Thanks for all the feedback. There are alot of know-it-alls.. If I knew it all I would not have asked. I have made up my mind.. I will run premium, because I don't want to chance hurting my brand new 80k SAV. That said, I got 4 Private message from people that did not want to be part of the "public" discussion that say they run regular in their X6 with no problems or ping. So for the extra 6 bucks.. I will use premium.. it was JUST a question as I have a very knowlegeble friend in fuel production (while it is aviation fuel, 100LL) he knows alot... and he explained that motor fuels are "virtually" all the same.
