Evapo-rust is absolutely fantastic stuff. I have a 1975 cb200 that I am restoring. It was sitting outside for 30 years in the rain and needless to say, it was coated in rust. A little soaking in evapo-rust and most parts are like new. It just eats away the rust without harming anything else, including paint. Well worth it!

Even if you just slosh some evapo-rust inside the tank to get rid of all the rust, then use some nails to clean up the caked on stuff, then rinse in acetone- you cold probably just stop there and not use a sealer. Just fill with gas and you are good to go.

Great, great stuff. I paid around $25 for a gallon from harbor freight. Wish I had known about pep boys, or I would have purchased there for cheaper according to motobuddha