$150 of wleding and de-warping later, I'm about to install the repaired oil pan on the 300SDL. (I'll post photos later). I had to clean off a LOT of black RTV sealant - no fun. The machine shop thought they got the pan "pretty flat - the bolts should pull it up the rest of the way".
So, I think I need to use a sealant - the question is, black RTV or Hylomar??? -- OK Don, KD5NRO Norman, OK "If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy." -James Madison '90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager