(5) 1 Quart Bottles of Amsoil Full Synthetic Signature 10w30

AMSOIL SIGNATURE SERIES 10W-30 100% SYNTHETIC MOTOR OIL

Product code : ATMQT-EA

5 star rating Read 6,569 reviews

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.

28% more acid-neutralizing power than Mobil 1.3

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 using the ASTM D6891 standard test.

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

3Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896.