Full Synthetic Oil | Synthetic Motor Oil for Cars and Trucks | AMSOIL
NEW AMSOIL OE Series
Learn More

Devoted to Protection

Car and Truck Protection

Whether it’s your dream-machine, a work-in-progress or a vehicle that simply gets you from point A to point B, your vehicle is part of who you are. You’ve poured your heart into it, adjusting and refining every detail. Now pour in a motor oil designed to preserve the vehicle you treasure.

We specialize in developing full-synthetic lubricants engineered to deliver exceptional wear protection, maximum fuel economy and clean engine parts. We are Devoted to Protection.™

Wear Protection

Exceptional Wear Protection


AMSOIL Signature Series Motor Oil provides 75 percent more engine protection against horsepower loss and wear than required by a leading industry-standard*.

*Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
Learn More
Turbocharger Protection

Better Turbocharger Protection


AMSOIL Signature Series Synthetic Motor Oil handles heat so well that it protects turbochargers 72% better than required by GM’s dexos1® Gen 2 specification.*

*Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
Learn More
Engine Builders

Engine Builders and Gearheads Love AMSOIL


"If you have a car that you really love, you want to take care of it. That's why I recommend AMSOIL."
~Daniel Boshears, Engine Builder

See Testimonials
Extended Time

Peace of Mind to Drive Longer Between Oil Changes


Complete protection that fits your schedule. Reserve protection is built into every quart of AMSOIL synthetic motor oil, providing you with peace of mind beyond 3,000 miles.

Learn More