Best Fuel System Cleaners

In this article, we have reviewed the best fuel system cleaners. If you are in a hurry, the table below gives a quick snapshot of the top ones.

Top Choice
Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6)
Second Choice
Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, (15 Ounce, (Pack of 2))
Best Value
STP 5.25 Ounce 78568 Complete Fuel System Cleaner-5.25 fl. oz
What's good?
Restores lost power and fuel economy. Reduces: rough idle and engine surge. Improves cold start performance
Nearly 100% efficiency, Reduce octane use by 2 points,
Restores performance, removes deposits
What could be better?
Its quite good
The nozzle might be too short to put it in a few gas tanks.
Works only with cap-less fuel tanks
Prime
-
Top Choice
Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6)
What's good?
Restores lost power and fuel economy. Reduces: rough idle and engine surge. Improves cold start performance
What could be better?
Its quite good
Prime
Second Choice
Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, (15 Ounce, (Pack of 2))
What's good?
Nearly 100% efficiency, Reduce octane use by 2 points,
What could be better?
The nozzle might be too short to put it in a few gas tanks.
Prime
Best Value
STP 5.25 Ounce 78568 Complete Fuel System Cleaner-5.25 fl. oz
What's good?
Restores performance, removes deposits
What could be better?
Works only with cap-less fuel tanks
Prime
-

Does your car offer a lower mileage than before? Does your vehicle engine misfire or jolt while starting? Carbon deposits might have clogged your vehicle’s fuel system.

According to NHTSA, mechanical failures play a direct or indirect role in vehicle accidents.[1] Engine failure being one of the topmost mechanical failures.

A clogged fuel system leads to issues like low fuel economy, engine starting problem, rpm surge, and in worst cases, an engine failure.

 

Best Fuel System Cleaners

 

An engine failure can leave your car stalled in the middle of fast-moving traffic. So regularly cleaning the fuel system of your vehicle is a necessity.

For removing deposits from a vehicle’s fuel system, fuel system cleaners are required.

We have discussed the eight best fuel system cleaners for your vehicle’s engine.

Our Top Choice – Chevron Techron Concentrate Plus Fuel System Cleaner

The Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6) is our top choice for Best Fuel System Cleaners, because of the following reasons:

  • The Techron fuel system cleaner removes harmful carbon deposits from engine parts.
  • It helps restore the lost engine power and performance.
  • This cleaner cleans and restores the entire fuel system to help regain fuel efficiency.
  • It also cleans the fuel gauge sensors contaminated with sulfur.
  • It prevents deposit formation by the use of low-quality fuels.
  • The fuel system cleaner has polyether amine technology, which is patented.
  • It is safe to use with gasoline and ethanol fuel engines.
  • It restores the acceleration power of the engines and minimizes harmful emissions from the exhaust.
  • It helps improve the cold start performance of the engine.
  • It reduces the engine surge, rough idling, and fouling in the spark plug.

Best Fuel System Cleaners

#1 Chevron Techron Concentrate Plus Fuel System Cleaner

Chevron Techron Concentrate Plus Fuel System Cleaner

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This fuel system cleaner contains light petroleum distillate and other additives that help clean your engine. It comes with a pack of six bottles of 20-ounce each and suitable for all gasoline and ethanol fuel engines.

Features and Benefits

  • Fuel efficiency: This fuel system cleaner cleans and restores fuel efficiency. The engine with every gasoline refuels is less fuel-efficient due to the deposits that make it work harder. 
  • Carbon deposits: Gasoline contains hydrocarbon and other impurities. As your fuel system works, the carbon deposits develop on different engine parts. This cleaner cleans the deposits and restores the power and performance of the engine.
  • Cleaning additives: This fuel system cleaner contains a patented additive called polyether amine technology that cleans the intake valves, combustion chambers, fuel injectors, and carburetors.
  • Cleans and restores: It cleans deposits from the fuel gauge sensors. It helps reduce the engine surge, rough idling, and fouling spark plug. It also helps in improving the cold start performance of your engine.

Chevron Techron Concentrate Plus Fuel System Cleaner

Why should you buy it?

