Product Tested

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Valvoline International, a commercial unit of Ashland Inc.

Company and Product Information

Corporate Office:
Valvoline International, a commercial unit of Ashland Inc.
3499 Blazer Parkway 
Lexington, KY


Valvoline International, Inc. produces, markets, and distributes automotive lubricants and chemicals for consumer, and commercial and industrial applications. The company’s consumer products include motor oil, antifreeze and radiator products, brake fluids, power steering products, automatic transmission products, fuel additives, spray lubricants, greases and gear oils, engine and parts cleaners, and maintenance products. Its commercial and industrial products comprise OEM endorsed products, heavy duty diesel engine oils, diesel exhaust fluids, natural gas engine oils, heavy duty chemicals, transmission fluids and gear oils, greases, and hydraulic and industrial oils. Source: Bloomberg

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.

Zerex 50/50 Pre-Mixed

Zerex G-05 Formula 50/50 Pre-Mixed ANTIFREEZE/COOLANT

Manfactured by: Valvoline International, a commercial unit of Ashland inc., in Lexington, KY

Purchased at: Edison, NJ

Date of purchase: 8/20/2015


Website(s): www.valvoline.com

Test Results and Assessment:

The test results for this product are consistent with its labeled claims.


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  Zerex G-05
Percent Antifreeze, (Based on Percent Glycol) 52
Freeze Point, (ASTM D3321) in ⁰F -40
Bitterant, (ASTM D7704) in ppm 42
pH, (ASTM D1287) 7.65
Color, (Visual) Yellow
Chloride and Other Anions by Ion Chromatography (ASTM D5827)  
Glycolate, ppm Not Detected
Formate, ppm Not Detected
Chloride, ppm Not Detected
Sulfate, ppm Not Detected
Nitrite, ppm 1311
Nitrate, ppm 1360
Phosphate, ppm Not Detected