I have a driveway with a preety good slope upwards, when I back the truck in with the fuel low..., around an 8th of a tank ( hard to know since the gauge is horribly inaccurate, see other complaint), the next morning the truck won't start until I roll it down into the street. It then fires right up and I can drive 60 miles or more before I fill it. Somethings definitely wrong with the fuel pick up placement or the design of the tank.