Before I swapped engines in my 240D a couple of months ago, 2nd gear was grinding quite a bit, and sometimes even 3rd. A few things I did to alleviate the problem :

1. Adjusted the new anti vibration t-mount tight against the bottom of the engine.

2. Put some fresh Redline MTL in the transmission.

3. Changed the rubber bushings on the transmission levers.

Not only have I been able to shift without any grinding, it actually feels like it wants to go into second. Hope this works for some of you.

Otto
'79 240D 4spd

MTL made my 2 and 3 shifts grid more often.

Redline D6 ATF is actually the correct fluid to use.

Mine never grinds (knock on zebrano)

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Been having the 2 to 3 shift grinding once in a while. Didn't happen till I changed the oil with Dexron ATF fluid. Was kind of milky looking so thought it should be changed. Guess that was a mistake.

So we have one pro and one con for Redline MTL and a pro for Redline D6. Any other suggestions I could try? Where do you buy Redline oil?

I thought some manual transmissions ran on heavyweight gear oil rather than thin ATF... I don't know for a fact if this is true with Mercedes transmissions or not.

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

Grinding == syncros going bye bye. Double clutch, deal with it or rebuild the tranny. You can optionally just put a new tranny in. I am collecting spares as the engines tend to outlast the tranny.

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42