What exactly is the best additive if their is one? I understand that most oils use moly, and some are still claiming to formulate oil from PAOs (well specefically Amsoil). My buddy who is a mechanics assistant raves about this additive called Lucas that he mixes with Castrol. Royal Purple aparently uses moly, but I doubt that explains the odd change in color? Redline packs their oil with moly but their UOAs arent all that impressive, especially when relating to LDIs. What are the other normal additives or pieces that I am missing? I tried to cruise BITOG and got terribly lost. I guess I am out of whack with my oil knowledge.