AMSOIL's selection of quality fuel additives will make your gasoline or diesel engine breath easier and work more efficiently. The quality of the fuel your engine runs on greatly determines its power and responsiveness. Use these products to clean your engine while you drive, and make sure your engine is getting the nutrients it needs to operate at peak performance.

PI Performance Improver Gasoline Additive

Ideal for both fuel injected and carbureted systems. Dissolves and removes fuel system deposits and other contaminants for improved power and overall performance in gasoline engines. Improves engine idle, response and starting.
Product Code: API

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Series 2000 Octane Boost

Improves the performance of all two-cycle and four-cycle gasoline-fueled engines. Just one treatment significantly increases engine response and power. AMSOIL Octane Boost reduces engine knock, improves ignition, helps fuel burn cleaner and inhibits corrosion. Recommended for all high performance off-road and racing applications. Increases octane number by up to 7 points.
Product Code: AOB

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Diesel Fuel Additive Concentrate

All-season performance. Lowers diesel fuel gel point by 20° to 35° F, depending on mix ratio. Improves the performance, fuel efficiency and longevity of diesel engines while reducing deposits, black smoke, emissions and injector wear. For use in heavy-duty diesel engines. Treats up to 100 gallons.
Product Code: ADC

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Cold Flow Improver

AMSOIL Cold Flow Improver (ACF) has been reformulated to provide maximum cold flow capabilities in diesel fuels. The new formulation provides superior performance over the former DFF formulation
Product Code: ACF

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Cetane Boost Diesel Fuel Additive (all diesel engines)

Improves combustion efficiency to increase power in diesel engines. Raises cetane three to seven numbers. Also improves low-temperature starting, fuel ignition quality and reliability. Treats up to 200 gallons.
Product Code: ACB

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Diesel Fuel Modifier
(light-duty diesel engines)

Improves combustion, fuel efficiency, cold-weather starting, power and performance. Cleans injectors, fuel screens, pumps and filters. For use in diesel-powered cars and light-duty trucks. Treats up to 40 gallons.
Product Code: ADM

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Gasoline Stabilizer
(Suitable for gasoline or diesel fuel)

AMSOIL Gasoline Stabilizer keeps fuel from deteriorating during storage. Reduces the oxidation process and prevents varnish and gum build-up in gasoline. These contaminates can clog injectors, stick floats and cause poor engine startup. Allows easier start-ups.
Product Code: AST

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