before i go and jack up my '93 525i touring i thought i'd ask if anyone knows the location of the O2 sensor. I have the bentley manual but the conveniently left out the location on the '93 models. thanks in advance! Oh yeah, Im a fairly inexperienced mechanic (mostly maintenance and minor body work). I found a great deal on a full set of Bilstein shocks. should I leave this job to a pro? I also don't know if I have the self leveling shocks or not. anyway to easily find out? I've searched around but it's hard to find info about the touring models.