Fuel Additives

See how AMSOIL products perform in the lab and in the field.

Gasoline and Diesel Fuel Additives

Fuel additives is one of the easiest and most proactive ways to keep engines operating as they should. Fuel injector deposits interrupt spray patterns, causing poor fuel atomization, incomplete combustion, excessive emissions and smoke.

Most fuel additives require use for several tanks before they provide any noticeable improvement in engine performance or fuel economy. AMSOIL fuel additives, however, boast potent formulas designed to provide nearly immediate results.

Gasoline Engines

AMSOIL P.i. Performance Improver cleaning deposits to improve fuel economy up to 5.7% with an average of 2.3% after just one tank of treated fuel.

Diesel Engines (Passenger cars/ trucks and heavy duty diesel engines)

Diesel All-In-One is recommended for use with all types of heavy- and light-duty, on- or off-road and marine diesel engines. Diesel All-In-One is specially engineered to provide exceptional all-season protection for a serious performance boost. One dose delivers outstanding detergency, improved lubricity, better cold flow and higher cetane.

Ultra-low-sulfur diesel fuel (ULSD) provides significantly reduced lubricity – a critical property in controlling wear in fuel pumps and injectors. Diesel All-In-One adds back the lubricity the fuel pump and injectors need, reducing wear, improving component service life.

  • Cleans dirty injectors
  • Improves fuel economy up to 8%
  • Lowers cold filter-plugging point (CFPP) by up to 40ºF
  • Safe for use in all diesel fuels, including biodiesel
  • Lubricates pumps and injectors to reduce wear
  • Combats fuel-system corrosion
  • Delivers maximum horsepower
  • Alcohol-free
  • Extends fuel-filter life
  • Prevents wax settling during storage
  • Increases cetane up to 4 points

Gasoline Engine Fuel Additives

P.i. Performance Improver


Gasoline Stabilizer

DOMINATOR® Octane Boost

Motorcycle Octane Boost

Diesel Fuel Additives

Diesel All-In-One

Diesel Injector Clean

Diesel Cetane Boost

Diesel Cold Flow

Diesel Recovery

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