DG Auto SAE 10W-40, API SF
Distributed by Dolgencorp, LLC Goodlett, TN
Purchased in: Dollar General, Lugoff, SC
Date of purchase: 12/9/2011
Note: Whereas the results of the tests conducted on this sample meet the requirements of an SAE 10W-40 engine oil, the phosphorus and zinc levels are below what would normally be expected for an API SF engine oil.
API SF is an obsolete specification, and as noted on the back label of this product it should not be used in cars built after 1988.
PETROLEUM QUALITY INSTITUTE OF AMERICA TEST PROGRAM
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![]() Test Results |
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The ranges and averages shown in the table below are for
current specifications (API SN GF-5). See footnote "e" |
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PHYSICAL TESTS | Standard/ranges-b | Average-e | |
TBN, mg KOH/g, (ASTM D2896) | 6.1 to 8.3 | 7.2 | 3.5 |
Viscosity @ 100ºC, cSt, (ASTM D445) | 9.3 to 12.5 | 10.5 | 14.1 |
Viscosity @ 40ºC, cSt, ASTM D445 | 90.0 | ||
Viscosity Index (ASTM D2270) | 162 | ||
Viscosity @ -25ºC mPa s (cP) (ASTM D5293) | 7,000 Max | 5,775 | 4,175 |
Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) | 15 Max | 14.2 | 17.9 |
ELEMENTAL ANALYSIS-c | |||
Additives | |||
Nitrogen μg/g (ASTM D-5762) | 599 to 990 | 804.2 | 349.8 |
Calcium | 1,570 to 2,460 | 2,051 | 991 |
Magnesium, ppm | 6 to 46 | 12.3 | 4 |
Phosphorus, ppm | 600 to 800 | 703 | 378 |
Zinc, ppm | 766 to 868 | 791 | 404 |
Molybdenum, ppm | <1 to 269 | 60 | 20 |
Barium, ppm | <1 | <1 | <1 |
Boron, ppm | <1 to 237 | 79 | 20 |
Silicon, ppm-d | 3 to 9 | 5 | 8 |
Potassium, ppm | 9 to 17 | 11 | <5 |
Manganese, ppm | <1 | <1 | <1 |
Titanium, ppm | <1 to 114 | 11 | <1 |
Sulfur, ppm | 5,000 max | 2,785 | 2,300 |
Copper, ppm | <1 | <1 | <1 |
Sodium, ppm | 5 to 454 | 172 | <5 |
Vanadium, ppm | <1 | <1 | <1 |
Silver, ppm | <1 | <1 | <1 |
Aluminum, ppm | <1 to 3 | 1 | <1 |
Chromium, ppm | <1 | <1 | <1 |
Iron, ppm | <1 to 1 | 1 | <1 |
Nickel, ppm | <1 | <1 | <1 |
Lead, ppm | <1 | <1 | <1 |
Antimony, ppm | <1 | <1 | <1 |
Tin, ppm | <1 | <1 | <1 |
a- Click here for product label. b- Standards, shown in yellow are established by API, SAE and others. Ranges, shown in teal, represent the high and low data for the 13 major brands of API SN ILSAC GF-5 tested in September 2011. c-Test Method for metal analysis is ASTM ASTM D5185. d- Although silicon is used as an antifoam additive in lubricants, concentrations above 7ppm have been linked to contamination from abrasive material, e- Average of the 13 major brands of API SN ILSAC GF-5 tested in September 2011. |
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DG Auto 10W-40 | |||||
The American
Petroleum
Institute sets
forth a number
of laboratory
and engine tests
required to meet
an API SN ILSAC
GF-5
performance
specification.
Although
laboratory tests
alone cannot be
used to
establish if an
engine oil meets
API SN, they can
be used to
determine if it
doesn't.
The following is a comparison of the test results for the sample of DG Auto 10W-40 tested with the API SN ILSAC GF-5 requirements. |
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Viscometrics | |||||
The viscometrics meet the required targets for a 10W-40.
Click here for more on chart and Viscosity@100șC,cSt Click here for about chart and Viscosity @ -30șC
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Volatility | Phosphorus | ||||
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FRONT AND BACK LABELS FROM PRODUCT TESTED | |||||
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