
Results in the test are a good indicator of how well an oil will perform in the real world.

Signature Series maintained horsepower and torque throughout a 125,000-mile test, even under the elevated stresses of a high-output 3.5L engine.

Signature Series delivered 2X better protection against volatility, helping reduce oil consumption, minimize top-offs and keep engines cleaner.

We discuss the next-generation Signature Series 100% Synthetic Motor Oil with AMSOIL Chairman & CEO Alan Amatuzio.