Have 2012 X5 5.0, do not have a dip stick, my only gauge for the on screen oil level is the vehicle information center. The question is when it tells me oil is low I top it off with a quart, this fills up the green bar to the top but I thought I read on here that it’s actually 2 quarts, and I could put 2 quarts in...is that true.? I do not want to overfill but again no dipstick to check the actual level.