Antifreeze/coolant is critical for protecting engines. The primary function of the fluid is keep an engine cool (manage operating temperatures) by transferring the heat generated during combustion to a radiator where it is then dissipated to air. Although water alone is a very good heat transfer fluid, antifreeze/coolant is a mixture of water and antifreeze (most commonly glycol). Glycol reduces the freeze point of the water to prevent freezing in cold environments. In addition to water and glycol, the fluid contains additives that help reduce pitting, cavitation and corrosion of engine and cooling system components. Because of this, antifreeze/coolant, and its quality, is vital to engine performance.
Sample Status Key:
Below is a list of all the Antifreeze/Coolant samples tested. Click links to view sample assessment and details.
| Brand | Date | Type | Status |
|---|---|---|---|
| Star brite | 4/20/2018 | Extended Life Coolant Premium Pre-Mixed 50/50 |  |
| Final Charge | 4/17/2018 | Global 50/50 Prediluted Coolant/Antifreeze Nitrite-Free Extended Life | |
| Durex | 3/14/2018 | Antifreeze/Coolant 50/50 Pre-Mix Classic Green Formula | |
| Pride 500 | 3/12/2018 | 50/50 Pre-Mix Antifreeze & Coolant | |
| HeatWave Universal | 3/12/2018 | “Protects to -34°F” Antifreeze & Coolant |  |
| ShopRite | 12/17/2017 | Ready-To-Use 50/50 Antifreeze Coolant | |
| SuperTech | 12/7/2017 | Ready To Use Prediluted 50/50 Antifreeze/Coolant Extended Life | |
| Valvoline with ZEREX Technology | 12/7/2017 | 50/50 Prediluted Antifreeze/Coolant | |
| MENARDS | 11/16/2016 | 50/50 Prediluted Antifreeze/Coolant | |
| O’Reilly | 11/15/2016 | Conventional Green 50/50 Prediluted Antifreeze & Coolant | |
| Performance | 11/15/2016 | 50/50 READY-TO-USE Premixed Green Traditional Antifreeze & Coolant | |
| Performance | 11/15/2016 | 50/50 READY-TO-USE Premixed Green Traditional Antifreeze & Coolant | |
| Liquid Moon | 11/15/2016 | Conventional Green 50/50 Pre-Diluted Antifreeze/Coolant | |
| MidWest Guard | 11/15/2016 | Global 50/50 Antifreeze/Coolant | |
| Parts Master | 11/15/2016 | 50/50 Pre-Diluted Antifreeze & Coolant | |
| PolyGuard | 11/15/2016 | 50/50 Pre-Diluted Antifreeze/Coolant | |
| Polar Zone | 11/15/2016 | “Protects to -20°F” Permanent Premixed Formula Antifreeze/Coolant | |
| SUPER XXX | 11/15/2016 | “Protects to -34°F” Antifreeze & Coolant | |
| Blue Mountain | 4/13/2016 | Professional Conventional Green 50/50 Pre-Diluted Antifreeze/Coolant | |
| SMB (Superior Motoring Benefits) | 4/13/2016 | Ready To Use 50/50 Pre-Diluted Antifreeze Coolant | |
| Polar | 4/12/2016 | LONGLIFE 50/50 Prediluted Antifreeze/Coolant | |
| PolyFreeze | 4/12/2016 | 5/150 Long Life Concentrate Antifreeze Coolant | |
| Shell | 4/11/2016 | Rotella Ultra ELC 50/50 Antifreeze/ Engine Coolant | |
| Signature Home | 4/11/2016 | Ready to use Coolant & Antifreeze | |
| SuperS | 2/26/2016 | 50/50 Prediluted Antifreeze Summer Coolant | |
| Chevron Havoline | 1/15/2016 | 50/50 Prediluted Universal Antifreeze/Coolant | |
| GC | 12/28/2015 | Super Extended Life Prediluted Antifreeze/Coolant Blue Hybrid OAT Formulation For Asian Vehicles Using Blue Coolant | |
| Road-Tech | 12/28/2015 | Extended Life 50/50 Prediluted Antifreeze & Coolant | |
| SuperTech | 12/28/2015 | Ready To Use Prediluted 50/50 Antifreeze/Coolant | |
| AUTOGUARD | 9/24/2015 | 50/50 Ready To Use Universal Antifreeze | |
| AutoZone | 9/18/2015 | Extended Life 50/50 Pre-Diluted Universal Antifreeze/Coolant | |
| CarQuest | 9/18/2015 | Extended Life 50/50 Pre-Diluted Antifreeze/Coolant | |
| PROLine | 9/18/2015 | Extended Life 50/50 Pre-Diluted Antifreeze/Coolant | |
| Royal Farms | 9/2/2015 | 50/50 Premixed Ready To Use Antifreeze and Coolant | |
| Prestone | 8/20/2015 | Extended Life Technology 50/50 PREDILUTED ANTIFREEZE/COOLANT | |
| STP | 8/20/2015 | Global Extended Life 50/50 Pre-Diluted Antifreeze/Coolant | |
| Zerex | 8/20/2015 | G-05 Formula 50/50 Pre-Mixed ANTIFREEZE/COOLANT | |
| ULTRA GUARD | 8/5/2015 | WINTER-ALL SEASON Ready to Use Formula ANTI-FREEZE COOLANT | |
