has anyone tried vinegar for getting the rust out of a gas tank? it works well on tools ect. it leaves a black stain but maybe a baking soda solution or something like that would clean it up?
Use vinegar to flush rust out of the tank. Remove the tank to complete the process to be certain so nothing can make its way into the vehicle. Rinse the tank thoroughly with pressure washing equipment. Be sure that all excess gasoline residue is removed (until the water runs clear, without a gasoline odor). Then, fill the tank with vinegar and let it sit for between 12 and 24 hours. Remove the vinegar from the tank and rinse it thoroughly with water once again. To counteract the vinegar’s acid, add between one-half and one cup of baking soda, depending upon the tank size. Making sure the baking soda coats the entire surface. Let that sit for between 20 and 45 minutes. Rinse thoroughly again with water. Make certain that no water remains in the tank before filling it with gasoline again.
Read more: How to Remove Rust From a Gas Tank | eHow.com LINK