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Old 11-15-2019, 09:56 PM   #4
gsholz
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Vessel Model: Sold-GB 52 Europa, Queenship 59, Tolly 45
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There are test strips from CAT or NAPA that show pH and nitride level in addition to freeze protection. They are typically for standard SCA compatible coolants. I don't think they work with OAT and similar coolants.
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