I'm really suprised that no one on this site seems to be a big full syn oil fan. Why is that?? I was just reading the "flat cam" link. I realize that it's not used for break-in, but what about after that. I thought it was the greatest thing since sliced bread. I have a 460 BBC with about 500 miles on the Rotella I put in after the initial Rotella + GM EOS I used to break the cam in. I was thinking about going full syn this spring. Should I or not?? If no....then why?? Thanks guys!