2008 Polaris ATV Outlaw 450/525 Service Manual, Page 184Get this manual
2-3 Engine oil
JASO T903 MA
Synthetic 2W-50 Engine Oil
Only use fully synthetic engine oils that meet the JASO MA quality specifications (see information on the container)Polaris recommends PS-4 Plus 2W-50 Synthetic Engine Oil PN 2876244 (Quart) PN 2876245 (Gallon)