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