I used some white lithium grease as per instructions from my Haynes manual, and I must say my throttle linkage is working better. The throttle linkages were kind of hard to pull off in some places, they were almost rusted together! So, after using the grease and putting everything back together, I have a smoother acceleration rate, and my kickdowns are smooth and not jerky now. It feels even better to drive it now. I'll put it on the SD as well.
-Joe

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.