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Signature Series Motor Oils

  • 75% more engine protection against horsepower loss and wear.

  • 50% more cleaning power vs. AMSOIL OE Motor Oil

  • Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.

  • 28% more acid-neutralizing power than Mobil 1.

  • Trusted by professional engine builders

  • Guaranteed protection for up to 25,000 miles or 1 year

Complete Synthetics offers exceptional service

  • AMSOIL Signature Series is fortified with a heavy treatment of detergent additives, delivering 28% more acid-neulralizing power than Mobil 1* and helping engines stay cleaner, longer.1

  • Protects Against Engine Wear

  • Protects Pistons from Low Speed Pre-Ignition

  • Protects Turbochargers

  • Maximum Cleaning Power  to Battle Sludge

  • Trusted by Professional Engine Builders

  • Trusted by Professional Engine Builders

* All trademarked names and images are the property of their respecive owners and may be registered marks in some countried. No affiliation or endorsement claim, express or implied is made by their use.

1 Based upon independant testing of AMSOIL Signature Series in Sequence IIH Engine Test )ASTM D8111), required by the ILSAC GF-6 and API SP Specications.

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