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Fuel Additive Ratio Calculator

Calculate the precise amount of fuel additive you need with our fuel additive ratio calculator.

oz pergal
Common AMSOIL Fuel Additive Ratios
AMSOIL ProductApplicationTreat RatioAdditiveFuel
P.i. Performance ImproverGasoline12 oz. per 20 gal12 oz.20 gal
Diesel All-In-OneDiesel8 oz. per 20 gal8 oz.20 gal
Diesel Cold FlowDiesel16 oz. per 80 gal16 oz.80 gal
QuickshotGasoline8 oz. per 6 gal (initial)8 oz.6 gal
Upper Cylinder LubricantGasoline/Diesel6.4 oz. per 25 gal6.4 oz.25 gal
Gasoline StabilizerGasoline16 oz. per 40 gal16 oz.40 gal
Diesel Injector CleanDiesel8 oz. per 20 gal (initial)8 oz.20 gal
Motorcycle Octane BoostGasoline4 oz. per 6 gal4 oz.6 gal
Diesel Injector Clean + CetaneDiesel8 oz. per 20 gal (initial)8 oz.20 gal
Diesel Cetane BoostDiesel16 oz. per 80 gal (max)16 oz.80 gal
DOMINATOR Octane BoostGasoline12 oz. per 15 gal12 oz.15 gal
Diesel RecoveryDiesel30 oz. per 30 gal30 oz.30 gal

AMSOIL Fuel Additives - How Do They Help?

AMSOIL In Action!

Hi, I'm Dave - a former Ford Truck/Automotive Engineer with 40 years of combined professional experience working with lubrication systems and using and promoting AMSOIL products. My trucks, heavy equipment, farm and powersports vehicles experience extreme use, and I use AMSOIL products in every single one. Enjoy the site!

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Fuel Additive FAQs

How much fuel additive is needed per gallon?+
The amount of fuel additive per gallon of fuel varies between different additives. Check the bottle to know precisely how much you need. For many (not all) AMSOIL products, it's recommended that 1 oz. of additive treats 2.5 gallons of fuel.
Is it worth adding fuel additives to a vehicle's fuel system?+
Adding fuel additives to your vehicles or equipment can help protect your machines against low quality fuel and improve performance. AMSOIL fuel additives have been rigorously tested and proven to fight corrosion, improve fuel lubricity, increase horsepower, and much more. AMSOIL Upper Cylinder Lubricant was tested and shown to deliver 18% more lubricity than Lucas and 20% more than Sea Foam. AMSOIL P.i. restored up to 14% horsepower based on third-party testing in a 2016 Chevy Silverado. And, testing AMSOIL Diesel 4-In-1 was shown to significantly improve lubricity in diesel fuels found all across the U.S., which results in improved wear protection.

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