all 300D owners (TD owners too) with the 617 and R4 A/C that'd be 79-85 I believe.
if you have an overzealous tendency, and installed, or got your car with insulation pipe installed on the suction line that crosses in front of your valve cover, GET IT OFF!@!
I just pulled a good cleaning job on my 83 TD, and found RUST and I mean MAJOR rust on the line nearest the power steering pump!!!!
I took some pics and will be posting them. but I had to get this out there!

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!