Full synthetic 4-cycle engine oil for extreme duty applications. Provides the ultimate high temperature engine protection and the ultimate in rust & corrosion protection. Designed for professional grade & high temp 4-cycle Polaris® ATV, RANGER®, and Polaris® RZR® applications. 10W-50 viscosity grade recommended for use in ambient temperatures of 0°F to 130°F. Sold by the Quart. This is the oil we recommend for use in the extreme temperatures of summertime engines and especially the turbocharged RZR.