Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Muriatic Acid Rust Removal
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Old 10-06-2012, 07:46 PM
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Found this old thread and have a question

According to all the info in this old tread, muriatic acid is death for iron or steel, but how about cleaning a heater core ? I used it about 30 years ago for cleaning heater cores still installed in the vehicle. Just rinsed good with water afterwards and hooked the hoses back up. Will the corrosion inhibitors in anti-freeze keep the muriatic acid from doing any damage ? I need to clean the heater core on my recently acquired (march 5th of 2012) C-1500 . Thanks, Big Al
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