All MB auto transmissions thru 1995(4 & 6 cyl thru 1996) require fluid & filter changes every 30K miles.
The later cars use special synthetic fluid that can last 100K miles BUT should be serviced every 50-60K miles.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)