Originally Posted By: 02Pilot
At 120k miles, I can almost guarantee that you have a leak at the valve cover if it hasn't been changed at some point. The oil filter housing gasket is probably leaking as well. Look carefully around the front of the engine above the air conditioning compressor, and from below as well.
I looked everywhere. Wouldn't you think that with a leak that uses 5 qts in 6000 miles I would see a spot in the driveway?... no spots.
I have heard that other owners of the M54 engine are experiencing anywhere from 1 qt in 1000 to 1 qt every 3000 when the engine gets older.
I'm not going to incure any repair cost that I can tolerate with a few qts of oil unless it becomes excessive.
Is there something wrong with M1 0w-40, It's spec-ed for this car?