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.
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.
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.
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
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.