You can replace the piston assembly without removing the cylinder from the firewall. Messier that way, but if you pull the carpet back you'll be OK. Don't know if DeLorean vendors sell just the piston assembly alone, but both Autozone and Advance do. Ask for a *4 cylinder* AMC Eagle, Spirit, or Concord, 1980-1985 (6 cylinders used a different master cylinder, IIRC). #5939 is burning an Autozone assembly spec'd for a 1981 Spirit. Works perfectly. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, "rodney rael" <rodrael1@...> wrote: > > Hey all!. > > I had a clutch master cylinder leak, (oil under driver's side floor mat) it > would all leak out in about 1 week or thereabouts. Anyway, I was thinking > I was going to have to pull out the master cylinder and change and was > dreading that, but I use Marvel Mystery oil for all sorts of things and > thought I would use that instead, since it was in my trunk and I didn't have > any extra brake fluid. Not only did it work, but my leak stopped. > Cylinder has stayed completely full!... Clutch is working great!.. > > I don't know how long it will work but sofar so good.... > > Rodney > 3300 > 10544 > ------------------------------------ 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/