AMSOIL product guide
AMSOIL Snowmobile Oils & Maintenance
Spend less time second-guessing your next service. Find the correct engine oil, chaincase lubricant and seasonal essentials for your sled.
Trey Campo · Independent AMSOIL Dealer #5573391 | Spokane, Washington · Personal product guidance
Start with the engine. Then service the rest of the sled.
Choose two-stroke injection or premix oil for a compatible two-stroke engine; choose the specified four-stroke sump oil for a four-stroke. The chaincase, suspension and grease points have separate requirements.
INTERCEPTOR or DOMINATOR?
AMSOIL positions INTERCEPTOR as its all-around snowmobile choice. DOMINATOR is a racing formula to consider for appropriate modified or competition engines. Confirm the recommendation for your sled and how you ride; the products are not interchangeable simply because both are two-stroke oils.
Keep your model, year and engine details handy. Open the AMSOIL application guide before selecting your products.
Choose your product
Match the grade and application, then open the exact product page for current specifications, package choices and ordering.
AMSOIL INTERCEPTOR® 100% Synthetic 2-Stroke Oil
For compatible high-performance two-stroke snowmobiles, including modern injection systems. Start here for everyday trail and mountain riding; confirm the current application instructions.
AMSOIL 100% Synthetic 2-Stroke Injector Oil
An injector-oil option for applications listed by AMSOIL. Check your engine and injection requirements before selecting it; the INTERCEPTOR and Injector Oil formulas are different products.
AMSOIL DOMINATOR® 100% Synthetic 2-Stroke Racing Oil
A two-stroke racing formula for suitable high-performance and modified engines. Match it to the engine builder’s requirements and intended use; competition protection is a different selection decision from routine trail riding.
AMSOIL Formula 4-Stroke® Powersports 0W-40 Synthetic Motor Oil
0W-40 engine oil for compatible four-stroke powersports applications. Confirm the specified viscosity and manufacturer’s service schedule. Four-stroke sump oil is not two-stroke injection oil.
AMSOIL 100% Synthetic Chaincase & Gear Oil
For compatible chaincases and gearcases. Check the lubricant specification and fill quantity for your sled; engine oil and chaincase lubricant are not interchangeable.
AMSOIL Synthetic Water-Resistant Grease
For grease points that call for a compatible water-resistant grease. Check the manufacturer’s grease requirements and compatibility with the grease already in service.
AMSOIL Shock Therapy® #5 Light Suspension Fluid
A light suspension fluid. Use the shock or fork manufacturer’s specified fluid and service procedure; do not choose a grade solely by riding temperature.
AMSOIL Shock Therapy® #10 Medium Suspension Fluid
A medium suspension fluid. Confirm the required fluid for your suspension; a heavier grade changes damping and is not an automatic upgrade.
AMSOIL Quickshot® Gasoline Treatment and Stabilizer
A gasoline treatment and short-term stabilizer. Follow the current cleanup or maintenance dose for your tank size; fuel treatment does not replace engine oil.
AMSOIL DOMINATOR® Octane Boost
An octane-boosting gasoline additive for suitable applications. Check the current label, fuel requirements and use restrictions before adding it to your sled.
AMSOIL Gasoline Stabilizer
For gasoline storage preparation. Follow the label dose and equipment maker’s storage instructions; choose a storage plan before putting your sled away.
AMSOIL Power Foam® Carburetor and Induction-System Cleaner
A carburetor and induction-system cleaner. Verify the application and label instructions before use, especially around sensors and coated components.
Clear answers before you order
Can I use four-stroke oil in a two-stroke injection tank?
No. Select the oil type required for that engine and lubrication system. Follow the sled manufacturer’s instructions for injection or premix use.
How often should I change snowmobile oil?
Use the schedule for your exact machine and the selected product. There is no single mileage interval for every four-stroke sled, chaincase or suspension component.
What should I do before seasonal storage?
Follow the owner’s manual for fuel, engine, chassis and battery preparation. Use the seasonal equipment guide to organize the job, then verify each product’s treatment instructions.
Reviewed October 25, 2026 by Trey Campo. Product recommendations and availability can change. Current snowmobile catalog · INTERCEPTOR and DOMINATOR guidance
Make your next service easier.
I used AMSOIL in my personal vehicles, equipment and commercial lawn-care equipment for more than 10 years before becoming a dealer. Tell me what you operate and I’ll help you find the right starting point.