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Old 09-15-2020, 09:53 PM   #3
Brian
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Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,816
Default Re: 1936 Overheating Problem

Fill the cooling system with caustic soda and run it. The hotter it gets, the better it'll clean. you'll be surprised at what comes out! Do not do this if you're running aluminum heads; it'll gobble them up!
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