I have a 4.6is X5 from 2003 with 30,000 miles on the clock, when cold it exhinits Piston Slap (confirmed by the dealer) and it seems to go away when warm, I am not happy as it will run out of Warranty eventually. The dealer says it is not bad enough to repair under warranty, I disagree, has anyone else has this experience?

Regards, Geoff.