If you are having a problem with your vehicle’s engine’s fuel economy and performance, then this fuel system cleaner is made for you. The cleaner restores the working power of all the fuel system parts.

Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6)
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual
  • Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
  • Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
  • Reduces: rough idle, engine surge, hesitation, and spark plus fouling
  • Improves: cold start performance, and fuel stability for up to one year

 

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#2 Red Line Complete SI-1 Fuel System Cleaner

Red Line Complete SI-1 Fuel System Cleaner

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This fuel system cleaner has the most powerful concentrated blend of detergents that works well in different temperatures. It has petroleum distillates and polyether amine additives to clean the deposits. It contains synthetic upper cylinder lubricants to clean fuel injectors.

Features and Benefits

  • Cleans: This fuel system cleaner cleans the deposits from intake valves, combustion chambers, carburetors, and fuel injectors with the concentrated blend of detergents available in the formula.
  • Fuel stability: It improves fuel economy by removing deposits from the fuel system and enhancing the engine’s performance. It enhances the fuel stability by reducing the gum and varnish formation in the fuel system parts.
  • Reduces: The cleaner reduces the octane demand of the engine. It reduces the increase in rpm due to the stalled compressor. It also reduces the fouling of spark plugs by the rise in rough idling.
  • Improves: This cleaner improves the horsepower of engines and exhaust systems by minimizing harmful emissions. 

Red Line Complete SI-1 Fuel System Cleaner

Why should you buy it?

The Red Line SI-1 fuel system cleaner is suitable for direct fuel injection engines. It is safe to use with unleaded or oxygenated fuels and safe for catalytic converters and oxygen sensors. 

Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, (15 Ounce, (Pack of 2))
  • Cleans to nearly 100 percent efficiency in one treatment
  • Reduces need for octane by up to two points
  • Contains synthetic upper cylinder lubricant
  • Safe for continual use
  • Use one bottle per tank for most effective treatment of neglected vehicle

#3 Royal Purple Max-Clean Fuel System Cleaner

Royal Purple Max-Clean Fuel System Cleaner

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The fuel system cleaner and stabilizer maximizes the performance of the fuel system. The Max-Clean technology cleans the deposits from new or old engine parts with ease. The cleaner increases fuel economy and reduces harmful emissions.

Features and Benefits

  • Enhances performance: This fuel system cleaner cleans the fuel injectors and maximizes the fuel economy. It improves the engine’s performance by removing deposit buildup from different engine parts. 
  • Suitable for all engines: It effectively cleans the intake valves, combustion chambers, and carburetors of any machine. This cleaner is ideal for new or old engines that use gasoline or diesel fuels.
  • Prevents: This fuel system cleaner reduces and prevents engine surges and stalling. It prevents rough idle due to the inadequate functioning of the spark plug. It also prevents future deposit buildups due to low-quality fuel.
  • Usage: Use the entire 20-ounce bottle in an empty tank and then refuel with 20 gallons of fuel. Only one treatment will enhance the performance of the engine and increases fuel economy.

Royal Purple Max-Clean Fuel System Cleaner

Why should you buy it?

If your engine is having problems like harmful emissions or low fuel efficiency, this Royal Purple Max-Clean fuel system cleaner is the best option to clean your fuel system. This cleaner reduces harmful emissions of hydrocarbons, nitrogen oxide, and carbon monoxide.

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722
  • 3-in-1 fuel additive keeps new engines clean and improves vehicle's performance
  • Improves fuel economy an average of 3.2 percent
  • Increases horsepower an average of 2.6 percent
  • Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)
  • Fit type: Vehicle Specific

 

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#4 TECHRON – Concentrate Plus Fuel System Cleaner

TECHRON - Concentrate Plus Fuel System Cleaner

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Techron concentrate plus fuel system cleaner cleans stubborn deposits from the fuel system and engine parts. This 32-ounce bottle helps enhance the performance of your engine.

