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Signature Series: The Measure Of Perform...

See how Signature Series scored vs Schaeffer's and Mobil 1

SIGNATURE SERIES: Brand comparison Testing – Viscosity In the NOACK Volatility Test, Signature Series scored far below the API limit for evaporation and proved it remains where it’s needed most – protecting your engine. Nearly 35 years ago AMSOIL became the first oil manufacturer in the United States to use the NOACK Volatility Test as […]

The Pinnacle of Performance

New Industry Leading 100% SYnthetic Oil to surpass engine tests no other oil can come close

The Pinnacle of Performance The new Signature Series Synthetic Motor Oil formulation builds upon its rock-solid foundation to offer enthusiasts a new level of engine protection. Signature Series Synthetic Motor Oil (ASM, ALM, AZO, ASL, ATM, AZF, AMR) Improving Signature Series was a challenge, but the results prove the new formulation blows the doors off […]