How often should I change my oil?
I have a 2011 328i and i feel that the oil change schedules BMW has laid out are too far apart. Does anyone change their oil in between BMW's scheduled maintenance? If so how long till I do an intermediate oil change? 6K miles? 8K miles? Also, if I plan on doing intermediate oil changes, would I have to tell the car mechanic not reset my oil change schedule? Would BMW void my maintenance warranty if they found out?