Quote:
Both times that I went to NYC (780 Miles) using Supertech Syn in my S-10, I returned to feel a rough idle. The moment I changed the oil, a smooth idle returned. Prior to those two trips, I used Castrol on trips to NYC & no rough idle afterwards. Now that S-10 sees Platinum with two free OCIs next - due to 10 quarts of free Maxlife synthetic... via their rebate plan early this year.
I do a ton of mountain climbing on those trips. The Supertech can't seem to take the stress I guess. My Colorado's been to NYC afew times with Mobil 1 and VSOT on-board. Not a trace of consumption from that vehicle -- yet I'm changing to another brand next due to the Group III claims. Amsoil, Schaefers or GC will be next.