[06VT365]

Originally Posted by Agjake11 No need for studs to get a custom tune. Just keep watch over the vitals and you wont lift a head

Yep, I am a believer that the majority of headgaskt failures are from egr/oil cooler failures that go unnoticed by not keeping an eye of oil and water temps. Many many bone stock trucks with failures.
Poor maintenance among other things also.

Sediment in the cooling system, flowing through the tiny passages in the egr cooler surrounded by very hot exhaust gasses causes the sediment to solidify, clogging the cooler, cooler ruptures, starts leaking small amounts of coolant into cylinders, coolant turns to vapor, vapor causes extreme cylinder pressures thus stretching bolts.

Not saying that's the only cause, but I believe it to be the cause of many stretched bolts.