JCL, that is excellent information. Thanks! I like that you (the owner) are the consistent variable in all 5 of your inline 6s. I won't be as concerned when mine comes up short. As it were, I was going to blame BMW first, for letting people get complacent with a 15,000 mile oil change recommendation, and the previous bonehead owner second, who let it go 2000 miles over that TWO TIMES!!!
Ugh, makes me sick.