Join Date: Mar 2003
Location: Fairbanks, Alaska
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NAPA used to market a product like that called "restore" and I liked it. I got some recently and it was not the same, did not work near as well. One warning though clean it off good if you plan to weld. I had some old steel around that I had coated as an experiment. After 5 years or so it had not rusted, but looked black. I assumed it was just mill scale and tried to weld to it. The weld turned out okay but the fumes that came off were bad acidic like, it took me awhile to figure out the cause.
A friend recently turned me on to a product called "Ospho" it is much thinner about like water. It paints on and goes a long way, but I do not think it would do as well if not painted over relatively soon after use. It does the same thing turns the rust black and kills it. My understanding is that the active ingredient in all these products and Naval Jelly is Phosphoric Acid, which turns the rust into Iron Phosphate.
I wonder how the price would compare to straight Phosphoric acid from a chemistry supplier.
I will start using Metric only when the duodecimal system is adopted!!