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PETROLEUM QUALITY INSTITUTE OF AMERICA
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Petroleum Quality Institute of America

Antifreeze/Coolant Test Program

The Petroleum Quality Institute of America (PQIA) is an independent resource for information and insights on the quality of lubricants in the marketplace. Our mission is to serve the consumer of lubricants by randomly sampling and independently testing lubricants taken from the field. Test results are posted along with the brand names on the PQIA website. This webpage provides an analysis on the brand detailed below.

The following are the test results for the sample examined.

Consolidated 2016 Antifreeze/Coolant

Click Bottles Below for Data and Assessments
 
Pre-Diluted Antifreeze/Coolant
 
Concentrate

Test Results for Antifreeze/Coolants 

 

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Brand AUTOGUARD Blue Mountain Chevron Havoline GC Polar Road-Tech Royal Farms Shell Rotella Ultra ELC Signature Home SMB SuperS SuperTech   PolyFreeze
Antifreeze/Coolant Description 50/50 Universal 50/50
Conventional Green
50/50 Universal 50/50 Blue HOAT 50/50
LongLife
50/50
Extended Life
50/50
Ready to Use
50/50
Extended Life
50/50
Ready to use
50/50
Ready to use
50/50
Antifreeze
Summer
Coolant

50/50
Extended Life

  5/150
Long Life
Concentrate
PHYSICAL PROPERTIES AND CHEMICAL ANALYSIS
Percent Antifreeze, (Based on Percent Glycol) 51 50 50 50 50 50 50 51 51 50 46 50   100
Freeze Point, (ASTM D3321) in oF -37 -34 -34 -34 -34 -34 -34 -36 -37 -34 -25 -34   -5
Bitterant, (ASTM D7704) in ppm 40 31 46 30 30 39 9 13 0 18 59 43   61
pH, (ASTM D1287) 9.27 11.11 8.46 7.73 9.17 9.03 9.53 8.48 10.86 10.73 9.13 8.93   11.09
Color, (Visual) Florescent Green Green Yellow Blue Yellow Florescent Green Green Yellow Yellow Green Green Florescent Green   Red
Chloride and Other Anions by Ion Chromatography (ASTM D5827)
Glycolate, ppm Not Detected Not Detected Not Detected Not Detected Not Detected Not Detected 642 Not Detected Not Detected Not Detected 245 Not Detected   272
Formate, ppm Not Detected Not Detected Not Detected Not Detected Not Detected Not Detected 1,015 Not Detected Not Detected Not Detected 214 Not Detected   138
Chloride, ppm 7 3 13 3 Not Detected 1 161 2 12 2 11 2   8
Sulfate, ppm 1 Not Detected Not Detected 8 Not Detected 2 3,302 3 24 Not Detected 17 1   45
Nitrite, ppm Not Detected Not Detected Not Detected Not Detected Not Detected Not Detected 3,201 Not Detected 1,450 4 1,454 Not Detected   2,305
Nitrate, ppm Not Detected 1,017 Not Detected 882 Not Detected Not Detected 180 605 388 312 397 Not Detected   758
Phosphate, ppm Not Detected 3,093 Not Detected 1,178 Not Detected Not Detected 80 101 Not Detected Not Detected Not Detected Not Detected   Not Detected
a. ASTM D1177