The independent resource for information and insights on the quality and integrity of lubricants in the marketplace.

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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Categorised in: Antifreeze/Coolant Program, PQIA Quality Reports

2 Responses

  1. I have been a follower of your testing for over 3 yrs and I am surprised each time I see your test results for the amount of bad products oil, transmission fluid and now antifreeze that are out there for sale. It appears the regulator agency that should be testing these products does not care or wants to take the time to do their own testing. How can these bad products still be available for a consumers to buy? Thank you for having a web site that post testing results and tries to protect consumers.

  2. I’m very grateful PQIA is testing antifreeze, however I wish they would put some kind of test for actual corrosion protection. The statistical tests are nice to know, however I’d like to know how these coolants fare against each other with actually protecting the engine and radiator against rust and corrosion.

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