The Best Fuel System Additives

Looking for the best Fuel System Additives?

Discover now our comparison of the best Fuel System Additives. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Fuel System Additives are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Fuel System Additives in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

SaleNo. 1

Lucas Oil 10003 Fuel Treatment - 1 Quart

The world’s #1 fuel additive for both gasoline and diesel engines
A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
Improves fuel economy by burning excess exhaust emissions
Increases power and acceleration by improving fuel flow and reducing deposit buildup
Neutralizes sulfur and other harmful contaminants present in the fuel system
Increases the life of pumps and injectors
Prevents rust and corrosion, prolonging the life of engine and fuel system components
Complies with federal low sulfur content requirements for diesel motor vehicles and non-road, locomotive and marine diesel equipment engines
Safely replaces the need for lead in older engines without causing harmful effects

No. 2

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.)

No. 3

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

Includes AR6500 Diesel Treatment (40 oz)
Includes AR6400-D Diesel Fuel System Cleaner
Restore key fuel system components - injectors, turbo & dpf
Boost cetane, improve performance and MPG
AR6400-D is not the remedy for HEUI injector stiction. Please use AR9100 Friction Modifier instead

No. 4

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

Specially formulated to remove carbon deposits from engines with over 75,000 miles
Cleans fuel injectors, intake valves, and ports to restore performance and fuel economy
Prevents future carbon build-up and reduces emissions
Oxygen sensor safe and safe for use in turbocharged and supercharged vehicles
Will not void OEM/manufacturer's warranty

SaleNo. 5

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

FIXES ROUGH RUNNING ENGINES – STA-BIL Fast Fix eats away at gum and varnish that cause rough starts and no starts in your small engine equipment. This easy-to-use fuel additive combats the effects of ethanol blended gasoline
ELIMINATES WATER – This fuel injector cleaner helps to remove water that may get into your fuel system. Penetrating deep into the fuel line, this simple fuel additive prevents the need to disassemble the engine. The 8 oz. bottle of this alcohol-free fuel additive treats up to 20 gallons of fuel
VERSATILE – Compatible with all small engines, adding STA-BIL Fast Fix to your 2-cycle or 4-cycle small engine cleans carburetors and injectors while acting as a water remover. Use this product in your lawn mower, chainsaw, trimmer, snow blower, generator, and more
DIRECTIONS – For rough running engines use 1 oz. of STA-BIL Fast Fix per 2.5 gallons of fuel. Fill with fresh gas. Start the engine and allow to run for 15 minutes to allow the additive to work its way through the fuel system. If the engine does not start, attempt to turn it over a few times so the additive makes its way through the fuel system and allow to sit overnight. Attempt to start again, if problems persist you may need to have it looked at by a mechanic
All STA-BIL branded products are good for use up to 2 years after the bottle was opened. Be sure to mark the date you opened the bottle on the back of your package!

SaleNo. 6

STA-BIL In-Season Protection Fuel System Treatment | Full Protection Fuel System Cleaner, Injector Cleaner, Increases MPG, Prevents Corrosion, 32 Fl. Oz.

FUEL SYSTEM CLEANER: Cleanses the entire fuel system, including fuel injectors, lines, & fuel pumps, this formula removes water, gum, & varnish, ensuring optimal performance & longevity of your fuel system while preventing corrosion.
CORROSION PROTECTION: Industry-leading rust and corrosion protection for all internal fuel system parts.
MPG BOOSTER: Designed to optimize fuel performance which contributes to enhanced gas mileage & improved engine power. This advanced formula cleans & protects the fuel system, allowing for efficient combustion & prolonged engine life
DIRECTIONS: New name, same formula as our 360* Protection. Pour directly into fuel tank prior to fill up. Use 1 oz for every 5 gallons of fuel.
YEAR-ROUND PROTECTION: Pair STA-BIL In-Season Protection with STA-BIL Storage, providing a complete solution for both in-season operation & storage needs during the winter ensuring that your equipment remains in peak condition year-round.
FUEL STABILIZER: Stabilizes fuel in-season for gasoline sitting in collector cars, gas cans, etc. For specific storage needs, use our storage fuel stabilizer product.

SaleNo. 7

ATS Chemical 505 CRF Fuel System Treatment, 16 fluid ounces

A fuel system treatment that actually works!
The 505CRF formula is proven to remove tough carbon deposits on port style injectors, and direct style injectors.
Removes harmful deposits on induction ports, and induction valves.
Treats 5 to 20 gallons of gasoline or diesel fuel.
Helps restore your vehicles factory fuel economy & performance.
A perfect addition to your preventative maintanance needs!

No. 8

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.

Replaces: Cub Cadet 22216, 22287
Corrosion protection to help prevent and protect against problems caused by ethanol-blended fuels
Used in 2-cycle and 4-cycle engines
32 oz. treats 80 gallons of fuel; 1 oz. treats 2 1/2 gallons of fuel
Keeps stored fuel fresh; Prevents varnish and gum deposits

No. 9

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

Restore power and performance - Restores lost power and performance by removing gum, varnish, and other fuel system deposits.
Maximize fuel economy - Keeps engines clean, and protects from deposits that rob engine efficiency and reduce fuel economy.
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.
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).

SaleNo. 10

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

CLEANS FUEL STYSTEM: Hot Shot’s Secret Gasoline Extreme is designed to thoroughly clean, lubricate, and safeguard all components of a gasoline engine & fuel system, such as valves, pumps, injectors, rings, pistons, and upper cylinders.
BOOSTS FUEL ECONOMY: By thoroughly cleaning the fuel system, this fuel additive boosts MPG up to 7.9%, ensures combustion efficiency, & engine power, resulting in a smoother & more efficient driving experience.
FIXES ISSUES: This fuel treatment addresses common issues associated with rough-running engines in a single treatment. Designed to improve fuel economy, smooth out idling, & unclog fuel injectors, this will have your engine running great again!
RESTORES PERFORMANCE: High-performance cleaner that utilizes P.E.A. technology to deeply clean & restore engine power, dissolve gum & varnish buildup, removes deposits from the combustion chamber, resulting in improved overall engine performance.
EASY TO USE: With a simple application of 12 oz. for every 20 gallons of gasoline, this product is easy to use! Just pour it into your fuel tank during your next fill up or every 10,000 miles
POWERED BY SCIENCE: Our products are engineered to resolve issues, make equipment last longer and improve efficiency. Nothing leaves our building with our name on it unless we know it is absolutely the BEST it can be.

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Last update on 2025-06-06 / Affiliate links / Images from Amazon Product Advertising API

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