February 21, 2026

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10 Best fuel injector cleaners of 2026

Save up to 17% off

1

ComStar

ComStar Super Heat, 8-in-1 Fuel Oil Treatment, 16 Ounces, Controls Waxing & Jelling, Melts Ice, Lowers Pour Point, Dissolves Sludge, Reduces Soot, Rust, Water, Cleans Parts, Made in USA (Pack of 24)
9.8

Exceptional

Our Rating
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2

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 (2 Pack)
Main highlights

Comprehensive Cleaning and Protection
Red Line SI-1 cleans injectors, carburetors, valves, and prevents corrosion.

Ideal for Performance Boost
Best used in vehicles needing enhanced performance and smoother engine operation.

Customer-Praised Performance Improvement
Notable increase in vehicle performance and fuel efficiency.
9.5

Excellent

Our Rating

9.9
Simple to use

9.3
Precision

9.1
worth the money
3

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 (2 Pack)

11% Off
Main highlights

Comprehensive Cleaning and Protection
Red Line SI-1 cleans injectors, carburetors, valves, and prevents corrosion.

Ideal for Performance Boost
Best used in vehicles needing enhanced performance and smoother engine operation.

Customer-Praised Performance Improvement
Notable increase in vehicle performance and fuel efficiency.
9.2

Excellent

Our Rating

9.9
Simple to use

9.3
Precision

9.1
worth the money
4

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.
9.1

Excellent

Our Rating

9.9
Simple to use

9.3
worth the money

9.1
distance
5

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.
9.0

Excellent

Our Rating

9.9
Simple to use

9.3
worth the money

9.1
distance
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6

Chevron
Chevron Techron Concentrate Plus Fuel System Cleaner, 12 oz, Pack of 1
Main highlights

Cleans Restores Protects Fuel System
Chevron Techron Concentrate Plus cleans, restores, and protects fuel injectors, carburetors, intake valves, and combustion chambers, enhancing overall vehicle performance.

Ideal for Regular Maintenance
Use every 3,000 miles for automobiles and trucks, or as needed for other gasoline engines like motorcycles, boats, and lawn care equipment.

Highly Praised for Effectiveness
Customers consistently praise its ability to improve engine performance and fuel economy, making it a trusted choice for vehicle maintenance.
8.9

Very Good

Our Rating

9.7
worth the money

9.5
materials Quality

9.1
Simple to use
7

Chevron
Chevron Techron Concentrate Plus Fuel System Cleaner, 12 oz, Pack of 1
Main highlights

Cleans Restores Protects Fuel System
Chevron Techron Concentrate Plus cleans, restores, and protects fuel injectors, carburetors, intake valves, and combustion chambers, enhancing overall vehicle performance.

Ideal for Regular Maintenance
Use every 3,000 miles for automobiles and trucks, or as needed for other gasoline engines like motorcycles, boats, and lawn care equipment.

Highly Praised for Effectiveness
Customers consistently praise its ability to improve engine performance and fuel economy, making it a trusted choice for vehicle maintenance.
8.8

Very Good

Our Rating

9.7
worth the money

9.5
materials Quality

9.1
Simple to use
8

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
8.5

Good

Our Rating

9.7
Simple to use

9.5
quality of ingredients

9.3
worth the money
9

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
8.2

Good

Our Rating

9.7
Simple to use

9.5
quality of ingredients

9.3
worth the money
10

Lucas Oil
Lucas Oil 10003 Fuel Treatment - 1 Quart

17% Off
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.
7.9

Good

Our Rating

9.9
Simple to use

9.7
worth the money

9.5
Long life

10 Best fuel injector cleaners of 2026

1

ComStar Super Heat, 8-in-1 Fuel Oil Treatment, 16 Ounces, Controls Waxing & Jelling, Melts Ice, Lowers Pour Point, Dissolves Sludge, Reduces Soot, Rust, Water, Cleans Parts, Made in USA (Pack of 24)

How do we rank?

How do we rank?

Analyzing top stores

2

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 (2 Pack)

9.9

9.3

9.1

3

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 (2 Pack)

9.9

9.3

9.1

4

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

9.9

9.3

9.1

5

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

9.9

9.3

9.1

6

Chevron Techron Concentrate Plus Fuel System Cleaner, 12 oz, Pack of 1

9.7

9.5

9.1

7

Chevron Techron Concentrate Plus Fuel System Cleaner, 12 oz, Pack of 1

9.7

9.5

9.1

8

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

9

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

10

Lucas Oil 10003 Fuel Treatment - 1 Quart

9.9

9.7

9.5

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