The D/Max in my previous company's 5500 started knocking and to make a long story short needed to be picked up at the dealership (because it was gonna cost $13k for new motor) and taken to boss's house. 20,500lb no problem for the 250! Priceless looks on service writer and techs faces when i showed up in a little ole F-250 to pick it up not to mention the looks of shame i got from passing D/Max drivers on the way to the shop!