Features and Benefits

  • Restores fuel economy: The stubborn deposits in the engine parts reduce the fuel systems’ working efficiency, resulting in low miles per gasoline. 
  • Cleaning: This cleaner cleans the intake valves, combustion chambers, fuel injectors, and carburetors, enhancing the power and performance of the engine.
  • Restores: It helps restore the acceleration capability of the engine. The cleaner also cleans and restores the fuel gauge sensor. 
  • PEA – Polyether amine: This fuel system cleaner has polyether amine as an additive, a patented technology. The additive with the petroleum distillate act as a detergent to remove deposits.

TECHRON - Concentrate Plus Fuel System Cleaner

Why should you buy it?

This fuel system cleaner helps reduce the rpm surge of the engine and stalling. It also reduces premature fouling of spark plug due to rough idling. Use it after every 3000 miles in your engines to maintain the performance.

TECHRON - 266701317 Techron Concentrate Plus Fuel System Cleaner, 32 oz
  • Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
  • Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
  • Reduces: rough idle, engine surge, hesitation, and spark plus fouling
  • Improves: cold start performance, and fuel stability for up to one year
  • 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.)

#5 STP Complete Fuel System Cleaner

STP Complete Fuel System Cleaner

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STP complete fuel system cleaner comes in a 5.25 fl. ounce bottle that treats 21 gallons of gasoline. It cleans the gasoline engines, including turbo, hybrid, and direct fuel injected engines.

Features and Benefits

  • Cleans fuel intake system: This fuel system cleaner cleans the fuel injector, combustion chamber, intake valve, and carburetor, saving fuel.
  • Removes harsh deposits: It removes the severe deposits in the engines that develop due to the hydrocarbon burning present in the gasoline.
  • Restore fuel efficiency and performance: The STP cleaner cleans the entire fuel system to increase the fuel economy. It helps restore the power and performance of the engine.
  • Use every refueling: Use the 5.25 fl. ounce bottle in an empty tank and then fill the fuel tank with 21 gallons of gasoline. For better treatment, use the fuel system cleaner every 4000 miles or when refueling.

STP Complete Fuel System Cleaner

Why should you buy it?

This fuel system cleaner prevents your engine from corrosion and oxidation. It has an advanced synthetic formula that contains PEA and PIBA detergents to remove harmful deposits from the engine.

STP 5.25 Ounce 78568 Complete Fuel System Cleaner-5.25 fl. oz
  • Save gas by keeping fuel intake system clean
  • Helps restore performance
  • Removes deposits from entire fuel system
  • Helps inhibit corrosion
  • Compatible with cap-less fuel tanks

 

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#6 Liqui Moly Pro-Line Fuel System Cleaner

Liqui Moly Pro-Line Fuel System Cleaner

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This fuel system cleaner is suitable for cleaning all gasoline engines. It comes in a 16.9 fl. ounce bottle and helps treat 18.5 gallons of gasoline.

Features and Benefits

  • Cleans deposits: This fuel system cleaner cleans deposits from fuel injectors, intake valves, combustion chambers, and carburetors.
  • Improves performance: It improves the engine performance and helps increasing fuel economy. It helps reduce emissions and keeps the fuel system clean and unclogged.
  • Eliminates problems: This cleaner eliminates the engine starting problem by cleaning the spark plug. Starting an engine becomes easy.
  • Protects fuel system: The cleaner acts as a preventive measure for resisting future deposits. The fuel burns entirely and provides high efficiency. 

Liqui Moly Pro-Line Fuel System Cleaner

Why should you buy it?

Liqui Moly pro-line fuel system cleaner protects the fuel system from corrosion. It also prevents reforming of the deposits and reduces harmful emissions.

Sale
Liqui Moly 2030 Pro-Line Fuel System Cleaner, 500 ml
  • Package Dimension : 2.24 " L x 2.24 " W x 7.96 " H
  • Country of Origin: GERMANY
  • Model Number : 2030
  • Item Package Weight : 0.9 pounds

#7 Gumout All-In-One Fuel System Cleaner

Gumout All-In-One Fuel System Cleaner

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The cleaner uses PEA – polyether amine as an additive to completely clean the carbon deposits from engines. It prevents corrosion that helps increase the life of engine parts.

