If your picture was from the opposite angle, you would see the large opening in the grille. That opening allows access to the torque converter drain plug. The torque converter is the part you see inside the grille. With a bright flashlight you might be able to look between the torque converter and the front of the tranny housing for leakage as described by ILUVMILS.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.