Just dropped the rear tank and need some advice on cleaning it out. Tank had about 10 gallons of rusty old fuel. Previous owner had the truck 5 years and never used it so its going on 7 now. Shower head was toast so I'll be modifying that. I hooked my fuel pump to the frame and piped it into the front tank with some check valves and a filter pre pump. Need to toss this back in before we head out Saturday.