We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy
Home
All Categories
Automotive
Oils & Fluids
Gas Stabilizers

10 Best Gas Stabilizers 2025 in the United States

#1

Winner

9.8 score

STA-BIL Storage Fuel Stabilizer - Guaranteed To Keep Fuel Fresh Fuel Up To Two Years - Effective In All Gasoline Including All Ethanol Blended Fuels - For Quick, Easy Starts, 4 fl. oz. (22205) , Red

STA-BIL Storage Fuel Stabilizer - Guaranteed To Keep Fuel Fresh Fuel Up To Two Years - Effective In All Gasoline Including All Ethanol Blended Fuels - For Quick, Easy Starts, 4 fl. oz. (22205) , Red

STA-BIL

9.8 score

Check price

The STA-BIL Storage Fuel Stabilizer is designed to keep gasoline fresh for up to two years, making it ideal for seasonal equipment or vehicles that sit unused for long periods. It works with all types of gasoline, including ethanol blends, providing versatility and reliability for most fuel types. One of its key benefits is preventing gum and varnish buildup, helping engines run smoothly and avoiding costly maintenance. The product is simple to use—just add the recommended amount to the fuel tank, eliminating the need to drain gas before storage and simplifying preparation.

Rating
9.8
Chosen by1,281
Stabilization Duration
Compatibility
Additional Benefits

Most important from
32760 reviews

Stabilization Duration
Keeps fuel fresh for up to two years, effectively preventing gum and varnish buildup that can harm engines.
Compatibility
Works reliably across small and large engines, meeting even some manufacturers' warranty requirements for storage.
Additional Benefits
Ensures quick and smooth engine starts after long storage periods, eliminating common worries about stale fuel.
Ease of Use
Simple and straightforward to use—just add to the fuel tank without any complicated preparation or draining.
#2
9.6 score

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons - Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons - Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment

STAR BRITE

9.6 score

Check price

The STAR BRITE Star Tron Enzyme Fuel Treatment is a versatile gas stabilizer that works with a wide range of vehicles and gas-powered tools, including passenger cars, ATVs, motorcycles, and marine equipment. One of its standout features is its ability to stabilize fuel for up to 2 years, which is impressive for vehicles or equipment that sit idle for long periods. Additionally, it helps rejuvenate old fuel and prevent ethanol-related issues like poor performance and reduced fuel economy.

Rating
9.6
Concentration and Dosage
Additional Benefits
Ease of Use

Most important from
3811 reviews

Concentration and Dosage
A bargain as a few ounces treat an entire tank, unlike the multiple whole cans of expensive octane boosters.
Additional Benefits
This works even better than the much more expensive Octane Boosters I've tried.
Ease of Use
Husband uses this all the time.

Top 10 Best Gas Stabilizers 2025 in the United States

#1

Winner

9.8 score

Slide 1Slide 2Slide 3Slide 4Slide 5

STA-BIL

STA-BIL Storage Fuel Stabilizer - Guaranteed To Keep Fuel Fresh Fuel Up To Two Years - Effective In All Gasoline Including All Ethanol Blended Fuels - For Quick, Easy Starts, 4 fl. oz. (22205) , Red

Stabilization Duration: up to 24 months
Compatibility: all gasoline including Ethanol blends
Concentration and Dosage: 4 fl. oz. per small tank
Additional Benefits: Prevents gum, varnish; easy starts
Ease of Use: Add to tank; no draining needed

Check price

Chosen by 1281 this week

#2

9.6 score

Slide 1Slide 2Slide 3Slide 4Slide 5

STAR BRITE

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons - Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment

Stabilization Duration: up to 2 years
Compatibility: cars, ATVs, motorcycles, marine equipment
Additional Benefits: rejuvenate old fuel, improve fuel economy
Ease of Use: added to fuel tank easily

Check price

#3

9.4 score

Slide 1Slide 2Slide 3Slide 4Slide 5

STA-BIL

STA-BIL 22241 360° Marine - 10 oz.

