mines in the shop right now for the same thing.they are tearing into it today....will update with what the found.i bought a egr delete kit and new oil cooler...it was going in the shop last monday to have this work done.there was no sighn of any problem then the sunday before i stopped at a buddys house and one of the kids said........there is something leaking out of your truck.......looked over and oil/water was comming out degass bottle..never gave a sighn at all....

Sounds like the oil cooler.. If you do the work yourself, I found a nice procedure on how to flush the cooling system of all of the milkshake!

Tsb 08-23-1 6.0l diesel cooling system contamination flush procedure

Oil cooler is gone.

03 6.0 f550
 

radiator blew . after i changed it . it had transmission fluid in it . 3 radiators before the overflow had a hole spitting out coolant . now my question is . before taking it to ford to get my pockets drained , can any one direct me on the path of the problem? id like to get it done correctly . seems like no one here knows how trans fluid would mix . thanks:scare2: