PETROLEUM QUALITY INSTITUTE OF AMERICA The Data Speak for Itself... Home About Us Methodology Contact Us |
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Petroleum Quality Institute of AmericaAntifreeze/Coolant Test Program |
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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. |
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Consolidated 2015 Antifreeze/Coolant |
Click Bottles Below for
Data and Assessments |
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Pre-Diluted Antifreeze/Coolant |
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Test Results for Antifreeze/Coolants
CLICK BOTTLES FOR DETAILS |
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Brand | All Temperature | AutoZone | CarQuest | Metro | Performance | Polar Zone | Prestone | Prime | PROLine | STP | Ultra Guard | ZECOL | Zerex | |
Antifreeze/Coolant Description | PRE-MIXED | Extended Life Universal 50/50 Pre-Diluted |
50/50 Pre-Diluted Extended Life | -20oF Formula | Ready-To-Go 50/50 Premixed Green/Traditional | Permanent Premixed Formula/ Protects to -10oF |
50/50 Prediluted Extended Life Technology | 50/50 Prediluted | Extended Life 50/50 Prediluted | Global Extended Life 50/50 Pre-diluted | "Winter-All Season Ready To Use" | Multi-Max Extended Life 50/50 Prediluted | 50/50 Pre-Mixed G-05 Formula | |
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Percent Antifreeze, (Based on Percent Glycol) | 50 | 50 | 50 | 48 | 50 | 52 | 50 | 50 | 33 | 51 | 52 | |||
Freeze Point, (ASTM D3321) in oF | -34 | -34 | -34 | -30 | -34 | -40 | -34 | -34 | -37 | -40 | ||||
Bitterant, (ASTM D7704) in ppm | 22 | 24 | 23 | 41 | 41 | 39 | 60 | 75 | 42 | |||||
pH, (ASTM D1287) | 9.08 | 9.06 | 8.76 | 9.01 | 8.16 | 8.61 | 9.08 | 7.71 | 6.46 | 8.24 | 7.65 | |||
Color, (Visual) | Green | Yellow | Yellow | Green | Green | Fluorescent Green | Yellow | Yellow | Yellow | Yellow | Green | Green | Yellow | |
Chloride and Other Anions by Ion Chromatography (ASTM D5827) | ||||||||||||||
Glycolate, ppm | Not Detected | Not Detected | Not Detected | 24 | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | ||||
Formate, ppm | Not Detected | Not Detected | Not Detected | 61 | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | ||||
Chloride, ppm | 24 | 24 | 1 | 8 | 4 | 8 | 13 | 2 | 1 | Not Detected | ||||
Sulfate, ppm | 3 | 18 | Not Detected | 19 | 7 | 13 | 14 | Not Detected | 11 | Not Detected | ||||
Nitrite, ppm | Not Detected | Not Detected | Not Detected | 2,765 | 1,470 | 141 | Not Detected | Not Detected | Not Detected | Not Detected | 131 | 1,315 | 1,311 | |
Nitrate, ppm | Not Detected | Not Detected | Not Detected | 2 | 207 | 5 | Not Detected | Not Detected | Not Detected | Not Detected | 168 | 446 | 1,360 | |
Phosphate, ppm | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | Not Detected | 1,040 | Not Detected | Not Detected | Not Detected | 219 | Not Detected | Not Detected | |
a. ASTM D1177 | ||||||||||||||