B19BAL : Read the bit about your M5 eating loads of oil.

Not sure what M5 you have, but my buddy as a late V8 M5 (paid 22k for it about a year ago) and it had just had a BMW Replacement Engine fitted due to high oil consumption........... All under a recal warranty.

Might be worth checking it out with BMW. He was told that anything over 1 litre of oil consumption a month, and BMW will fit a replacement engine.

It's something to do with the Nickaseal Engine bores that were done on the early engines and they had a problem with them, so replaced many engines free of charge.......

Check it out with BMW.