Use genuine MB filter, Mobil one sybthetic 5-40 Euro formula, and change your cabin filters( behind glove box) this time or next. No leaks or drips no problem.
There is a real discussion at my dealer between the "guys", MB evidently passed on some info that since the nature of trans fluid is gritty it really does not wear. The head technician feels that it does more good to change it at 50/60, but the fluid looks good on some they have pulled down for other issues. It was interesting to listen to their views!