Why is oil coming out of these?

Another issue I had with the one I had was coolant would seep out of it. It was porous in the rear, back where the rear collant passage block off was. It leaked outside of the crankcase and would just come right through the aluminum and run down the back. That was the last straw and it was replaced with an Air Gap.

Maybe you have a similar issue although I can't imagine why oil would be under any great pressure there...