2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 22Get this manual
MAINTENANCE ENGINE
Engine Oil Level
Polaris recommends the use of Polaris PS-4 PLUS synthetic engine oilAlways use PS-4 PLUS engine oilOil may need to be changed more frequently if Polaris engine oil is not used
Engine Oil and Filter Change
Always change engine oil and filter at the intervals outlined in the Periodic Maintenance ChartAlways change the oil filter whenever changing the engine oil123Position the ATV on level surfacePlace the transmission in parkStart engine and allow it to run for two to three minutes until the engine is warmStop the engineClean the area around the drain plug
Mixing brands or using non-recommended engine oil may cause serious engine damageAlways use the recommended engine oilNever substitute or mix engine oil brands1Locate the engine oil dipstick on the left side of the ATV