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Fuel Additives

Gasoline

P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher octane fuel. (API). Your engine’s top-end is sparsely lubricated and prone to the development of performance-robbing deposits. It’s also highly susceptible to corrosion, an issue compounded by the prevalence of ethanol in today’s fuel. 

 

 

Diesel

AMSOIL Diesel All-In-One (ADB) combines the superior detergency and improved lubricity of AMSOIL Diesel Injector Clean, the excellent cold-flow and anti-gelling properties of AMSOIL Diesel Cold Flow and the increased horsepower and cetane of AMSOIL Cetane Boost in one convenient package. It is safe for use in all diesel fuels, including biodiesel. Diesel Injector Clean (ADF/ADFP) removes performance-robbing deposits from diesel fuel injectors to help restore horsepower and improve fuel economy. The cetane number of diesel fuel up to eight points for maximum horsepower, increased fuel economy and easier starts in all diesel engines.

Powersports

Small Engine

AMSOIL PI Gasoline Additive only $5

Promotion: AMSOIL P.i. for $5  Effective Dates: Feb. 25-March 10, 2026  Promo Code: PI226  AMSOIL P.i. is a potent gasoline performance improver with concentrated detergent that aggressively cleans stubborn, power-robbing deposits from injectors, valves and the combustion chamber. Effective in port and direct injection systems. Bottle compatible with capless fuel systems. Cleans entire fuel system in one tank of gasoline. […]

AMSOIL Synthetic Dirt Bike Oils

AMSOIL Synthetic Dirt Bike Oil delivers consistent clutch feel and outstanding gear protection in four-stroke dirt bikes, providing riders the confidence they need to maximize their performance on the trail and at the track. Consistent Clutch Feel Clutch slippage or inconsistent clutch feel can prevent dirt bike riders from riding as fast or effectively as they […]

AMSOIL PI Gasoline Additive only $5

Promotion: AMSOIL P.i. for $5  Effective Dates: Feb. 25-March 10, 2026  Promo Code: PI226  AMSOIL P.i. is a potent gasoline performance improver with concentrated detergent that aggressively cleans stubborn, power-robbing deposits from injectors, valves and the combustion chamber. Effective in port and direct injection systems. Bottle compatible with capless fuel systems. Cleans entire fuel system in one tank of gasoline. […]

How Gasoline and Diesel Lubricants Work

A lubricant’s primary functions are friction and wear reduction, but lubricants also play other important roles in an engine. To better understand specifically how lubricants work, it’s important to understand why they’re used, what kinds of lubrication exist and what specific applications require lubrication. The Seven Functions of Lubrication A lubricant must satisfy seven functions. […]

Commercial / Retail Businesses

COMMERCIAL BUSINESS If your company uses lubricants in your business processes like company cars and truck, equipment, heavy duty machinery or on the farm you may qualify as an AMSOIL Commercial Account. The AMSOIL Commercial Account enables you to purchase AMSOIL Products at wholesale commercial prices. AMSOIL Inc. also extends credit to