Fuel tank sealers

For metal or plastic?

Most automotive stores carry some tank sealers. Call a tank repair shop like a radator shop to see what they use. I have been eyeing por15's brand as I like there product. I don't have too many issues with rust, but the one i did with the E tank meathod and never coated it after. Discolered inside, but after 3 years the fuel is still clean and still has the same filter. About 10 tanks of fuel, but I only use rec fuel with no alcohol. Realgas.com

I have never tried this, but I think it should work. Fill the tank 1/4 the way with nuts and bolts, strap it to one of the drive wheels of another tractor and go cut the grass for a hour or so. Should work good to clean out all the rust. Herd good things about Red Coat tank liner in the past. The cheaper ones do have a pealing issue from what I have read online. My thought was to getas much of the rust out as you can before coating.