Hydrochloric acid and JB weld

[350xRules]

If you want to run an experiment with the muriatic acid, just find an old glass jar and drop a rusty bolt in there with the muriatic acid. It eats the rust off quick, then starts working on the steel. Its potent as far as over the counter corrosives go. Will cause chemical burns on the skin, can cause permanent eye damage and can cause lung damage if inhaled. It is more toxic then just about anything else you can buy over the counter! Use caution when using it, it will give off gasses that can cause severe lung issues, especially for people that already have lung problems like COPD, Asthma ect. You should always wear gloves and eye protection for every chemical you handle, as gay as is sounds its true. "Dermal absorption" is a process by which your skin will absorb chemicals into the blood stream. We have all had short term exposures to various chemicals, prolonged usage though can cause harm. The primary purpose for muriatic acid is cleaning of concrete, masonry and to lower the pH in swimming pools. As far as neutralization, its best to buy a small container, dilute it with water, and use it over and over on tanks until its lost a lot of its corrosiveness, then use the old concrete method to finally neutralize it. You should filter it after each use, it gets the large rust particles out and makes cleanup on successive tanks easier. I have always filled my tanks with the water/acid mix. I fill it half to 3/4 the way with water then top it off with acid. The rust removal will be faster if its warm. If its summer time, and hot, I usually fill the tank with a little more water like 3/4 the way up. If its cold a 50/50 mix will work better. You could pour a small amount of acid water mix in and rotating the tank every few min. The only plus about filling the whole tank up is that you can easily get the top area of the inside of the tank all the way up to the gas cap without any difficulty. Just like MagicJames said though, dont leave it in in too much acid concentration, and dont leave it in too long. I made the same mistake in a honda triles bike tank a few years ago. All part of learning how to restore this old stuff though. Usually these tanks are pretty fragile anyway when we start with them, the acid eats off the rust which is sometimes all thats holding them together anyway!

[atc350xer]

When you're done using it in the tank, empty the tank, then mix a box of baking soda with a couple quarts of water and swish it around in your tank to neutralize it... then rinse with clean water, then maybe wd40.