water pump or head gasket
 

Ok so I thought I needed a head kit my truck runs and drives great till I run out of coolant no smoke doesn't get hot I run out of coolant I lose my turbo. Pull over fill it up I'm back to normal I just noticed I have sweat marks on my water pump pulley. Need some input here

05 F350 6.0

sounds like a water pump issue. What about filling with water and then run the motor and watch for leaks?

Haven't tried it takes a good two hours to run it out

should not take but a few minutes to see it weep.

Ok I'll try it tomorrow thanks

If a head gasket, open the radiator cap and watch for bubbles in the coolant....the bubbles will be obvious if the head gasket is a severe leak......also, go to a radiator shop and have them pressure test the system.....they can put a pressure gauge on the radiator to check for pressure build up if leak is head gasket

Oh hell I completely forgot about that one good call I will thanks. I can't believe that.