There is one difference between the 29-mpg 2015 Ram 1500 EcoDiesel HFE that debuted at the Detroit auto show and the 28-mpg 2014 Ram 1500 EcoDiesel that has been on sale since February: the HFE badge on the tailgate._ We’re not being dramatic or cynical here, just honest. There isn’t a single mechanical change to […]