I am coming off my old truck, 2005 F-250 in sig, with a 170k miles on a great running 6.0 so I know what is out of the norm. My current rig, 2005 f-350, has been acting out of the norm. I picked it up for the 350, and the crew cab, was really a hard decision to get rid of a perfectly running 6.0, but this one has a warranty. Both are and were stock trucks too. Recently I noticed the degas cap has been slowly relieving pressure when I shut the truck off, and has coolant residue on it, nothing like it "puking". You can slowly remove the cap and vent the pressure out and the coolant level rises. Yesterday I noticed when you first start the truck and are driving down the road not on the highway yet, coolant temp about 160 deg, the heater should be warm, but its cold, no heat at all, when the truck is stopped until you get on it again. Once up to full temp 190, its fine.
Now those are my symptoms. My delta is about 8 degrees tops at highway, 186ECT and 194EOT. EGR Valve has been replaced. Doesnt really look like im loosing coolant, and exhaust isnt white or wet.
It looks like after all the threads I read, its probably head gaskets. I am not too worried because of the warranty. If it is, I am going to want them to put in studs, but the question is, can the techs (other than ones on here) be trusted putting in studs correctly aka, torque setting? My biggest concern is I have a 850 mile round trip (425 one way) to my dads house Wednesday for the holidays, should I be driving my truck down there??? Thats what I really need your opinions on! Thanks guys!