Quote Originally Posted by whitcomb View Post
no opinions on running royal purple yet?
The place I buy my Royal Purple oil is a speed shop that opened in 1961. The guy I bought my last case of oil from said he likes the Royal Purple for the engine but uses Amsoil in his transmission. I wished I had more info other than his preference. He has an old muscle car so what he percieves as working well for him may not apply to you.