Sure are alot of MB failures. Do any of you remember if you ever had a period of time when you were dealing with engine temps running higher than what you thought was normal.
I know MB says you should use their tranny fluid, but I believe the old school you get what you pay for (most of the time).
Synthetic ATF is in my opinion better insurance at best as you have a little bettter heat protection and superior additive formular.
Any transmission run with high engine temps (especially during the summer) is sure to cause problems down the road.
Since the cost is so high just for the fluid 5 to 7 dollar range, most people consider this to high, but I think your transmission will know the difference. No science just experience.
1989 420SEL 105575 miles
1990 Chevrolet E-Cab C-1500
1989 Olds Toranado Trofeo'