Don't think the OVP is the same problem (does it use one?) on the W210...

I think your transmission like my '94 uses regular ATF and not synthetic. The recommended change interval is about 30,000 miles. It is a cheap job even when performed by a dealer. Worth the worry factor IMO.

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles

I don't know. I assume 1996 and 1997's have one because the engine is a carry-over from 1993-1995.

I could be wrong, though. It wouldn't be the first time.

Just ask my wife.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".