U.S. Economy Motor Oil 5-30
GMD Inc., Chicago, IL
Purchased in: Sunny's Foodmart, Jacksonville, FL
Date of purchase: 11/27/2011
Consumer Alert: U.S. Economy Motor Oil 5-30 states on the front label in large print "5-30", which may mislead an average consumer to believe that the oil meets the "SAE 5W-30" viscosity grade. PQIA's test results show this oil is not a 5W-30, but rather is a 10W-30 or 15W-30 oil. The labels go on to state "5-30 means the viscosity range from 5 to 30" but does not define the units, and at the bottom of the back label says "This is not a 5W-30 oil." Therefore the labels give the consumer no clue as to the actual viscosity or viscosity grade of this oil, other than it is not a 5W-30.
The back label states "Always consult your owner's manual for proper service requirement," but does not say what service requirement or viscosity grade this oil meets. While the labels state "For older cars" and "for top off only," many consumers may not understand these vague and undefined terms. In addition, the analysis of this oil shows unusually high levels of silicon, potassium, and iron which may indicate contamination with anti-freeze or used oil.
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.
|TBN, mg KOH/g, (ASTM D2896)||6.1 to 8.3||7.2||n/r|
|Viscosity @ 100ºC, cSt, (ASTM D445)||9.3 to 12.5||10.5||9.7|
|Viscosity @ 40ºC, cSt, ASTM D445||55.8 to 65.2||61.88||65.2|
|Viscosity Index (ASTM D2270)||156 to 169||160||131|
|Viscosity @ -30ºC mPa s (cP) (ASTM D5293)||6,600 Max||5,775||18,586|
|Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800)||15 Max||14.2||n/r|
|Nitrogen μg/g (ASTM D-5762)||599 to 990||804.2||n/r|
|Calcium||1,570 to 2,460||2,051||884|
|Magnesium, ppm||6 to 46||12.3||64|
|Phosphorus, ppm||600 to 800||703||650|
|Zinc, ppm||766 to 868||791||512|
|Molybdenum, ppm||<1 to 269||60||37|
|Boron, ppm||<1 to 237||79||85|
|Silicon, ppm-d||3 to 9||5||16|
|Potassium, ppm||9 to 17||11||39|
|Titanium, ppm||<1 to 114||11||2|
|Sulfur, ppm||5,000 max||2,785||3,276|
|Sodium, ppm||5 to 454||172||19|
|Aluminum, ppm||<1 to 3||1||4|
|Iron, ppm||<1 to 1||1||19|
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.
|U.S. Economy Motor Oil 5-30|
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 U.S. Economy 5-30 tested with the API SN ILSAC GF-5 requirements.
The viscometrics do not meet the required targets for a 5W-30.
|FRONT AND BACK LABELS FROM PRODUCT TESTED|