| Metro | 7/24/2015 | -20°F Formula Antifreeze/Coolant |  |
| Performance | 7/24/2015 | Ready-To-Go 50/50 Premixed Green/Traditional Antifreeze/Coolant | |
| Polar Zone | 7/24/2015 | Permanent Premixed Formula ANTIFREEZE/COOLANT | |
| ZECOL Multi-Max | 7/24/2015 | Extended Life 50/50 Pre-Diluted Antifreeze/Coolant | |
| All Temperature | 7/1/2015 | Pre-Mixed Antifreeze/Coolant | |
| Prime | 7/1/2015 | 50/50 PREDILUTED ANTIFREEZE COOLANT | |
The Fair Packaging and Labeling Act (FPLA) and the Uniform Packaging and Labeling Regulations requires each package of consumer commodities bear a label on which
With snow making an early season appearance in Chicago today, it is a good reminder, if you haven’t already done so, to consult your vehicle
The results of the tests conducted on samples of antifreeze/coolant shown below meet the products’ labeled freeze point claims and, based on the results of
Motor Oil Samples The Petroleum Quality Institute of America reports on three brands of SAE 5W-20, two brands of SAE 5W-30, and two brands of
The Petroleum Quality Institute of America (PQIA) fielded a number of calls and emails following publication of test results for three brands of antifreeze (also
Results in on Three Coolant Samples; One Raises Eyebrows While the PQIA examined two brands of coolant and found no issues, one product on the
The Petroleum Quality Institute of America tested three brands of Antifreeze/Coolant. The freeze point of the samples tested meet the products’ labeled claims and based
The results of the tests conducted on these samples are consistent with their labeled claims.
Two of the five coolant/antifreeze samples recently examined by PQIA fail to meet their label claims for freeze point protection. Polar Zone: Test results on
The results of the tests conducted on these samples are consistent with their labeled claims. CLICK BOTTLES FOR DETAILS Polar LONGLIFE Shell Rotella Ultra ELC
Four more samples of Antifreeze/Coolant tested, one has issues, another underscores the importance of reading the labels Of the four antifreeze/coolants tested, one product
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
The Fair Packaging and Labeling Act (FPLA) and the Uniform Packaging and Labeling Regulations requires each package of consumer commodities bear a label on which
With snow making an early season appearance in Chicago today, it is a good reminder, if you haven’t already done so, to consult your vehicle
The results of the tests conducted on samples of antifreeze/coolant shown below meet the products’ labeled freeze point claims and, based on the results of
Motor Oil Samples The Petroleum Quality Institute of America reports on three brands of SAE 5W-20, two brands of SAE 5W-30, and two brands of
The Petroleum Quality Institute of America (PQIA) fielded a number of calls and emails following publication of test results for three brands of antifreeze (also
Results in on Three Coolant Samples; One Raises Eyebrows While the PQIA examined two brands of coolant and found no issues, one product on the
The Petroleum Quality Institute of America tested three brands of Antifreeze/Coolant. The freeze point of the samples tested meet the products’ labeled claims and based
The results of the tests conducted on these samples are consistent with their labeled claims.
Two of the five coolant/antifreeze samples recently examined by PQIA fail to meet their label claims for freeze point protection. Polar Zone: Test results on
The results of the tests conducted on these samples are consistent with their labeled claims. CLICK BOTTLES FOR DETAILS Polar LONGLIFE Shell Rotella Ultra ELC
ADVISORIES, CONSUMER ALERTS, AND DON’T BUYS Consumer Alert A CONSUMER ALERT is issued by PQIA when the product tested has a significant
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PETROLEUM QUALITY INSTITUTE OF AMERICA SAMPLE SUMMARY FOR ANTIFREEZE & COOLANT Antifreeze/coolant is critical for protecting engines. The primary
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