Not Ranked
You may well have a bad seal. Another possible consideration, do you have excess/severe pressure in the engine putting undue force on whatever seals you have in place.
My engine is not an FE, but a 460, yet the same dynamic may apply. When I bought my car it was leaking notably at the rear seal. I had the inspecting mechanic replace the rear seal. It really had no effect, it continued to leak considerably all over the garage, etc.
I did my own research, and added a PCV valve system on the engine, which was not in place when I bought the car. From that day forward, never a drop from the real seal.
The PCV valve also significantly improved the operating characteristics of the induction/engine. It starts better, idles much smoother/better, and the crackling/popping/backfiring upon deceleration that I was experiencing, stopped.
Seemed like a little miracle drug! The improvements that system touted were impressive, and it didn't disappoint. I can only assume soemone removed it thinking it was emission control device that was bad thing for a performance car, maybe? At any rate, seems to have been what resolved the leaking issue on mine.
Brent
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