2009 Polaris Outlaw 450/525 Service Manual, Page 27Get this manual
MAINTENANCE ENGINE AND TRANSMISSION
Engine Oil Level
Check the oil level before each use of the ATVIf the engine is cold, the oil level should be visible at the lower edge of the sight glassIf the engine is warm, the oil level should be visible in the middle of the sight glass
Engine Oil and Filter Service
IMPORTANT: Polaris PS-4 Plus (2W-50 Synthetic) engine oil is recommended for use in the KTM engineThis engine oil was specifically designed for the KTM engine and clutching systemOther oils do not contain the needed additives to prolong engine life and provide proper lubrication to the KTM clutch and transmission components
Sight Glass
Mixing brands or using non-recommended oil may cause serious engine damageAlways use the recommended engine oilNever mix brandsIMPORTANT: Always change both oil filters and clean both oil screens whenever changing oil12Position the ATV on level surfaceStart the engineAllow it to idle for two to three minutes until warm, then stop the engineClean the area around the crankcase drain plug with clean shop towels