Maxima SXS Engine 5W-40 is an ester-based full synthetic 4-cycle engine oil optimized for extended protection in modern side-by-side vehicles. SXS Synthetic Engine blends a unique balance of surface active anti-wear and extreme pressure additives with high quality synthetic base oils to ensure smooth, trouble-free operation for extended periods of time. Lowers operating temperatures and increases power output through its technologically advanced additive system – lowering friction, minimizing wear and offering unsurpassed engine cleanliness. Shear stable polymers resist mechanical breakdown of the engine oil giving excellent stay-in-grade performance. Meets or exceeds JASO MA specifications and API SL/SJ/SH/SG