OK guys. You probably remember how much I disliked Mobil 1 in my 99 Grand Am GT, 3.4L V6. I didn't keep the vehicle long enough to give SuperSyn a try; trysynthetic was the only version I ever used in it. Long story short, it had piston slap so bad that people near by warned me I was about to lose my motor!
![[Eek!]](images/icons/shocked.gif)
Regular dino oils made it much much quieter. Well, I now have my 94 Corolla 1.8L, and I'm doing a lot of driving, and 3,000 mile changes on dino is getting to be a pain in the butt. Can you guys safely say that the new SuperSyn is really that much better than trysynthetic? More specifically, a question to Patman: Are LS1s that are known to be slappers, quieter with Supersyn than with trisynthetic, in the same viscosities? Also, I've noticed lately that UOAs reports are showing slightly less levels of moly. SS started out with around 80 ppm, now they are showing up with only about 60ppm. Can anyone address this? Should I give Mobil 1 a shot again, even though I had bad experience with it in the past? Thanks a bunch guys. I can get Amsoil from a neighbor who is a dealer, but I found Mobil 1 at Target for only $ 4.39/quart, which is a great price. Thanks again.