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5 Best Fuel System Cleaners of 2025

Last Updated - 2025/07/16

1
Best Choice
12% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Chevron
12% Off

Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner, 20-Ounce (Pack of 6)

Chevron

CA$133.66

CA$151.89
(12% Off)

More Details
Main highlights
- Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
- Restores lost power and performance
- Reformulated with improved deposit control
- Reduces: rough idle, engine surge, hesitation, and spark plus fouling
- Proven unbeatable at cleaning the entire fuel intake system
- One 20 ounce bottle treats up to 20 gallon tank and uses every 3,000 as part of a regular maintenance program
- Improves: cold start performance, and fuel stability for up to one year
- Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
- Cleans and protects against corrosive sulfur deposits that can harm fuel gauge sensors
- Automobiles and trucks use every 3,000 miles or at your next oil change. All other gasoline engines use as needed (motorcycles, dirt bikes, boats, ATVs, RVs, water craft, lawn care, etc.)
CA$133.66
CA$151.89 (12% Off)
2
19% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Chevron
19% Off

Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 6

Chevron

CA$109.51

CA$136.56
(19% Off)

More Details
Main highlights
- Vehicles with higher mileage accumulation can suffer from the effects of age - including carbon build-up and corrosion in the fuel system. Techron High Mileage Fuel System Cleaner helps keep your engine humming, no matter how many roads your vehicle has traveled.
- Techron High Mileage Fuel System Cleaner is fully compatible and protective in all commercially available ethanol blends (E10, E85, etc).
- Restore power and performance - Restores lost power and performance by removing gum, varnish, and other fuel system deposits.
- Protect the fuel system and fuel gauge sensor from various types of corrosion - Multiple corrosion inhibitors protect metal components (both ferrous components like iron and steel, and non-ferrous components like copper and silver) from the damaging effects of corrosion.
- Maximize fuel economy - Keeps engines clean, and protects from deposits that rob engine efficiency and reduce fuel economy.
CA$109.51
CA$136.56 (19% Off)
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Red Line

Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, 2 Bottles

Red Line

CA$52.95

More Details
Main highlights
- Use one bottle per tank for most effective treatment of neglected vehicle
- Safe for continual use
- Reduces need for octane by up to two points
- Contains synthetic upper cylinder lubricant
- Cleans to nearly 100 percent efficiency in one treatment
CA$52.95
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Gumout

Gumout 30001 All-in-One Fuel System Cleaner 296ml

Gumout

CA$13.97

CA$14.99
(6% Off)

More Details
Main highlights
- Use every 5,000 km
- Prevents future carbon build-up
- Improved performance and fuel economy in one fill-up
- Conditions fuel to fight ethanol and water corrosion
- Cleans entire fuel system: intake valves & ports; GDI/direct and port injectors; cylinder heads; combustion chamber; and piston tops
CA$13.97
CA$14.99 (6% Off)
5
Best Value
20% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Gumout
20% Off

Gumout 800001742 Regane High Mileage Fuel System Cleaner, 177mL

Gumout

CA$10.68

CA$13.49
(20% Off)

More Details
Main highlights
- Specially formulated for vehicles with over 75,000 kilometers
- Prevents future carbon build-up on port/indirect fuel injectors, intake valves and ports
- Conditions fuel to fight ethanol and water corrosion
- Cleans GDI/direct and port/indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, and combustion chamber
- Best for restoring performance and fuel economy in high mileage vehicles.
CA$10.68
CA$13.49 (20% Off)

5 Best Fuel System Cleaners of 2025

Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner, 20-Ounce (Pack of 6)

Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 6

Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, 2 Bottles

Gumout 30001 All-in-One Fuel System Cleaner 296ml

Gumout 800001742 Regane High Mileage Fuel System Cleaner, 177mL

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