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  • Signature Series 0W-20 Synthetic Motor Oil

    • 75% more engine protection against horsepower loss and wear.1
    • 50% more cleaning power vs. AMSOIL OE Motor Oil
    • Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
    • Trusted by professional engine builders
    • Guaranteed protection for up to 25,000 miles or 1 year
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  • Signature Series 0W-30 Synthetic Motor Oil

    A New Level of Motor Oil Technology

    • 75% more engine protection against horsepower loss and wear.1 • 50% more cleaning power vs. AMSOIL OE Motor Oil • Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification. • Trusted by professional engine builders • Guaranteed protection for up to 25,000 miles or 1 year 1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification. 2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
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  • Signature Series 0W-40 Synthetic Motor Oil

    A New Level of Motor Oil Technology

    • 75% more engine protection against horsepower loss and wear.1 • 50% more cleaning power vs. AMSOIL OE Motor Oil • Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification. • Trusted by professional engine builders • Guaranteed protection for up to 25,000 miles or 1 year 1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification. 2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
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  • Signature Series 5W-50 Synthetic Motor Oil

    A New Level of Motor Oil Technology

    • 75% more engine protection against horsepower loss and wear.1
    • 50% more cleaning power vs. AMSOIL OE Motor Oil
    • Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
    • Trusted by professional engine builders
    • Guaranteed protection for up to 25,000 miles or 1 year

    Order NowDone