As explained above: I had to remove the trans. to fix the leak, either way, and if I could find the cause of the noise while I had it apart, all the better.

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'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".