I'm a hardcore Amsoil user for over 25 years but I'm becoming intrigued by Schaeffer and every time I read about it I get more and more interested in trying it. Does anyone have any thoughts about why Schaeffer seems to hold its own against Amsoil? I never thought I'd use another oil in my luxury cars but Schaeffer is catching my attention and want to know if anyone else is noticing what I am?