Had an interesting day with the Ram 2500 4X4, with a v plow on it. Had backed it up a slight incline at the edge of the driveway. Had it there so we could come out, plow the yard, and clear the driveway and road. It had over a third tank of fuel. Went to start it today and it just cranked and cranked. The low fuel light was on. We added a 5 gallon can of gas, and it started right up. Seeing it was only 12 degrees out we had been worried. We pulled out onto flat ground and the gauge registered over 1/3 tank again. Better to know that here at home than at a remote campsite, to keep the tank full or park on a reasonably flat spot. Guess a trip to the dealer is in order...