I have an oil leak that accumulates where the trans bolts to the engine. THis weekend I degreased everything, started it up, and got underneath it to watch the leak. The leak is definitely coming from where the trans mates with the engine. I'm assuming this is the rear engine seal that is leaking. Do you all agree? Also, how hard is it to replace? It's the 4.0, 4x4, AT, with 186k on it.