The transmission inspection plate had oil dripping from it as described in earlier posts (mine is a 1994 2.3 L engine). Turns out that the oil was leaking from the oil sending unit and, to a lesser degree, the valve cover gasket. As reasonable as it is to do so, I suggest you replace the oil sending unit and see if it stops the leak. I only know what worked for me. There was also a slight leak from the firewall
side of the valve cover gasket, so I replaced that too. Bottom line: no leaks. On another related post, changing the oil sending unit didn't stop the leak. The person making those posts tried replacing just about everything imaginable; I wasn't willing to go that route and just got lucky.