Check price

20% OFF
#4

9.2 score

Slide 1Slide 2Slide 3Slide 4Slide 5

No-Spill

No-Spill 1405 2-1/2-Gallon Poly Gas Can & STA-BIL Storage Fuel Stabilizer, 8 fl. oz. (22208), Red

Stabilization Duration: up to 24 months
Compatibility: all gasoline types, ethanol blends
Concentration and Dosage: 8 fl. oz.
Additional Benefits: quick starts, thumb button control
Ease of Use: user-friendly

Check price

#5

8.9 score

Slide 1Slide 2Slide 3Slide 4Slide 5

STA-BIL

STA-BIL 360 Protection Ethanol Treatment & Fuel Stabilizer - Full Fuel System Cleaner - Fuel Injector Cleaner - Increases Fuel Mileage - Protects Fuel System - Treats 160 Gallons - 32 Fl. Oz. (22275), Amber

Check price

26% OFF

Related Products

Up to 31% off

#6

8.7 score

Slide 1Slide 2Slide 3Slide 4Slide 5

STAR BRITE

STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 32 OZ (14332)

Check price

17% OFF
#7

8.4 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Sea Foam

Sea Foam Truck & SUV Motor Treatment Fuel & Oil Additive, ST20, 20 oz, Pack of 12

Check price

#8

8.1 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Sta-Bil

Fuel Stabilizer, 1 Gallon

Check price

17% OFF
#9

7.8 score

Slide 1

Gold Eagle

STA-BIL FUEL STABILIZER (4 OZ), Manufacturer: GOLD EAGLE, Manufacturer Part Number: 22204-AD, Stock Photo - Actual parts

Check price

#10

7.5 score

Slide 1

Lucas Oil

Lucas Oil 10576 Safeguard Ethanol Fuel Conditioner with Stabilizers - 16 Ounce

Check price

28% OFF
How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

headphones-stars

Buying Guide for the Best Gas Stabilizers

Choosing the right gas stabilizer is crucial for maintaining the performance and longevity of your engine, whether it's for a car, lawnmower, boat, or any other gasoline-powered equipment. Gas stabilizers prevent fuel from deteriorating, which can lead to engine problems and costly repairs. When selecting a gas stabilizer, consider the following key specifications to ensure you pick the best fit for your needs.
Stabilization DurationStabilization duration refers to how long the stabilizer can keep the fuel fresh. This is important because fuel can degrade over time, leading to gum and varnish build-up in the engine. Stabilizers typically offer protection ranging from a few months to a couple of years. If you plan to store your equipment for a short period, a stabilizer with a shorter duration may suffice. However, for long-term storage, opt for a stabilizer that offers protection for at least a year or more.
CompatibilityCompatibility indicates whether the stabilizer can be used with different types of gasoline, such as ethanol-blended fuels or non-ethanol fuels. This is important because using the wrong stabilizer can lead to ineffective protection or even damage. Check the product label to ensure it is compatible with the type of fuel you use. If you use ethanol-blended fuel, look for a stabilizer specifically designed to handle ethanol-related issues.
Concentration and DosageConcentration and dosage refer to the amount of stabilizer needed per gallon of fuel. This is important for cost-effectiveness and ease of use. Higher concentration stabilizers require less product per gallon, making them more economical and easier to measure. Consider how much fuel you typically store and choose a stabilizer that offers a convenient dosage for your needs. If you store large quantities of fuel, a highly concentrated stabilizer may be more practical.
Additional BenefitsSome gas stabilizers offer additional benefits such as cleaning the fuel system, preventing corrosion, or improving engine performance. These features can be important if you want to maintain your engine in top condition. Evaluate your specific needs and consider whether these extra benefits are necessary for your situation. For example, if you have an older engine, a stabilizer with cleaning properties might be beneficial.
Ease of UseEase of use refers to how simple it is to measure and add the stabilizer to your fuel. This is important for convenience and ensuring you use the correct amount. Look for products with clear instructions and easy-to-use measuring systems. If you are not comfortable with precise measurements, consider a stabilizer that comes with a built-in measuring cap or dispenser.

FAQ