The Petroleum Quality Institute of America (PQIA) posted tests results on six brands of engine oil recently tested. The results conducted on five samples meet the requirements for their labeled API Service Category and SAE viscosity grades. PQIA says, one sample, however, “raised eyebrows before the test results were even in.” That sample is for U.S. Economy Motor Oil 5-30.
The label on U.S. Economy Motor Oil 5-30 fails to state either the products viscosity grade or its API Service Category. In addition, whereas this brand states on the front label in large print “5-30,” the bottom of the back label says,” This is not a 5W-30 oil.” Clearly the “5-30” on the front label can mislead consumers to believe the oil meets the SAE 5W-30 viscosity grade.