This is full strength, poured into a rubbermaid tub with a lid. I just put degreased rusted stuff in and if it does not totally submerge, I brush it on and around a bit as I walk to an' fro the garage. I have my front wheel hubs "cooking" right now and will wipe with thinner, prime and paint later today. It is not as harsh as muratic acid, nor does it burn like it either. The iron phosphate coating helps keep rust off. Muratic acid leaves chlorine. I understand the chlorine is what promotes rust, even if you blow it dry with air compressor.
Got the list to thank for this one. Love the archives and search mode.
Brett