Maxima's SXS Engine is a full synthetic, ester-fortified 4-stroke engine oil specifically formulated for Side-By-Side (SXS) engines. Synthetic, oxidatively-stable formulation combines surface-active esters with a shear-stable polymer system to provide excellent film thickness and viscosity stability across all operating temperatures. Advanced, proprietary additive system reduces temperatures and increases power output while keeping your engine running clean, trouble-free and extending the life of the machine.