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Why Did We Reformulate Signature Series ...

Better oil more power

Why Did We Reformulate Signature Series Synthetic Motor Oil? Local Sioux Falls note: We are reposing this article from last fall as it is important to realize the changes coming and how these enhancements will only add to the performance on older vehicles too. AMSOIL’s Signature Series likely already exceeds the future API specification which […]

New Motor Oil Specs are Coming

LSPI Chart low-speed pre-ignition

New Motor Oil Specs are Coming Josh Kimmes|May 02, 2017 9:11 AM As engine operating conditions grow more severe, so do the demands placed on your motor oil. New engine hardware such as turbochargers, direct injection and variable valve timing (VVT) place increased stress on your engine oil. You may find yourself asking, why do […]