What kinda oil can i use i live in maine. my friend uses 10w-40 in his 400ex

 

Here's a link to a Predator 500 owners manual.Oil changes come quick on these same as the Outlaw.Of course the manual says Polaris PS4, but a lot of people have used 0w40,5w40 Rotella(no friction modifiers) or cycle specific oil with out modifiers because of this internal clutch system. If any oil says "energy conserving" I'd by pass on using it for the Predator. http://cdn.polarisindustries.com/pol...9918783r01.pdf