B. S. My mason bought a brand new 6.0 dump from a dealer in Mass. on the way home from the dealer it blew a head gasket . they put him in a motel till they could switch over the body and gave him another new one. That truck blew a head gasket 5,000 miles after warrenty was up .
his father bought one head gasket blew at 50 , 125. and 200 all service was done at a ford dealership religously. They were both early 04 and 05 which is known for being extra crap. All the coolant changes in the world ain,t gunna make up for the lack of head bolt's.
Everyone I work with that had a 6.0 that told me how much better their truck was compared to mine wound up blowing their engines . That number is 27. All stayed on top of their maintence . Except for 1 he just totally destroyed his. But belive it or not his lasted 275,000 miles.