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Motor Oils for Classic and Vintage Cars

Posted by Thomas F. Glenn, President PQIA on Apr 20th 2021

April 15, 2021 By Thomas F. Glenn, President PQIAThe Petroleum Quality Institute of America has from time-to-time encountered motor oils containing high levels of a multifunctional oil additive calle … read more

Above and Below Average

Posted by PQIA petroleum Quality Institute of America on Mar 22nd 2021

A look at some of the elemental differences between the API SN, SN PLUS and SP Service CategoriesThe API SN PLUS Service Category was introduced as a supplement to the API SN specification in 2018 to … read more

Read the Labels on Motor Oil Before You Buy

Posted by THE PETROLEUM QUALITY INSTITUTE OF AMERICA​ on Feb 11th 2021

Know how to read the labels and what to look for on both the front and back labels of the motor oil you buy, or you may be using product that can cause unsatisfactory performance or damage to your e … read more

​What Type of Motor Oil Is Best for Your Car?

Posted by Automotive Consultants Group, Inc on Feb 1st 2021

OWNER'S MANUAL RECOMMENDATIONSVehicle owner’s manuals give motor oil recommendations based on what works best with the engines made by the company. Choice of viscosity grades is usually provided depen … read more