The Stovebolt Site Forums The Shop Area Paint and Body Shop phos acid, how should it look when done

I use it all the time and am very happy with the results. Leaving it on too long is not a problem for all but maybe delicate stuff. I soak parts in it to remove heavy rust and have not seen a problem. You can let it dry between coats with no problem. But when you have it the way you want it then do it again and let it set a few minutes but don't allow to dry. Then you can rinse or wipe it off. Be sure to dry it though or it will flash rust. You can also wipe it once done with good lacquer thinner or a good wax and oil cleaner from a paint supply place.