I am thinking about buying a diesel truck because I put on a lot of highway miles. I do not tow anything, but am just looking for longevity.. I like the RAM trucks and my question is which would last longer a 3.0 eco diesel or a cummins. I don't haul anything so a half ton truck would be OK. I just want to get the one that I can get the most miles on.. Either way the truck would be deleted and tuned. Thanks for any help given!