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AMSOIL Synthetic Motor Oils, Lubricants, Filters and Fuel Additives

AMSOIL Advanced Technology Delivers Premium Protection and Performance


Leading the Field in Deposit Protection

Testing proves AMSOIL Signature Series 5W-30 Synthetic Motor Oil provides more complete protection against damaging deposits than its competitors.

The push toward smaller, fuel-efficient yet powerful engines has driven the development of several key...


Help Preserve Your Engine’s Horsepower

Although you may equate engine wear and deposits with sudden, catastrophic engine failure, they are more likely to erode engine power and efficiency over time. Here’s how it works and what you can do about it.

Several factors cause an engine to slowly lose...


New AMSOIL Firearm Cleaner and Lubricant Provide Outstanding Benefits for Gun Owners

Protection and Dependability

Nearly one in three Americans owns a firearm, typically falling into at least one of three categories. Hunters typically own shotguns to hunt waterfowl or upland birds and/or rifles to...



Warm-up Your Vehicle Faster in Cold Weather - AMSOIL Coolant Boost

AMSOIL DOMINATOR® Coolant Boost is designed to reduce corrosion and significantly enhance heat transfer in cooling systems. One of the overlooked benefits of better heat transfer is much quicker engine warm-up in winter...


Octane Explained: Does Premium, High-Octane Gas Boost Performance?

A recent AAA report found that American motorists wasted $2.1 billion dollars in the last year buying premium gasoline for engines designed to run on regular gas.

The reasons why are likely due to the following misconceptions...


AMSOIL Next Generation of Synthetic Diesel Oils

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil and AMSOIL Heavy-Duty Synthetic Diesel Oil meet new API diesel soecifications.

The two new API diesel oil specifications focus on these five goals:

  • Reduced emissions
  • Improved fuel economy
  • Stronger...

How Does Extreme Cold Affect Lubricants?

Watch the video to see what happens when AMSOIL Signature Series Synthetic Motor Oil and a conventional oil are cooled to -40º. While the conventional oil fails to flow from the beaker, Signature Series remains fluid and delivers 36% easier and...


AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil Proves Itself in Top Three

After a full season of real-world riding, INTERCEPTOR completely prevented ring sticking, piston scuffing and exhaust-power-valve sticking in Arctic Cat*, Ski-Doo* and Polaris* snowmobiles.

During the winter of 2015/2016,...


Which AMSOIL Synthetic Snowmobile Oil is Right for Me?

AMSOIL snowmobile products deliver protection advanced enough to unleash the full power potential of any brand of snowmobile, including Polaris®, Ski-Doo®, Arctic Cat®, Yamaha® and more. Check out these guidelines for choosing the right oil...


Never Overlook This When Maintaining Your Snowblower

Snowblower maintenance can be distilled to one Golden Rule: Maintain your fuel system.

A snowblower that refuses to start is almost always due to a fuel problem. Preventing fuel-system problems starts in the spring prior to storage.


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