The motor mounts on my W126 560SEC have been changed at 49k and at 100k, I am now at 118k.

Your W123 CD has 220k on it, so perhaps you could check your records to determine when they were last changed. If you don't know, or they never have been, it may be that they are shot and should be changed.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)