August 29, 2025

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10 Best fuel additives of 2025

Save up to 20% off

Best Choice

1

Archoil
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner
Main highlights

Fuel System Restoration
Restores key fuel system components like injectors, turbo & DPF.

Best for Diesel Engines
Ideal for improving performance and MPG in diesel engines.

Praised for Fuel Economy
Customers praise its ability to boost fuel mileage significantly.
9.8

Exceptional

Our Rating

9.7
Long life

9.5
distance

9.1
worth the money
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Archoil
Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles
Main highlights

Powerful Combustion Modifier
Incorporates Archoil's proven technology for increased power and response.

Ideal for All Diesel Engines
Perfect for diesel vehicles requiring enhanced fuel performance and protection.

Praised Fuel Efficiency Boost
Customers report noticeable improvements in fuel mileage and engine smoothness.
Key specs
- Lubricity:Lubricates fuel system
- Fuel Economy:Increases fuel economy MPG
- Injector Cleaning:Cleans fuel system
- Performance Enhancements:Increases power and response
- Cetane Boost:Strong cetane boost
9.7

Exceptional

Our Rating

9.5
worth the money

9.1
distance
3

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.
9.4

Excellent

Our Rating

9.9
Simple to use

9.7
worth the money

9.5
Long life
4

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

10% Off
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.
Key specs
- product dimensions:3 x 4.5 x 10.25 inches
- fuel type:All engines and fuels
- item size:1.9 pounds
- special features:Ethanol problem solver
- package dimensions:N/A
9.1

Excellent

Our Rating

9.3
worth the money

9.1
distance
5

Red Line
Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce
Main highlights

Comprehensive Cleaning Power
Red Line SI-1 effectively cleans injectors, carburetors, and valves.

Ideal for Older Vehicles
Best used in vehicles with suspected fuel system fouling.

Notable Mileage Improvement
Customers report significant gas mileage increases after treatment.
Key specs
- Application Method:One bottle per tank
- Performance Improvement:Enhances gasoline stability
- Volume:15 Ounce
- Compatibility:Fuel systems
- Cleaner Function:Cleans injectors and carburetors
8.8

Very Good

Our Rating

9.7
Simple to use

9.5
quality of ingredients

9.3
worth the money
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6

STA-BIL
STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Additive that Protects System, Gas Stabilizer for Storage, 8 oz.

20% Off
Main highlights

Keeps Fuel Fresh for 24 Months
Preserves fuel for up to 24 months, ensuring reliable vehicle and equipment storage without fuel degradation.

Ideal for Long-Term Storage
Perfect for storing cars, lawnmowers, and generators, preventing fuel-related issues during extended periods of inactivity.

Praised for Easy Engine Starts
Customers appreciate the ease of starting engines after storage, thanks to its effective stabilization properties.
8.6

Very Good

Our Rating

9.7
Simple to use

9.5
worth the money

9.5
Stability
7

STA-BIL

STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304) , Green

13% Off
8.4

Good

Our Rating

9.9
Stability

9.7
Simple to use

9.1
worth the money
8

Royal Purple
Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, 6 fl. oz.
Main highlights

Fuel Efficiency Booster
Restores fuel economy and maximizes horsepower for better performance.

Versatile Engine Compatibility
Ideal for both gasoline and diesel engines, stabilizes ethanol.

Customer Praised Effectiveness
Improves engine responsiveness and smoothness, as noted in reviews.
8.3

Good

Our Rating

9.7
Simple to use

8.9
worth the money

8.7
distance
9

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.
8.2

Good

Our Rating

9.7
Simple to use

9.7
materials Quality

9.1
Long life
10

Chevron
Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 1
Main highlights

Restores Power and Performance
Removes gum, varnish, and deposits, enhancing engine efficiency and power.

Ideal for High Mileage Vehicles
Perfect for older vehicles, preventing carbon build-up and corrosion.

Highly Recommended by Users
Praised for effectiveness and value, with consistent top ratings.
Key specs
- Application Method:Fuel system cleaner
- Performance Improvement:Restores lost power
- Volume:12 ounces
- Compatibility:E10, E85, etc.
- Cleaner Function:Restore power and performance
8.0

Good

Our Rating

9.7
Simple to use

9.1
Long life

8.9
worth the money

10 Best fuel additives of 2025

1

Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner

9.7

9.5

9.1

How do we rank?

How do we rank?

Analyzing top stores

2

Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles

9.5

9.1

3

Lucas Oil 10003 Fuel Treatment - 1 Quart

9.9

9.7

9.5

4

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

5

Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce

9.7

9.5

9.3

6

STA-BIL Storage Fuel Stabilizer | Keeps Fuel Fresh for 24 Months, Prevents Corrosion, Gasoline Treatment Additive that Protects System, Gas Stabilizer for Storage, 8 oz.

9.7

9.5

9.5

7

STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304) , Green

9.9

9.7

9.1

8

Royal Purple 18000 Max Atomizer Fuel Injector Cleaner, 6 fl. oz.

9.7

8.9

8.7

9

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

9.7

9.7

9.1

10

Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 1

9.7

9.1

8.9

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