Super S Mult-Flo Motor Oils are premium quality, passenger car motor oils (PCMO) that meet the latest automotive manufacturers’ requirements of API SN. Super S Multi-Flo Motor Oils, through the use of highest quality base stocks and up-to-date additive technology, are formulated to provide the highest levels of equipment protection available. Grades 5W20 and 5W30 are Synthetic Blends; 5W20, 5W30 and 10W30 meet the requirements of “resource conserving” and ILSAC GF-5 ratings. Every load of API oil is fully tested in our lab, and all manufacturing and packaging is monitored full-time for quality assurance.