I remember in a previous post that tranny fluid intervals should be done at approx. 100K. I believe it was one of the frequently visiting techs here that mentioned that, maybe Gilly, Don't remember...
These are pretty sophisticated transmissions and rather durable. I've heard of people with other E300's on this board with 200, 300K and no mention of tranny replacement. Not saying that they are bulletproof though.
Just my $0.02
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'97 E300
'99 E300
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