Protect Your Engine

Blowing the doors off industry standards. AMSOIL Signature Series Synthetic Motor Oil...

Delivers 75% more engine protection against horsepower loss and wear than required by a leading industry standard¹
Handles heat so well that it protects turbochargers 72% better than required by GM’s dexos1^® Gen 2 specification²
Achieved 100% protection against LSPI³

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Why choose amsoil

Extended line of lubricants for just about anything with an engine
Product performance that blows the doors off industry standards
Confidence of using products that offer field- and dyno-tested quality
A company of gearheads, racers and riders that shares your passion for performance
Formulated, blended and packaged in the USA

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Engine Builders 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 and Chief Mechanic at the Wellborn Musclecar Museum

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Diesel Enthusiasts Love AMSOIL

"In comparison to just running some of the standard fluids, we see better heat distribution in the bearings and in the steels on an extreme application."

~ Lavon Miller, Firepunk Diesel

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Get Better Engine Protection - Tell Us What You Drive

¹Based on independent testing in the ASTM D6891 test using 0W-20 as worst-case representation.

²Based on independent testing of AMSOIL Signature Series 5W-30 in the GM Turbocoking test.

³Based on zero LSPI events in five consecutive tests of AMSOIL Signature Series 5W-30 motor oil in the LSPI engine test required by the GM dexos1^® Gen 2 specification

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