Originally Posted By: buster
Valvoline, Joe Gibbs, Amsoil, Redline and probably many others. Different additives often come from multiple suppliers.
Does Lubrizol make additives for their entire line of oils (synthetic, blend, and conventional)?
I'm asking because I'd like to try a quality full synthetic with Lurizol in it. So far I have used nothing but M1 5W-30 and PP 5W-20/10W-30, which don't use Lubrizol's add pack.