10 Best gasoline additives of 2025

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1

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
Main highlights

All-Engine Fuel Solution
Works in all engines and fuels, ideal for vehicles and tools.

Ethanol Problem Solver
Prevents and cures ethanol-related issues, ensuring better performance.

Highly Praised for Reliability
Customers appreciate its effectiveness in preventing fuel-related problems.
9.7

Exceptional

Our Rating

9.3
worth the money

9.1
distance
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Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
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Value for Money

2

Gumout
Gumout 510013W-6PK Fuel System Cleaner, 6 Pack
Main highlights

Restores Performance and Economy
Specially formulated to clean carbon deposits, improving engine performance and fuel economy.

Ideal for High Mileage Engines
Best for vehicles with over 75,000 miles, ensuring optimal performance.

Praised for Mileage Boost
Customers report noticeable improvements in mileage and engine smoothness.
9.6

Exceptional

Our Rating

9.9
Simple to use

9.3
worth the money

9.1
distance
3

STA-BIL
STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Fuel Additive that Protects Fuel System, Gas Stabilizer for Fuel Storage, 32 oz.

41% Off
Main highlights

Fuel Freshness for 24 Months
Preserves fuel freshness for up to 24 months, perfect for long-term storage.

Ideal for Seasonal Equipment
Perfect for storing vehicles, lawnmowers, and generators during off-season.

Highly Praised for Easy Starts
Users frequently commend its ability to ensure smooth engine starts.
9.4

Excellent

Our Rating

9.5
Simple to use

9.3
worth the money

8.0
dispense easily
4

Lucas Oil
Lucas Oil 10003 Fuel Treatment - 1 Quart
Main highlights

Fuel System Efficiency
Cleans and lubricates the fuel system, improving MPG and reducing emissions.

Versatile Application
Ideal for gasoline and diesel engines, including older engines needing lead replacement.

Customer Praised Performance
Highly effective in restoring engine power and smooth operation.
9.1

Excellent

Our Rating

9.9
Simple to use

9.7
worth the money

9.5
Long life
5

Chevron
Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1
Main highlights

Effective Fuel System Cleaner
Reduces rough idle, engine surge, hesitation, and spark plug fouling.

Versatile Use Cases
Ideal for cars, motorcycles, lawn mowers, and garden equipment.

Highly Praised Performance
Customers appreciate its ability to improve engine smoothness and fuel efficiency.
9.0

Excellent

Our Rating

9.7
Simple to use

9.7
materials Quality

9.1
Long life
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6

Hot Shot's Secret
‎Hot Shot's Secret Gasoline Extreme 12 Oz, Concentrated Fuel System Cleaner, Fuel Additive for Gasoline Engines, Injector Cleaner - Increases MPG & Restores Engine Performance

17% Off
Main highlights

Deep Fuel System Cleaning
Cleans, lubricates, and protects the entire gasoline fuel system and engine components.

Ideal for Performance Restoration
Acts as an engine flush to dissolve deposits and restore engine power.

Praised for Enhanced Throttle Response
Customers appreciate improved throttle response and fuel economy after use.
Key specs
- fuel type:Gasoline
- special features:Deeply cleans, lubricates
- product dimensions:N/A
- item size:N/A
- package dimensions:N/A
8.9

Very Good

Our Rating
7

Liqui Moly
Liqui Moly 2030 Pro-Line Gasoline System Cleaner, 500 ml, 16.91 Fl Oz (Pack of 1)

10% Off
Main highlights

Comprehensive Fuel System Cleaner
Enhances engine performance by cleaning and maintaining the gasoline system effectively.

Ideal for High-Mileage Vehicles
Perfect for improving performance in older or high-mileage cars.

Notable Improvement in Engine Smoothness
Users report smoother engine operation and improved fuel efficiency.
8.8

Very Good

Our Rating

9.9
Simple to use

9.5
Long life

9.5
distance
8

STAR BRITE
Star Tron Enzyme Fuel Treatment, Small Engine Formula, 16 Fl Oz â€“ Treats up to 96 Gals â€“ Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures & Prevents Ethanol Problems, Improves MPG & More

30% Off
Main highlights

Unleash Engine Potential
Advanced enzyme technology ensures engines start easily and run smoothly.

Ideal for Storage
Perfect for storing items over the off-season, preventing fuel degradation.

Long-Term Reliability
Praised for maintaining engine longevity and performance over decades.
8.7

Very Good

Our Rating
9

STP
STP Octane Booster, Bottled Fuel System Cleaner Restores Lost Power and Acceleration, 5.25 Oz, STP

50% Off
Main highlights

Boosts Octane and Performance
This product effectively boosts octane, reduces knocking and pinging, and helps restore overall engine performance for a smoother driving experience.

Ideal for Premium Gas Replacement
Perfect for cars requiring premium gas, especially in scenarios where high-octane fuel is unavailable. Great for long commutes and performance vehicles.

Improved Fuel Efficiency
Customers consistently praise the noticeable increase in miles per gallon and smoother engine performance across various car models.
8.6

Very Good

Our Rating

9.3
worth the money

9.3
distance
10

B-12
B-12 0116 Chemtool Fuel Injector Cleaner, 15 Ounce, (Single Unit)
Main highlights

High-Energy Solvent Technology
Contains 100 High-Energy Solvent Technology for superior cleaning of fuel systems.

Ideal for Fuel System Maintenance
Perfect for cleaning injectors, carburetors, and intake ports, enhancing engine performance.

Improved Fuel Efficiency
Customers praise enhanced fuel efficiency and engine responsiveness after use.
8.5

Good

Our Rating

9.7
worth the money

9.7
Simple to use

9.5
quality of ingredients

10 Best gasoline additives of 2025

1

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

9.3

9.1

How do we rank?

How do we rank?

Analyzing top stores

2

Gumout 510013W-6PK Fuel System Cleaner, 6 Pack

9.9

9.3

9.1

3

STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Fuel Additive that Protects Fuel System, Gas Stabilizer for Fuel Storage, 32 oz.

9.5

9.3

8.0

4

Lucas Oil 10003 Fuel Treatment - 1 Quart

9.9

9.7

9.5

5

Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1

9.7

9.7

9.1

6

‎Hot Shot's Secret Gasoline Extreme 12 Oz, Concentrated Fuel System Cleaner, Fuel Additive for Gasoline Engines, Injector Cleaner - Increases MPG & Restores Engine Performance

7

Liqui Moly 2030 Pro-Line Gasoline System Cleaner, 500 ml, 16.91 Fl Oz (Pack of 1)

9.9

9.5

9.5

8

Star Tron Enzyme Fuel Treatment, Small Engine Formula, 16 Fl Oz â€“ Treats up to 96 Gals â€“ Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures & Prevents Ethanol Problems, Improves MPG & More

9

STP Octane Booster, Bottled Fuel System Cleaner Restores Lost Power and Acceleration, 5.25 Oz, STP

9.3

9.3

10

B-12 0116 Chemtool Fuel Injector Cleaner, 15 Ounce, (Single Unit)

9.7

9.7

9.5

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