Has anybody w/ a newer f-550 experienced clogged diesel lines and filters due to a rotting gas tank? I brought the dump in for service (loss of power), and they told me that the tank is rotting on the inside. Warranty will cover it but, they only clean and reseal the inside of the tank. Not replace... I have 2 other ford dumps and a new ford p/u with no problems. The dump only has 23,000 miles on it. The dealership said it from bad diesel. That's B.S. i buy my diesel at a truck stop that sells a ton of fuel, always fresh.