Originally Posted By: Audi Junkie
...and the beat goes on. Funny, how all that professional experience amounts to nothing more than recounting the wording of the BMW owner's manual, verbatim. I've never know Doug to deviate from oem service practice. That's just how he is and I accept that. I'm not shure how relavent the discussion is to him anyway, do they even get the same oils as we do here?
Never the less, I'll submit that I have MORE experience running HD and SM oils in Euro cars than just about anyone here. See how that works?
Tweeking the Castrol oil selector, it seems to call for 15w40 HD in I-6 engines prior to 2001.
http://www.castrol.com/castrol/LubesSelector.do
FWIW:
Doug runs 0w40 in a car of his that spec's 5w40 IIRC, or it could be the other way around.
He and I went over running 5w40 or 0w40 in my Expedition that spec's 5w20. He recommended the 0w40, but said the 5w40 would be fine. It is running the 5w40 right now.
I know that Doug has extensive experience with Porsche and Mercedes, in fact he just returned from a trip to Germany, involving both companies. If relevant, I'm sure he will post up the details, something I am not going to do out of respect.
I am just saying this: Do not discount Doug's experience. Because he has made a recommendation that you feel is either vague or conservative, does not mean there is not significant reasoning behind it.