http://www.amsoil.com/video/AMSOIL_Information_Series_Videos.aspx
I find it a bit hypocritical though coming from a company that touts the 4-ball wear test as superior wear performance. But kudos to Amsoil for exposing this joke of a test.
I find it a bit hypocritical though coming from a company that touts the 4-ball wear test as superior wear performance. But kudos to Amsoil for exposing this joke of a test.