Well I have been thinking about getting a new 2011 3500. I have been reading here that the trucks that are worked hard and not spend a lot of time doing short trips do well. 67% of the miles we drive are pulling our trailer, another 5 to 10% are on the freeway. The rest are in town. is that going to be enough to keep things cleaned out? Am I making a mistake even thing of trading in our 05?