Originally Posted By: mva
For high oil consumption try a different oil. I have had success with Castrol Syntec 5W40. This oil meets BMW LL98, as required for my BMW's engine.
I recently purchased a used 2000 M Roadster with the 3.2l S52 engine. It was using scary amounts of oil (approx 1 liter in 1000 km). These motors are known to use lots of oil. I dumped the old oil and put in 7 quarts of Castrol Syntec 5W40 and BMW filter.
So far the oil level, on the dip stick, is down less than 1/16" after 800km of hard driving with lots of full throttle blasts up to the redline. I am careful to check the oil in the morning before starting the car. If you check immediately after stopping you can get a false low reading. The BMW manual recommends waiting 5 minutes before checking the oil.
The motor also sounds noticably smoother with no noise on cold starts.
I would have to agree with you there on that oil, but I'm thinking the discussion here was about Redline WW?