Wait until you are about to go on vacation and the thing starts running like******a couple days before. You take take it to the dealer and they say cab has to come off, we will need it at least a week maybe two. You get it back, runs good for a few months, and guess what, needs to go back. This time its only an injector that leaked and caused the oil to overflow. Rear bed plate, one radiator, two more injectors, and crappy fuel mileage all in 34k miles. Thats what I got from my 08 6.4. Got rid of that piece of******as soon as the 5 year 100k mile warranty was up.