My F250 diesel stopped running and left me on the side of the road. Not ever haveing worked on a diesel, I spent several hours researching how to diagnose. In the process, I ran across a guy in Atlanta who ran a diesel shop and had a video about the amount of fuel problems he was seeing in just the last year. Said the quality of the fuel had really gone down and a LOT of trash was showing up in the trucks. Fortuntaly, I had installed a 2 micron quart sized filter just last year between the tank and the lift pump. The pump is not in the tank on this vehicle.