Many people on this site who use AMSOIL are already preferred customer members. It's just a wholesale buying group and allows you the best price(dealer) price possible on the entire AMSOIL product line. Here is a link the my page explaining the program:
http://www.thesuperiorsynthetic.com/AMSOIL_preferred_customer.html

If this interests you, you can set it up all on your own, BUT contact me first via email, PM, or phone. I have one other thing to inform you on that might also interest you, before you sign up.

Heath