That's because the car was initially a lease.
![laugh.gif](/proxy.php?image=http%3A%2F%2Fwww.ezboard.com%2Fimages%2Femoticons%2Flaugh.gif&hash=a7cd657a88b2816618cd293da089fa36)
BTW me thinks that's an E46, Dayday! SMH I came in here to see an E36 sitting on them 10s.
I'm not sure what the oil change intervals are for BMW's but I know in my manual for my car it says once a year or every 13,000 miles.