Thanks for the reply, Bill. I'd love to save some $$, but I lack the know-how, freon license, or the tools to do this type of work myself. I doubt whether my shop would honor their one year warranty on repair work if I brought my own part, and considering the $135 for R12 (ouch!) and the $150 labor charge, I was just wondering whether the part number is correct for the R12.
Robert W. Roe
1984 300SD 170K mi