39-Ford-Tudor

Ford Flathead V8 Hello all here on the forum. I am hoping to get some advise. My 1939 ford with the 221 ci. V8 runs pretty good. The issue I am having is when we drive the car at highway speed I am getting engine oil mixed in with my radiator coolant, but no coolant in crankcase. Just driving car at city street speeds this does not happen. I can not seam to find much in the net about this. I can find lots about coolant getting in the crankcase not not my problem. Please help. Sent from my iPhone