Verified Buyer  from  Calgary  on  November 22, 2025

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    I have motorcycles and a car that must wait for spring. Therefore gas stabilizer is a must every fall. I used to use Sea Foam until I saw the lab report comparing Sea Foam to Amsoil gas stab. The Amsoil is so much superior I bought a case. Now I am set for years.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (2) NO (0)
  • 5 star rating
    Best we ever used
    By  BOB,  a  Verified Buyer  from  53559  on  November 21, 2025

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    We use this every fall in our air cooled VW's, Model "A"s and old motorcycles . Every spring not a single carburetor problem. With other brands we would have stuck needle valves on the carburetor floats.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (2) NO (0)
  • 4 star rating
    Not for your every day vehicle
    By  MICHAEL,  a  Verified Buyer  from  Fort Worth, TX  on  November 19, 2025

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    This product is not for your everyday vehicle. This is used when you want to store equipment. It keeps the gasoline fresh.
    Was this review helpful?

    YES (1) NO (1)
  • 5 star rating
    Great Product
    By  BILLY,  a  Verified Buyer  from  Indiana   on  November 19, 2025

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    Been using this product for a few years now works very well.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Gas Stabilizer
    By  ROD J.,  a  Verified Buyer  from  Vermilion  on  November 18, 2025

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    This stabilizer works great.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Winter storage safety factor
    By  STEVE,  a  Verified Buyer  from  New brunswick  on  November 18, 2025

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    With winter coming it is time to out away boats and vintage cars. A great stabilizer to reduce varnish buildup from oxidation. Engines startup right away the next spring
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)

• Highlights

  • Helps keep fuel fresh up to 12 months
  • Protects against varnish and gum buildup
  • Fights ethanol corrosion
  • Ideal for stored seasonal equipment such as snowmobiles, lawnmowers, motorcycles and boats
• Returns

  We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

• Payments

  We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

• Product Overview

  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.

  See the product data sheet for full details.

  ---

  REDUCES MAINTENANCE

  • 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.

  Gasoline Stabilizer Fights Corrosion

  AMSOIL provides corrosion protection Sea Foam^* Motor Treatment can't match, helping maintain power and performance and keeping metal corrosion free, even when subjected to salt water.^X

  ^XBased on independent third-party testing of AMSOIL Gasoline Stabilizer obtained July 1, 2022, and Sea Foam Motor Treatment purchased June 30, 2022, in a modified NACE TM0172 using synthetic sea water per ASTM D665B.
  *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.

  ---

  HELPS EQUIPMENT START RELIABLY

  • 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

  AMSOIL Gasoline Stabilizer delivers 8X longer fuel stability than Sea Foam^® Motor Treatment in the triple-length gasoline oxidation stability test (ASTM D525), helping maintain startability and protect against the formation of varnish and gum.^Z

  	Sea Foam	AMSOIL
  Minutes	536	4,320

  ^ZBased on independent third-party testing of AMSOIL Gasoline Stabilizer obtained July 1, 2022 and Sea Foam Motor Treatment purchased June 30, 2022 in a triple-length gasoline oxidation stability test (ASTM D525) using test fuel containing no oxidation-stability-improving additives.
  *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.

  See the product data sheet for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 170 reviews

  Based on 170 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Great for vehicle seasonal storage
    By  DUSTIN,  a  Verified Buyer  from  New Mexico  on  May 12, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    I add this to the fuel in our Motorhome that sits parked about half of each year, with a full 55 gal tank. The end result is no issues whatsoever when we take it on trips! The AMSOIL Stabilizer keeps the fuel protected and road ready!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Fuel Care
    By  DAN,  a  Verified Buyer  from  American Canyon  on  March 18, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Works great UTV's Ben setting over a year and started right and ran great, Stabilizer worked really good
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    I'm sure it works
    By  JAMES,  a  Verified Buyer  from  Canada  on  November 25, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    I use this in my gas cans and sxs for winter storage. Seems to work great.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Gas stabilizer
    By  SAM,  a  Verified Buyer  from  SC  on  November 23, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    Preserves gas fuel better than other products I have used. Used in conjunction with Performance Improver produces fuel quality and performance. Highly recommend!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    That time of the year
    By  STEWART,  a  Verified Buyer  from  Calgary  on  November 22, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    I have motorcycles and a car that must wait for spring. Therefore gas stabilizer is a must every fall. I used to use Sea Foam until I saw the lab report comparing Sea Foam to Amsoil gas stab. The Amsoil is so much superior I bought a case. Now I am set for years.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (2) NO (0)
  • 5 star rating
    Best we ever used
    By  BOB,  a  Verified Buyer  from  53559  on  November 21, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    We use this every fall in our air cooled VW's, Model "A"s and old motorcycles . Every spring not a single carburetor problem. With other brands we would have stuck needle valves on the carburetor floats.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (2) NO (0)
  • 4 star rating
    Not for your every day vehicle
    By  MICHAEL,  a  Verified Buyer  from  Fort Worth, TX  on  November 19, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    This product is not for your everyday vehicle. This is used when you want to store equipment. It keeps the gasoline fresh.
    Was this review helpful?

    YES (1) NO (1)
  • 5 star rating
    Great Product
    By  BILLY,  a  Verified Buyer  from  Indiana   on  November 19, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    Been using this product for a few years now works very well.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Gas Stabilizer
    By  ROD J.,  a  Verified Buyer  from  Vermilion  on  November 18, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    This stabilizer works great.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Winter storage safety factor
    By  STEVE,  a  Verified Buyer  from  New brunswick  on  November 18, 2025

    Open report issue form

    Describe the issue

    Cancel Submit
    With winter coming it is time to out away boats and vintage cars. A great stabilizer to reduce varnish buildup from oxidation. Engines startup right away the next spring
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)