I have a 13' ram 1500 CC with 73k milles on it already. i was wondering what was the life span for these trucks? i still owe 3 years on the truck and was thinking by the time i get it paid off will it be wore out to where i need to go and trade. been debating on whether or not to get me a diesel cause 200k miles on them is nothing. if i perform the proper maintenance can i get close to 150k miles without major problems like replacing the engine?