I'll keep a close eye on this as the BMW N62B48 motor has a "known weakness" in that a coolant transfer pipe that runs in the "V" of the engine under the inlet system can start to leak from the "O" rings that seal the pipe to the cylinder block: there are lots of posts about this on US BMW forums. Water dribbles down on to the garage floor.
You are scaring me... Let me follow this while I keep my fingers crossed.
