What oil do you use on a 335 polaris sportsman?
Polaris recommends using Polaris PS-4 Full Synthetic ATV/UTV Engine Oil (10W-50) in the 335 Polaris Sportsman. This oil is specifically formulated for use in Polaris ATVs and UTVs and provides excellent protection against wear, corrosion, and high temperatures. It also contains detergents and dispersants to keep the engine clean and free of sludge. If the PS-4 oil is not available, you can use a high-quality 10W-50 synthetic oil that meets or exceeds API SL/JASO MA specifications.