Thanks, MB DOC and Patrick. I guess I'll just go to the dealer and get it done there.

Also, if you could help me with the other question I had - my tech asked me to just remove the cat converter heat shield, as it was rusted and rattling. said there is another heat shield on top, so it won't make a difference. Shall I get it removed - would it cause any heat damage? I rarely drive more than 30 minutes at a stretch.

Thanks a lot.

Again, its a 85 190E 2.3