Ester-fortified, 4-stroke engine oil formulated specifically for SXS engines Superior protection and oxidative stability at any temperature Reduces temperature and increases power output Shear-stable, ester-fortified formula maintains oil viscosity and film thickness Surface-active chemistry aggressively attaches to engine surfaces and keeps them clean Made in the U.S.A.. OIL UTV4T SXS 5W40 SYN 1L