STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer 8 oz for Gasoline Engines
STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer 8 oz for Gasoline Engines
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STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer 8 oz for Gasoline Engines

254 ratings
STA-BIL 360 Marine Ethanol Treatment and Fuel Stabilizer 8 oz for Gasoline EnginesSTA BIL 22239 360 Marine Ethanol Treatment and Fuel Stabilizer 8 oz
Pack SizeSingle

Key item features

  • Advanced Protection: Utilizes vapor technology to safeguard the engine and fuel system both above and below the fuel line, specifically formulated for marine environments.
  • Ethanol Defense: Prevents damage caused by ethanol-blended fuels in boats and small engines, effectively combating negative effects and corrosion.
  • Moisture Removal: Advanced formula actively removes moisture from the fuel system, preventing corrosion damage in water-based applications.
  • Fuel Preservation: Keeps gasoline fresh for up to a year during storage and prevents the buildup of gum and varnish.
  • Engine Performance: Cleans the fuel system to increase engine power and fuel efficiency, ensuring peak performance for all gasoline engines.
  • Versatile Application: Safe for use in all 2-cycle and 4-cycle gasoline engines, including boats, jet skis, and other nautical equipment.
  • Concentrated Treatment: An 8 oz bottle treats 40 gallons of gas, with a recommended dosage of 1 oz per 5 gallons.
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Specs

Product line, STA-BIL 360 MarineVehicle fitment type, UniversalVehicle type, CarRecommended use, Marine, ATV, Agriculture, Automotive, Dirt Bike, Fleet Vehicle, Lawn Mowers, Motorcycle, RV, Snowmobile, Truck, UTVBrand, STA-BILSize, 8 oz.

About this item

Product details

As America's #1 Ethanol Treatment, you can trust STA-BIL 360 Marine to keep your gasoline-powered engine running at peak performance, and is safe for use in all gasoline engines, including 2-cycle and 4-cycle. By preventing the buildup of unwanted gum and varnish, this product is recommended for use in your boat, jet ski, and other nautical gasoline-powered equipment. STA-BIL 360 Marine 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 Marine 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 directly to your boat it is best practice to add STA-BIL 360° Marine 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 ensure smooth sailing year-round!.

STA-BIL (22239) 360 Marine Ethanol Treatment and Fuel Stabilizer, 8 oz:
  • Vapor technology protects engine and fuel system above and below the fuel line
  • Helps prevent Ethanol fuel-related damage in boats and small engines
  • Advanced formula for engines used in water environments, to better remove the moisture
  • Helps prevent corrosion damage and removes water
  • Keeps fuel fresh during storage
  • Cleans system to increase engine power
  • Marine fuel with vapor technology comes in an 8 oz size
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Product line

STA-BIL 360 Marine

Vehicle fitment type

Universal

Vehicle type

Car

Recommended use

Marine, ATV, Agriculture, Automotive, Dirt Bike, Fleet Vehicle, Lawn Mowers, Motorcycle, RV, Snowmobile, Truck, UTV

Warranty

Warranty information

Satisfaction Guaranteed. If you are not satisfied with the results, mail sales receipt to us and the purchase price will be refunded.

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Customer ratings & reviews

4.8 out of 5 stars
stars
254 ratings131 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars90% (229)
  2. 4 stars6% (16)
  3. 3 stars1% (2)
  4. 2 stars1% (2)
  5. 1 star2% (5)

Reviews summary

Pros

  • : Effective for fuel stabilization and storage.
  • : Additive prevents starting issues during storage.
  • : The product delivers a premium formula while lowering overall cost.
  • : Formula mixes well and measures accurately.
  • : Suitable for use in outboard motors.

Neutral

  • : Additive stabilizes fuel but ethanol can gel and clog lines.
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Showing 1-3 of 131 reviews

Oct 19, 2026
Reviewer name: zzxx
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

absolutely essential product

I live in hurricane prone, Florida. therefore, I never know exactly when my lights are going to grow out and I need to store gas for long-term. I do this on a yearly basis in order for the gas to remain fresh and available when I need it. I use this stable product. it works perfectly and you cannot find it at a better price anywhere where

Helpful?2HSRJ3HTIHKX16645041
Jan 24, 2026
Reviewer name: Gary
Item details
Size: 8 oz.
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

The only problem is delivery! The poor people that deliver where delivering at 8:45 at night

Helpful?2HSRJ3HTIHKX16645041
Sep 5, 2026
Reviewer name: anonymous
Item details
Multipack quantity: 1
Sold byEISHONDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Driver put package in safe place and notification was almost instantly sent. Thx!

Helpful?2HSRJ3HTIHKX16645041
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was $15.99
$1.44/fl oz
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