PQIA Takes a Look at 5 More Antifreeze/Coolant Brands. One Raises Eyebrows

The PQIA ran five more brands of antifreeze through the laboratory. Although four checked out fine, one has issues. Whereas the one with issues meets its freeze point protection claim, the test results  on the sample are not consistent with a new coolant based on the standard specifications stated in ASTM D-3306 and ASTM D-4985. The level of degradation acids (glycolate and formate) in the sample tested are unusually high.

In addition, the concentration of chloride is over 600% higher than the maximum level of 25mg/L as stated in ASTM D-3306 and ASTM D-4985 for a new coolant. Also, the concentration of sulfate is significantly higher than typically seen in coolants meeting claims ASTM D-3306 and ASTM D-4985 for a new coolant. Such concentrations of chloride and sulfate can result in scale and/or corrosion and are indicative of poor water quality and/or poorly reclaimed coolant.

Furthermore, considering the product tested contains only 9 parts per million (ppm) of Bitterant, it cannot be sold in the seventeen states (including Maryland, the state it was purchased in) that require a minimum Bitterant level of 30 ppm.

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