1990 2.3 coupe: Well appears my oil pressure sending unit is leaking. I'm new to the 2.3 forum but long time Stang.net guy. I'm pretty sure it's the sending unit if it's mounted on the rear of engine up high on the block. Just looks a little different than I'm use to seeing. What is the procedure for getting the old one off? What size wrench?? Looks pretty dang hard to get at. Any help is most appricated. Local parts store said the replacement is a whole $10. Guess I can afford that. Dang thing is leaking softball size puddles now when i turn car off.