If you have the 722.6 trans (you should confirm), then use the special MB fluid/filter not Mobil 1 syn.

Drain plugs in pan and torque convertor will get 90%+, You need special dipstick tool to set final level accurately. Very important that you do. See DIY's for details.

Go to this site and plug in VIN. You'll get all your questions answered -- model, chassis, engine, trans, etc. . No guessing.

http://old.mbclub.ru/mb/vin/?lng=eng