checking for cracked head or bad head gasket..

I see, but I still think its not that because I would have had milky oil from the start right?

I would think so...unless when It was cycled just enough and began cracking.

this is reaching, but thats all thats left...

if the decks were sloped diff directions on the block, the intake will always leak.jmo

these are all guesses, so please...no one run with this cause we don't know for sure and not being there working on the car makes this very tricky.