DITTO the cooling system comment above. It is my theory, based on many, many years of 2.6 n/a and turbo experience, that the cooling system must be properly maintained, with the first task on an unknown car to be having the radiator rodded out and tanked, and a new oem thermostat. It will take it off the road for about 3 days, and keep your son from getting lot's of practice in pulling the head to replace blown head gaskets.

My congratulations to him for good sense, or terminal mental illness, take your pick. Have him call on me with any questions, and I'm sure the other starquest gurus on here, or the starquest boards will as well.