[Culver Adams]

(someone also suggested oil could be coming from distributor seal)

Hi Aphaynes,

Experimenting with alternatives to original road draft crankcase vent tube a 1965 Chevy 235 I6 engine, I closed off road draft crankcase vent tube. There was enough pressure in the crankcase to blow oil (like a gusher) up the space between distributor shaft and the vertical bored hole in which it is placed. The oil left the engine and went out to the world between the engine block and distributor flange. I opened up the crankcase vent again and, of course, the oil stayed where it belonged: thank you, gravity.

Suggests to me your clogged crankcase vent may be related to gushing oil.

Hope this helps, Here's hoping for a quick fix, and Regards,

Culver