I love BMW Seattle. they are great. Who was your service Advisor there? I usually deal with Tom. He is a great guy. Good luck and let us know the final result. I too have a 2008 M3 6 Spd. Mine has only 5,000 miles on it. I need to drive it a bit more, I know...
so far, not a single problem. I did get an early/late oil change at Seattle BMW last week and I got a 328 too. I didn't really care much for it, but it was good enough for a loaner car.