Raise car, slide under then tell us where its from. How can we help without knowing the source? Most Mercedes of this era had the dip stick tube screwed into the trans pan. They can become loose and because the fluid's higher than the tube, leak. They also have a drain plug on the face of the torque converter, that can leak, but rarely. Please do the bare minimum investigation before you ask for answers. At this point all we can provide is opinions.

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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.