AMSOIL Quickshot® Gasoline Treatment and Stabilizer
AMSOIL Fuel Additives
AMSOIL Quickshot is a concentrated gasoline treatment built for two-stroke and four-stroke powersports engines.
AMSOIL products
AMSOIL Fuel Additives
Gasoline and diesel fuel additives for cleaning, cetane, stabilizing, and cold-flow protection.
AMSOIL fuel additives
Buy AMSOIL fuel additives for gasoline and diesel engines, including P.i. Performance Improver, Quickshot, Gasoline Stabilizer, Diesel Cetane Boost, Diesel All-In-One, and Cold Flow for winter operation.
Order online, or save up to 25 percent on every order by joining the AMSOIL Preferred Customer program for $20 USD per year. For local pickup, the order online covers the AMSOIL Dealer locator and how to find AMSOIL near you.
Add an AMSOIL Preferred Customer membership to the same cart to unlock up to 25% off qualifying products. Existing members can sign in, and qualifying orders currently over $100 can ship free.
Shop by Product Type
Start with a product family, then use the AMSOIL online lookup guide to choose the formula and viscosity that fits your application.
Quickshot
Diesel
AMSOIL Diesel 4-IN-1 Fuel Additive
AMSOIL Fuel Additives
Also marketed as AMSOIL Diesel All-In-One, is a year-round diesel fuel treatment that pairs detergency, cetane lift, lubricity improvement.
Diesel Cetane Boost
AMSOIL Diesel Cetane Boost Fuel Additive
AMSOIL Fuel Additives
AMSOIL Diesel Cetane Boost (ACB) is the standalone cetane number improver for diesel engines that need higher-cetane fuel than the pump provides.
Diesel Cold Flow
AMSOIL Diesel Cold Flow Fuel Additive
AMSOIL Fuel Additives
AMSOIL Diesel Cold Flow (ADD) is a concentrated winter cold-flow improver for diesel fuel.
Diesel Injector Clean
AMSOIL Diesel Injector Clean Fuel Additive
AMSOIL Fuel Additives
AMSOIL Diesel Injector Clean (ADF/ADFP) is a concentrated diesel detergent fuel additive built to clean modern high-pressure common-rail injectors.
AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive
AMSOIL Fuel Additives
AMSOIL Diesel Injector Clean and Cetane Boost (ADS) is a concentrated diesel fuel additive that combines the detergency.
Diesel Recovery Fuel
AMSOIL Diesel Recovery Fuel Treatment
AMSOIL Fuel Additives
AMSOIL Diesel Recovery (DRC) is an emergency diesel fuel treatment that dissolves the wax crystals that form when diesel fuel passes its cloud point.
DOMINATOR® Octane Boost
AMSOIL DOMINATOR® Octane Boost
AMSOIL Fuel Additives
Racing-grade fuel additive built for high-compression, turbocharged, supercharged, and high-output two- and four-stroke gasoline-fueled engines.
Gasoline Stabilizer
AMSOIL Gasoline Stabilizer
AMSOIL Fuel Additives
Long-term fuel-preservation additive built for seasonal vehicles, powersports machines, marine engines, and small power equipment that sit idle between uses.
Motorcycle Octane Boost
AMSOIL Motorcycle Octane Boost
AMSOIL Fuel Additives
4-ounce, motorcycle-specific octane booster formulated for four-stroke air- and liquid-cooled bikes.
P.i.® Performance Improver
AMSOIL P.i.® Performance Improver Gasoline Additive
AMSOIL Fuel Additives
AMSOIL P.i. is a concentrated detergent-based gasoline performance improver formulated for port-injected and gasoline direct-injection (GDI) engines.
Upper Cylinder
AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor
AMSOIL Fuel Additives
Gasoline fuel additive engineered to restore the lubricity that ethanol-blended pump fuel takes away, defend top-end engine surfaces against corrosion.