CITGO Supergard Motor Oil 10W-40 API SN, SM
CITGO Petroleum Corporation, Houston, TX
Purchased in: Rutter's Farm Store, New Cumberland, PA
Date of purchase: March 17, 2012
All tests conducted on this sample meet the specifications for API SN 10W-40 Engine oil.
The Standard below are for the latest specification (API SN GF-5), and the Ranges and Averages are based on the 13 major brands of API SN ILSAC GF-5 tested in September 2011. Click here for more on API Service Categories.
PETROLEUM QUALITY INSTITUTE OF AMERICA
The ranges and averages shown
in the table below are for
current specifications (API SN GF-5). Comparison of sample tested is shown at right.
|PHYSICAL TESTS||Standard/ranges-b||Average-e||CITGO Supergard|
|TBN, mg KOH/g, (ASTM D2896)||6.1 to 8.3||7.2||8.3|
|Viscosity @ 100ºC, cSt, (ASTM D445)||12.5 to 16.3||n/a||14.0|
|Viscosity @ 40ºC, cSt, ASTM D445||n/a||90.2|
|Viscosity Index (ASTM D2270)||n/a||159|
|Viscosity @ -25ºC mPa s (cP) (ASTM D5293)||7,000 Max||n/a||5,244|
|Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800)||15 Max||14.2||14.6|
|Nitrogen μg/g (ASTM D-5762)||599 to 990||804.2||779.2|
|Calcium||1,570 to 2,460||2,051||2,355|
|Magnesium, ppm||6 to 46||12.3||11|
|Phosphorus, ppm||600 to 800||703||709|
|Zinc, ppm||766 to 868||791||837|
|Molybdenum, ppm||<1 to 269||60||41|
|Boron, ppm||<1 to 237||79||3|
|Silicon, ppm-d||3 to 9||5||4|
|Potassium, ppm||9 to 17||11||7|
|Titanium, ppm||<1 to 114||11||<1|
|Sodium, ppm||5 to 454||172||<5|
|Aluminum, ppm||<1 to 3||1||1|
|Iron, ppm||<1 to 1||1||<1|
b- Standards, shown in orange, 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 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.
forth a number
and engine tests
required to meet
an API SN ILSAC
alone cannot be
establish if an
engine oil meets
API SN, they can
be used to
determine if it
The following is a comparison of the test results for the sample of CITGO Supergard tested with the API SN ILSAC GF-5 requirements.
The viscometrics of the sample of CITGO Supergard tested meets the required targets for a 10W-40.
|FRONT AND BACK LABELS FROM PRODUCT TESTED|