Bel Ray ATV & SxS Synthetic Engine Oil For an oil designed to meet the demands of today's modern Atv, Utv, and SxS machines, consider the purpose-formulated ATV & SxS synthetic engine oil from Bel Ray. Features: Synthetic formula developed specifically for the demands of Polaris Atv, UTV & SxS's High viscosity index for improved protection in high temperatures Wear protection that helps to extend engine life Improved oxidation resistance Wet clutch compatible