MaxiGuard Super Premium Motor Oil, API SA, SC, SAE 10W-40
Distributed by MG Lubricants, Inc., Old Tappan, NJ
Purchased in: Dollar Dollar, Elizabeth, NJ
Date of purchase: 9-27-2011
CONSUMER ALERT! - Issued November 18, 2011
Test Results on this sample indicate the product may cause damage to a passenger car engine.
CONSUMER ALERT: MaxiGuard Super Premium motor oil claims to be “SAE 10W-40” oil that is “a superior all weather motor oil made from the highest grade petroleum base stocks and designed to provide the finest performance” and “For all foreign and domestic cars.” The Petroleum Quality Institute of America's analysis does not support these claims. The viscosity results show this product is an SAE 10W-20, not a 10W-40. Further, the volatility result does not support the use of "high grade petroleum base stocks." In addition, the metal results show the oil lacks the appropriate levels of anti-wear and detergent additives required for modern engines. The analysis also shows high levels of iron, aluminum, and silicon, which indicates this product, may contain used oil. In addition to the test data, there are concerning labeling issues. The label claims API service SA, SC. These are obsolete Service Categories the API cautions can cause harm to engines built after 1967. The label does not warn consumers of this limited use.
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
|TBN, mg KOH/g, (ASTM D2896)||6.1 to 8.3||7.2||0.6|
|Viscosity @ 100ºC, cSt, (ASTM D445)||12.5 to 16.3||n/a||6.4|
|Viscosity @ 40ºC, cSt, ASTM D445||55.8 to 65.2||n/a||39.42|
|Viscosity Index (ASTM D2270)||156 to 169||n/a||113|
|Viscosity @ -25ºC mPa s (cP) (ASTM D5293)||7,000 Max||n/a||5,509|
|Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800)||15 Max||14.2||27.7|
|Nitrogen μg/g (ASTM D-5762)||599 to 990||804.2||294|
|Calcium||1,570 to 2,460||2,051||185|
|Magnesium, ppm||6 to 46||12.3||16|
|Phosphorus, ppm||600 to 800||703||175|
|Zinc, ppm||766 to 868||791||31|
|Molybdenum, ppm||<1 to 269||60||2|
|Boron, ppm||<1 to 237||79||3|
|Silicon, ppm-d||3 to 9||5||186|
|Potassium, ppm||9 to 17||11||17|
|Titanium, ppm||<1 to 114||11||<1|
|Sulfur, ppm||5,000 max||2,785||4,304|
|Sodium, ppm||5 to 454||172||20|
|Aluminum, ppm||<1 to 3||1||223|
|Iron, ppm||<1 to 1||1||200|
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 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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The following is a comparison of the test results for the sample of MaxiGuard tested with the API SN ILSAC GF-5 requirements.
The viscometrics of the sample of MaxiGuard tested do not meet the required targets for a 10W-40.
|FRONT AND BACK LABELS FROM PRODUCT TESTED|