As of this morning: 262,376 miles on the original fluid....

Routine service every 50,000 miles (as several posters do) would have cost an approximate total of $2000 by now. A remanufactured GM 5L40E with a 3 year warranty is $2400, so my breakeven will come at about 350,000 miles considering install labor-stay tuned!

2002 X5 3.0
2004 325i 116,000 miles