Originally Posted by lr2001silver

Phil, you are always correct fuel is the only thing that lubricates and cools the pump. I think a combination of both of our posts is the reason for failure. The sediments tend to settle towards the front of the tank ie the lowest point. When you are at low fuel the sediments get sloshed around more then when tank has fuel in it. This would cause the sediments to pass by the sock or screen and have the most chance of getting sucked in.