3280 miles on my X3. Quite frankly, this "lifetime fill" concept by BMW, et al is primarily a market-driven idea that got legs about the time manufacturers began covering normal maintenance for 4 yrs/50K miles. Prior to that, frequent fluid changes were encouraged, of course at the expense of the owner - not the dealer. Certainly lubricants have improved, but the basic result of break-in is the same - metal shavings in the lubricant.