Full Synthetic Oil Change Kit PS-4 Extreme 0W-50 Engine Oil, Certain RZR, Ranger, General and XpeditionPolaris Oil Change Kit 2890057 PS 4 EXTREME Advantage: Polaris PS 4 EXTREME is made specifically for Polaris 4 cycle engines to maintain peak performance longer than automotive and other powersports oils. PS 4 EXTREME has delivered unmatched engine protection and the ultimate engine performance even in those grueling high temperature, harsh applications. With over 2 million miles of field and dyno testing, only Polaris Lubricants are specially