For those keeping score, there are two types of O-rings being considered here. I think that some of the confusion in this thread is caused by the fact that there are two - under the diff adjustment nut, and also common to the drive axle hub splines. The larger one under the Diff nut is the one that Rob was referring to. The smaller ones on each side that are common to the hub splines were the subject of another post in this thread. We have replaced many of the ones common to the hubs, and never the one under the diff nut. You can tell that these smaller O-rings are leaking by seeing traces of oil at the seam between the drive axle hubs and the end of the drive axle end housing on the inboard end. This can be another cause of oil found on the outside of the transmission around the drive axles. The other cause is, of course, the lip seals. Toby Peterson VIN 2248 "Winged1" DeLorean Motor Company - Northwest DeLorean Parts Northwest, LLC >Rob Grady doesn't even stock this o-ring because he says it rarely >ever leaks. ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/