Original post here.
So I figured my transmission was gone and I was in for a huge bill. I had just done some 10,000+ lbs towing and figured my tranny was destroyed. I parked it and walked away in disgust.
Today I threw two quarts of fluid in and amazingly it ran like a champ. Im going to change it all out this weekend.
Moral of the story: check your fluids folks!
Seriously, this. I've read that the bell-housing seals in that generation of F250 are for shit, might be a good place to start looking.