Features and Benefits

  • Cleans thoroughly: This fuel system cleaner cleans the GDI – gasoline direct injection engines. It also cleans the indirect injectors, intake valve, and other parts of the fuel system.
  • Increases horsepower: It cleans the upper chamber that helps reduce friction to improve horsepower and fuel efficiency.
  • Extend the life of engine parts: It helps prevent corrosion that increases the life of engine parts. It conditions the fuel to avoid rusts to the engine.
  • Uses PEA: This fuel system cleaner uses PEA – polyether amine, an additive that helps remove the carbon deposits and enhance engine performance.

Gumout All-In-One Fuel System Cleaner

Why should you buy it?

Gumout All-in-one fuel system cleaner comes with ethanol treatment making it suitable for cleaning all types of engines. You can use it every 3000 miles or at the time of gas refueling for better treatment of your vehicle’s engine.

Gumout 510016 All-in-ONE Complete Fuel System Cleaner, 10oz. (Pack of 6)
  • Complete fuel system cleaner improves performance across the fuel system
  • Uses PEA (polyether amine) to effectively remove carbon deposits other products can't
  • Conditions fuel to fight corrosion, extending the life of key engine parts
  • Reduces friction and wear in the upper cylinder, improving horsepower and fuel economy
  • Cleans direct and indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, and combustion chamber

#8 Star Tron Gas Tank & Fuel System Cleaner

Star Tron Gas Tank & Fuel System Cleaner

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Star Tron enzyme fuel treatment is a fuel system cleaner with a unique enzyme formula to remove buildup from the fuel tank. It allows the engine of the vehicle to reach maximum performance level. 

Features and Benefits

  • Improved engine performance: The unique enzyme formula of Star Tron helps burn the fuel completely, which allows for enhanced engine performance and a smooth operation. 
  • Cleans deposits in the fuel tank: The Star Tron fuel system cleaner cleans clogged fuel tanks and improves fuel efficiency. It eliminates carbon, gum and varnish, and other substantial deposits from the carburetor and fuel injectors. 
  • Prevents phase separation: The fuel treatment by Star Tron prohibits phase separation. It transforms water into sub-micron sized droplets and disperses it into the fuel. The water is then safely eliminated during the engine working.
  • Less quantity required: The initial dose of this fuel system cleaner by Star Tron is 1oz for every 3 gallons and, while refilling, 1oz for every 6 gallons of fuel. Add the cleaner before every fuel refill for the smooth working of the engine.

Star Tron Gas Tank & Fuel System Cleaner

Why should you buy it?

If you don’t use your vehicle regularly but don’t want its performance to degrade, the Star Tron enzyme treatment is the best solution for you. This fuel system cleaner has a unique formula to allow the engine’s easy start even after months. 

Star Tron Gas Tank & Fuel System Cleaner - Remove Sludge & Deposits From Gasoline & Diesel Fuel Tanks + Clean Injectors & Fuel Lines
  • Exceptional at Cleaning sludge and other fuel contaminants from gasoline and diesel tanks
  • A cost-effective alternative to expensive fuel polishing and Tank Cleaning
  • Add 1 fl. Oz. For every 4 Gallons of gas or diesel fuel
  • Außergewöhnliche bei Reinigung Schlamm und anderen Fuel Verschmutzungen von Benzin und Diesel-Tanks
  • Eine kostengünstige Alternative zu teuren Kraftstoff Polieren und Tank-Reinigung

 

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#9 Berryman 7516 High Mileage Fuel System Rejuvenator

Berryman 7516 High Mileage Fuel System Rejuvenator

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The Berryman 7516 is the perfect rejuvenator for your fuel system. It can bring back lost power, improve octane requirements, reduce rough idle, and enhance overall drivability. Your fuel economy will improve to a large extent. It can also disperse moisture and stabilize gasoline

Features and Benefits

  • Removes fuel residue: The fuel system cleaner uses powerful detergents and solvents to dissolve fuel residue and deposits in the engine, making the engine’s fuel system almost like new again. 
  • High Energy Solvent Technology: Berryman focuses on using high energy solvents which have much greater dissolving power, rather than weak dilutents.  This proprietary methodology (known as HEST) makes Berryman’s products more powerful than its competitors 
  • Prevents phase separation: The effects of fuel system rejuvenation are amazing. It gives back your engine the lost power that it once had, brings back octane requirements to the same level as they used to be. All-in-all the system makes sure that you get much better drivability than you are currently getting. Your fuel economy suddenly jumps up, the gasoline feels a lot more stable and there is no moisture in the engine.

