Originally Posted by 06VT365
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.
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This all is true.. i dont "hot rod" my truck much, i mean its a lifted heavy truck and really has no business going balls to the wall ( unless som idiot comes up and wont leave it alone) i just wanted it to get up and go when i need it (so far it does) it actually out ran a stock height ext cab duramax the other night and kinda shocked me considering the height weight and what not of my truck. The truck runs fine for what i want with it.. i just dont like not having a loud whistle
If i can ever sell my car i plan on getting another 6.0 and building it to run like a raped ape!