Product Tested

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Coastline Package

Company and Product Information

Corporate Office:
30470 Energy Drive
New Church, VA 23415

Website(s):No Websites Available

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.

Metro -20⁰F Formula

Metro -20⁰F Formula

Marketed by: Coastline Packaging in New Church, VA

Purchased at: Clyde, OH

Date of purchase: 7/24/2015


Website(s): No Websites Available

Test Results and Assessment:

The Freeze Point test result for this sample exceeds the labeled claim. It should be noted, however, the freeze point is higher than the industry standard of -33.5⁰F required by many states. In addition, the chloride and sulfate levels are extremely high. Such concentrations can result in scale and/or corrosion. Furthermore, considering the product tested contains no Bitterant, it cannot be sold in the seventeen states that require a minimum Bitterant level of 30 parts per million(ppm).

It should also be noted that there are no ASTM, OEM or other industry specifications claimed on the product label.

bottle icon Physical Properties pass
Chemical Analysis pass
Labeling warning

Note: Although laboratory tests alone cannot be used to establish if coolant meets standards, they can be used to determine if it doesn't.

Physical Properties and Chemical Analysis  Metro
Percent Antifreeze, (Based on Percent Glycol) 48
Freeze Point, (ASTM D3321) in ⁰F -30
Bitterant, (ASTM D7704) in ppm Not Detected
pH, (ASTM D1287) 9.01
Color, (Visual) Green
Chloride and Other Anions by Ion Chromatography (ASTM D5827)  
Glycolate, ppm 24
Formate, ppm 61
Chloride, ppm 227
Sulfate, ppm 665
Nitrite, ppm 2765
Nitrate, ppm 2
Phosphate, ppm Not Detected