Spent three hours this evening changing both motor mounts and the transmission mount. Amazing difference in smoothness. If I had known it was going to be so quick, I would have done it a long time ago. The shaking at idle has been dramatically reduced, and gone is the clunk when shifting from Drive to Reverse. Just an FYI for anyone wondering if they should, or how difficult it is.

__________________
NOW:
1992 W140 300SD 217K total. 70K on 1st 3.5 "Rod Bender" 147K on 2nd - so far no oil consumption
THEN:
1985 300D 395K and running flawlessly when sold - loved this car
1977 Euro spec 300d with manual trans - total dog.