If/when I rebuild the tranny, I fully intend to switch to synthetic ATF. However, I may need to reseal the tranny in the not-too-distant future. Would this also be an opportune time to make the switch, or are there internal parts (i.e. something other than the seals) that might be adversely affected by the synthetic ATF?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

i use mobil one in our 124's .....no problems... i switched when i got the cars... well over 100k... don't know what was in there before, and don't care.

Synthetic tranny fluid is good bang for the buck since it stays in there for 30k

the cars shifted fine before the switch..and they shift the same way now.... i am looking for heat protection more than anything else... oh... and 250k out of the trannys.

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


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