http://www.pqiamerica.com/PittPenn4-2010.htm
Advisory: Whereas the label on the PittPenn Quality Motor Oil bottle sampled does not say the product meets API SM ILSAC GF-4, its positioning on the shelf at a recognized retail chain, use of terms "API" and "Quality" on the label, and lack of information specific to the API Service level the product does meet, could result in a reasonable person assuming this engine oil can be used in their vehicle as long as the vehicle is not new. Based on the test results for this sample, this could be a dangerous assumption.
Although PittPenn Quality Motor Oil does meet the SAE requirements for a 10w30, it does not meet the requirements for an API SM ILSAC GF-4 engine oil. The product's volatility of 22 exceeds the maximum of 15, and the phosphorus content at 161ppm is below the 600 required to meet API SM ILSAC GF-4. In addition, whereas there are no API requirements for some of the other parameters examined, the data shown for TBN, calcium, and zinc are only 10 to 20% of what one would expect to see in an engine oil meant for use in virtually any passenger car currently on the road.
Also of concern is the 26ppm of silicon in the sample. Whereas silicone antifoam agents are commonly used in engine oils to suppress and inhibit foaming, the concentration of silicon attributed to antifoam agents is typically less than 1ppm in an engine oil. Concerning is that high silicon levels can be an indication of abrasive contaminants in a lubricant. A silicon level of 26ppm in a used engine oil sample, for example, typically results in a recommendation to change the oil due to the likelihood of abrasive contamination.
As a matter of standard operating procedure, the Petroleum Quality Institute of America attempted to contact PittPenn to discuss the sample data. The company's telephone is disconnected.