Authorized AMSOIL Dealer

Formulated, Blended, and Packaged In the U.S.A.

Tom Santell

Power Sport Oil

San Leandro, Ca


Amsoil Signature Oils Cleans Up The Competition

The total base number test (TNB) measures the additives in motor oil. The higher an oil’s TBN, the better its ability to neutralize contaminants such as combustion by-products and acidic materials. Higher TBN oils neutralize a greater amount of acidic material, which results in longer oil life and cleaner engines. AMSOIL has a large dose of detergents and additives to neutralize acidic contaminants and maximize the life of the engine oil. In tests conducted by independent labs, AMSOIL demonstrated the highest TNB OVER 8 other competitive synthetic motor oils. Read More about the TBN Test and AMSOIL Signature Series Synthetic Motor Oil here.