Hey,i have a question about the AT on 320D e90.I red that the transmision oil must change on 80-100k kilometres.Is that true ? And i red that from BMW claimed that the transmision oil is ''lifetime'' and the change isn't necessary,but from ZF claimed that the oil should change on arround 60-80k kilometres.. hm .. ? Where's the truth here ? I'm afraid of this situation.I'm looking for 320d e90 163ps/177ps on 100-120k kilometres,should i change the oil when i buy the car ? hm.. ? pls help ..