United Plus Synthetic Engine Oil is a new passenger car motor oil (PCMO) that delivers the latest development of lubricating oil technology to maximize protection for the newest gasoline fueled englines. It meets the highest performance level of API SN and exceeds the most demanding requirements of modern engine's emission control and oil consumption standards. In today's energy conscious era, United Plus is also formulated to improve fuel efficiency for consumers.- Exceeds the highest U.S Lubricating oils standards for gasoline and LPG/CNG engines.- Silky smooth operation for all high performance engines.- Increases emission system durability and improves fuel efficiency.- Improves piston cleanliness and increases engine sludge protection.- Increases wear protection and extends service life.