2005 F250 Water in Oil

[kawikx724]

I am getting water in my crank case oil (2005 F250) and cannot figure out even where to start but I already did new Oil Pan/Mid Section Gaskets and Powerhead Gasket. I have read about the poor oil pump seal design on the 2000-2001 115's but I am wondering if the design is similar and could be my issue. I also read about thermostats causing a similar problem yet I cant figure out how. My compression is perfect and the plugs are clean (no sign of head gasket issue or water in cylinders). The motor was never overheated. It still runs flawlessly and I can change the oil and idle the motor for an hour or so and not see much water in the oil if any. If I run the motor hard I can notice the water in the oil after about 15 minutes of running. I am not to sure where to go next with this thing without guessing and unfortunately its gonna be an expensive one I am sure. Thanks in advance for any help here.

-Kevin