this is where you want to ask
http://www.x5world.com/
lots of tech articles and it's very active
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You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
Driving e82, e72, e85, R53 Gone but not forgotten..
1974 2002, many various 3s.