My truck is used to haul boats around the country. It is totally stock and has done the job well so far. The broken crank thread has got me concerned as well as a couple of other threads. I cant afford to be broken in the middle of no where with a $150,000 boat hooked to it. I understand all truck have problems but I didnt buy this truck new and hope it was take care of. I bought it with 110,000 on it and it now has 142,xxx. I try not to push it although even on cooler days towing 8000 pounds up hil will make the temp gauge climb to 220s. Is it just the luck of the drawn or are these engines pretty tough in stock form? thanx