Sold my 2004.5 with 217k on the clock. I di nothing to the truck other than a heavy duty 48re trans rebuild with Goerend parts. I added a amsoil dual remote bypass filter setup early on along with a dual filter frame mount for fuel filtration down to 2micron. This truck gave me no problems and never replaced injectors though it would smoke on heavy acceleration. I have owned a 2018 dually which I bought used about a year ago . Just wanted to say this was a great truck. I will monitor the 3rd gen forums to help others.