PETROLEUM QUALITY INSTITUTE OF AMERICA
The Data Speak for Itself...
Product Tested
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Circle K Stores Inc.
Company and Product Information
Corporate Office:
Cirlce K Stores Inc.
Tempe, AZ
Website(s): www.circlek.com
Circle K is an international chain of convenience stores, founded in 1951, in El Paso, TX. It is owned and operated by the Canadian-based Alimentation Couche-Tard, which is one of the largest company-owned convenience store operators in the world with more than 16,000 stores across Canada, the United States, Europe, Mexico, Japan, China, and Indonesia. The company operates its corporate stores under mainly Couche-Tard, Mac’s, Circle K, On the Run and also under the affiliated brands 7-jours, Dairy Mart, Daisy Mart and Winks.
Circle K SAE 5W-30
Premium Motor Oil
Product: Circle K
Viscosity Grade: SAE 5W-30
Labeled: API SN/ILSAC GF-5
Distributed By: Circle K Stores Inc., Tempe, AZ
Manufactured By: Pinnacle Oil, Indianapolis, IN
Purchased at: Tully, NY
Date of purchase: 9/3/2018
Website(s): www.circlek.com
Test Results and Assessment:
The results of the tests conducted on this sample meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product label, and are consistent with the listed API Service Categories.
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Physical Properties |  |
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| Elemental Analysis | |
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| Labeling | |
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Note1: Although laboratory tests alone cannot be used to establish if engine oil meets an API Service Category, they can be used to determine if it doesn't. Note2: The specification for cold cranking viscosity includes only a maximum value; the minimum value shown in the “standard” area of the chart is truncated for illustrative purposes.
| PHYSICAL TESTS (click for test details) - a | Standard | Circle K |
| TBN, mg KOH/g (ASTM D2896) | 8.57 | |
| Viscosity @ 100ºC, cSt (ASTM D445) | 9.3 to <12.5 | 10.57 |
| Viscosity @40ºC, cSt (ASTM D445) | 63.53 | |
| Viscosity Index (ASTM D2270) | 156 | |
| Viscosity @-30ºC mPa s (cP) (ASTM D5293) | 6,600 Max | 6,326 |
| Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) | 15 Max -c | 11.8 |
| ELEMENTAL ANALYSIS (click for test details) - a, b | ||
| Additives | ||
| Calcium, ppm | 2,447 | |
| Magnesium, ppm | 26 | |
| Phosphorus, ppm | 600 to 800 -d | 800 |
| Zinc, ppm | 882 | |
| Molybdenum, ppm | 44 | |
| Barium, ppm | <1 | |
| Boron, ppm | 2 | |
| Silicon, ppm | 5 | |
| Potassium, ppm | <5 | |
| Manganese, ppm | <1 | |
| Titanium, ppm | <1 | |
| Copper, ppm | <1 | |
| Sodium, ppm | 5 | |
| Vanadium, ppm | <1 | |
| Contaminants | ||
| Silver, ppm | <1 | |
| Aluminum, ppm | <1 | |
| Chromium, ppm | <1 | |
| Iron, ppm | <1 | |
| Nickel, ppm | <1 | |
| Lead, ppm | <1 | |
| Antimony, ppm | <1 | |
| Tin, ppm | <1 | |
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