[benwah]

I have used a chain with around a half gallon of kerosine. Rinse out with garden hose. Then clean with chain and half gallon of M.E.K. . Then rinse with M.E.K. M.E.K. helps get all the water out of the tank. I usually use a tank sealer from the local tractor repair guy. Before you seal the tank check for pinholes. I have used JB weld over pin holes then a coat of Rustolium or POR-15. I have used the industerial spray on bedliner on a tank on my 69 International 1 ton. It has held up well and cut down on the noise of the sloshing around. Clean everything well thats the key. Good luck!