Best Big End Performance Fuel Additives in 2026

IMPROVES TOWING POWER: Helps breakdown and remove performance robbing deposits from the entire fuel system

IMPROVES ACCELERATION: Helps boost catane up to 7 points - improving efficency and throttle response

CLEANS AND LUBRICATES: Treats turbos, fuel injectors, pistons, and combustion chamber components

Keeps fuel fresh for up to 24 months during storage

Eliminates need to drain fuel prior to storage

Ensures quick, easy starts after storage

Cleans and Lubricates Fuel System: The product contains a blend of detergents and additives that help to clean and lubricate the fuel system, including the fuel injectors, carburetor, and combustion chamber.

Improves Fuel Economy: The product can help to improve fuel economy by removing deposits and contaminants from the fuel system and improving the efficiency of fuel combustion.

Reduces Emissions: By improving fuel combustion, the product can also help to reduce exhaust emissions, including harmful pollutants such as carbon monoxide and nitrogen oxides.

Safe to use in all diesel engines including agricultural and marine

Safe to use in all diesel fuel, including ultra low sulfur diesel and bio-diesel

Keeps diesel fuel fresh, for quick easy starts

Made in the U.S.A. Restores/Increase Horsepower.

Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%

Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise

Restores/Increase Horsepower – detergents clean deposits in the injection system

Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%

Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise

Made in the U.S.A. Restores/Increase Horsepower.

Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%

Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise

Restores/Increase Horsepower: detergents clean deposits in the injection system

Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent

Cetane Improver improves combustion resulting in better engine starting, running and reduced noise

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

Restores/Increase Horsepower: detergents clean deposits in the injection system

Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent

Cetane Improver improves combustion resulting in better engine starting, running and reduced noise

Advanced All-season Formula

Cleans and lubricates the entire system

Demulsifies water

Cleans deposits, piston tops, cylinder heads, intake ports, intake valves

Restores lost engine performance

Restores gas mileage and improves combustion

CleanBoost 8oz. Maxx is a small and convenient size to take with you on a road trip. This one 8oz. bottle will treat up to 240 gallons of either diesel or gasoline.

This special squeeze-type container allows just the right amount of Maxx into the built in chamber for easy dosing of your fuel system.

Feel the power and smoothness of your engine as CleanBoost Maxx begins to go to work destroying carbon deposits, removing harmful water acumulation, blowing out slagging and cold-end corrosion.

ADD A DISTINCTIVE SMELL TO YOUR EXHAUST FUMES and eliminate unpleasant odor

HIGHLY CONCENTRATED AND SAFE for all internal combustion engines, carburetors, oxygen sensors, and catalytic converters

WILL NOT RESTRICT OR BOOST ENGINE PERFORMANCE for peace of mind

Vendor Part Number: 17132

Vendor Part Number: 17149

A Proven Crowd Pleaser

Eliminates Harsh Alcohol Order

Specially Formulated For Motor Fuels

Specially formulated for motor fuels

Eliminates harsh alcohol order

A proven crowd pleaser

Formula is specially formulated for methanol use

Engineered to provide reduced friction and better protection from corrosion associated with the use of methanol fuel

Scented Top Lubes contain a low dose of fragrance

Vendor Part Number: 17147