Head gasket?

[spec-4]

I have an 04 with the 6.0, and I am losing coolant. I am getting a pressure release from the radiator cap about every 30 sec. I haven't noticed any white smoke from the tail pipe, so I dont think it is the EGR cooler. What do you recomend? Head gasket, ARP bolts, EGR bypass kit, est.

[Robsr]

You most likely have a blown HG. I have seen many 6.0's that had lost a HG and not the cooler however, the cooler is known for its high rate of failure so it should be upgraded to avoid a future catastophy.

ARP's
Gaskets
Upgraded EGR cooler
Oil cooler, stock or upgraded
Coolant by-pass filter
A Bypass oil filtration, 1 micron filter
Synth. Oil
Consistant Maint.

These things will drastically reduce the possibilty of a future failure.