Does anyone know what kind of mileage a diesel gets? We got hit by a driver who ran a stop sign and our truck is totaled. We now have to get another 350 and most of them are diesel. No dually, prefer 4 x 2 - and wanted gas, but they are harder to find apparently. I wondered about the mileage since the tank is MUCH smaller than a gas tank. I hate having to keep stopping when I haul the trailer.