Starting a new thread as I didn't want to hijack OP's thread anymore than I already have! edycol posted an easy way to check engine coolant thermostat performance. I wasn't aware of this technique, decided to check it out, see attached graph. I monitor engine coolant temperature quite...

Hi guys, I used to down shift to slow down my previous manual car (especially when down hill) and now, I don't now if it is BAD that I do the same thing to my F30 328i auto transmission? Any thoughts? Thanks!

Just had the transmission serviced. However, it continues to have "Jerky" downshift while slowing down. Has anyone encountered this situation, and any ideas on how this might be fixed. Thanks!

Hi i am new member;) i got my dream 2005 525I a couple weeks ago in AS IS No warranty deal it is perfect and like new; except one issue :thumbdwn: when it come to stop the transmission jerk down shifting from the second and the firs gear all the time. i took it to AAMCO Renton /WA they said...

This question is for the driving/racing guys... When you come to a sharp turn and are in say 4th gear, and are going to downshift prior to entering the turn and determine that you will be in 2nd gear upon exit. Would it casuse harm to go directly from fourth to second (rev-matched...