PETROLEUM QUALITY INSTITUTE OF AMERICA 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. 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.
| Wolf's Head EXTREME DUTY Synthetic Blend SAE 15W-40, API CJ-4/CI-4 Plus, CI-4/SN | |
 CLICK FOR LARGER IMAGE(SCROLL TO BOTTOM OF PAGE FOR LARGER IMAGE OF BACK LABEL) |
Wolf's Head
SAE 15W-40, API CJ-4/CI-4 Plus, CI-4/SN Wolf's Head Oil Company, Tampa, FL
Purchased at: Pit Stop, Loganton, PA Date of purchase: 6-19-2013
The results of the tests conducted on this sample meet the requirements of an API CJ-4/CI-4 Plus, CI-4/SN, SAE 15W-40 engine oil.
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| PHYSICAL TESTS | Standard/ranges-a | Wolf's Head | |
| TBN, mg KOH/g, (ASTM D2896) | 7.39 to 9.66 | 9.02 | |
| Viscosity @ 100ºC, cSt, (ASTM D445) | 12.5 to <16.3 | 15.4 | |
| Viscosity @ 40ºC, cSt, ASTM D445 | 108 to 129 | 118 | |
| Viscosity Index (ASTM D2270) | 130 to 136 | 137 | |
| Viscosity @ -20ºC mPa s (cP) (ASTM D5293) | 7,000 Max | 6,273 | |
| ELEMENTAL ANALYSIS-b | |||
| Additives | |||
| Calcium | 1,208 to 2,321 | 1,389 | |
| Magnesium | 8 to 911 | 896 | |
| Phosphorus, ppm | 877 to 1,312 | 1,121 | |
| Zinc, ppm | 1,012 to 1,490 | 1,268 | |
| Molybdenum, ppm | 0 to 117 | 45 | |
| Barium, ppm | <1 | <1 | |
| Boron, ppm | 1 to 679 | <1 | |
| Silicon, ppm-d | 4 to 8 | 6 | |
| Potassium, ppm | 2 to 5 | <1 | |
| Manganese, ppm | <1 | <1 | |
| Titanium, ppm | <1 | <1 | |
| Copper, ppm | <1 | <1 | |
| Sodium, ppm | 1 to 6 | 4 | |
| Vanadium, ppm | <1 | <1 | |
| Contaminants | |||
| Silver, ppm | 1 | <1 | |
| Aluminum, ppm | 1 to 2 | <1 | |
| Chromium, ppm | <1 | <1 | |
| Iron, ppm | 1 to 2 | <1 | |
| Nickel, ppm | <1 | <1 | |
| Lead, ppm | <1 | <1 | |
| Antimony, ppm | <1 | <1 | |
| Tin, ppm | <1 | <1 | |
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a- Standards, shown in yellow are established by API, SAE and others. Ranges, shown in green, represent the high and low data for the brands reported in this sample set 2013 (click for sample set). b-Test Method for metal analysis is ASTM ASTM D5185.
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| Wolf's Head SAE 15W-40 | ||||
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The American Petroleum Institute sets forth a number of laboratory and engine tests required to meet their performance specification. Although laboratory tests alone cannot be used to establish if an engine oil meets API specifications they can be used to determine if it doesn't.
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| Viscometrics | ||||
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The viscometrics for the sample tested meet the required targets for a 15W-40.
Click here for more on chart and Viscosity@100ºC,cSt Click here for more on chart and Viscosity @ -20ºC
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| FRONT AND BACK LABELS FROM PRODUCT TESTED | ||||
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