Fellow listers - I'm about to replace the oxygen sensor on my 5kcstq and my wife's ovloV 240. Is a special wrench necessary for this? I see that you can buy a slotted socket wrench for the job or a special crowfoot-style wrench for VWs (see http://www.rapidparts.com/Pages/vwc020v.html). Any recommendations? Thanks, - Wallace '87 5kcstq 166k