ARCTIC CAT OIL CHANGE KIT-PROWLER 500 & LEGACY15W50Description Full Synthetic 15W 50 Wet clutch certified Heavier viscosity formula of the original, proven Synthetic ACX 4 Cycle oil Formulated specifically for hot weather use 15W 50 Synthetic oil provides ultimate hot temperature engine protection and prevents thermal breakdown of the oil in conditions such as but not limited to: Ambient Temperatures of 80F+ Racing Aggressive Driving Styles where constant higher RPM is used Construction Farm Ranch