Berryman 7516 High Mileage Fuel System Rejuvenator

Why should you buy it?

The Berryman 7516 is perfect for all two and four stroke engines. It has a universal fit, and you would love the jump in fuel economy that you get once you start using it.

Berryman 7516 High Mileage Fuel System Rejuvenator, Pour Can 15 fl.oz
  • Powerful detergents and HEST solvents
  • Restores lost power, reduce rough idle and hesitation, restore octane requirements, and improve overall drivability. Improves fuel economy, disperses moisture, and stabilizes gasoline
  • Dissolves fuel residue and carbon deposits
  • Great for all 2-stroke and 4-stroke marine and small gas engines
  • HEST - "High Energy Solvent Technology, " a Berryman exclusive, incorporates the use of strong solvents, as opposed to weak carriers and diluents such as mineral spirits or kerosene

Buyer’s Guide: Best Fuel System Cleaners

Cleaner for all type of engine

There are fuel system cleaners capable of cleaning the indirect fuel injection engines or GDI – gasoline direct injection engines or both.

Some cleaners work with gasoline engines or diesel engines, or both. Multiple fuel system cleaners are suitable for almost every type of engine.

It would be best if you select a cleaner suitable for all engines or according to your need.

 

Best Fuel System Cleaners

Ingredients

Most of the fuel system cleaner comes with petroleum distillates that help remove the engines’ harsh carbon deposits and prevent future deposits.

Other additives are PEA – polyether amine and PIB – polyisobutylene that prevents engine parts from oxidation and corrosion.

Choose a fuel system cleaner that has all the essential ingredients.

Complete fuel system cleaners

There are fuel injector cleaners and fuel system cleaner in the market. Fuel injector cleaners only clean the fuel injectors of an engine.

You can choose a fuel system cleaner that cleans the entire fuel system, including the fuel injectors, intake valves, combustion chambers, carburetors, and spark plugs.

Frequently Asked Questions: Best Fuel System Cleaners

How to choose the best fuel system cleaner?

Depending upon the fuel, there are different engine types. You would need a fuel system cleaner according to your engine type. T

here are cleaners for gasoline, diesel, or ethanol engines and direct or indirect fuel injection engines.

Consider a fuel system cleaner that is capable of cleaning all types of engines. Buy a cleaner with suitable additives and conditioners.

 

Best Fuel System Cleaners

How should I use a fuel system cleaner?

Pour the entire bottle of fuel system cleaner into an empty fuel tank and then refill the fuel tank with gasoline or diesel.

Use the quantity of fuel system cleaner and gas as directed on the bottle. Many people use the system cleaner every 3000 to 5000 miles.

You can use the cleaner on every refueling of the fuel tank.

Conclusion

Your car engine needs as much attention as the rest of the car body. Keeping the fuel system clean ensures you get great fuel economy and the engine works at its best capacity

In our opinion, the Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6)  is the best choice among the various options that we have considered because it contains a patented additive called polyether amine technology that cleans the intake valves, combustion chambers, fuel injectors, and carburetors.

The Red Line 60103 Complete SI-1 Fuel System Cleaner, 15 Ounce, (15 Ounce, (Pack of 2))  is our next best choice because it is safe to use with unleaded or oxygenated fuels and safe for catalytic converters and oxygen sensors. 

 

Best Fuel System Cleaners

 

If you are looking for a value for money option, you can also consider the STP 5.25 Ounce 78568 Complete Fuel System Cleaner-5.25 fl. oz, which offers great value and features at a very reasonable price point. 

 

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References:

[1] Top Mechanical Failures that Cause Car Accidents (lowmanlawfirm.com)