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For Removing Rust On Old Cars Use Oxalic Acid
Bob Clayton, Suwanee, Ga.: "For removing rust on old cars, I use oxalic acid. It was the ingredient in radiator fast flush before the environmental revolution. I buy it in 25 kg sacks and mix about 2 or 3 tbsps. of the granules with a gallon of water to make the solution. It only eats rust. It won't damage paint,
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For Removing Rust On Old Cars Use Oxalic Acid FARM SHOP Miscellaneous 27-6-36 Bob Clayton, Suwanee, Ga.: "For removing rust on old cars, I use oxalic acid. It was the ingredient in radiator fast flush before the environmental revolution. I buy it in 25 kg sacks and mix about 2 or 3 tbsps. of the granules with a gallon of water to make the solution. It only eats rust. It won't damage paint, chrome, glass or skin, although it is poisonous. It also works great for bathtub and toilet tank rust stains.
"It may not be easy to find, however. I had to open an account with an industrial chemical supplier to get mine. However, 25 kg. of this stuff should last you a lifetime." Auto Restore Magazine
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