As for the corrosion problem,I am not that worried about the tank.. It is probably .125 thick and can take some abuse.. I am worried about the fuel sending unit that is made from very thin metal. I don't know if it has an in tank electric fuel pump, but I guess it is possible.. And if you get the fuel out, don't try to flush it with water.. You will be trading one problem for another.. Flush tank with clean diesel fuel and drain from the tank..