well i have been running penzoil since i had a old 600 triple sled that ran 9200 rpm and never had a problem with it and i run it in my 400 but what do you think i should run in there???

 

I think the Polaris oil is good oil(maybe a little expensive though) a lot of people also like amsoil too

 

I feel the pure polaris oil is good but expensive, and think about it cause it's not like polaris is making there own oil and filters right?

I use mobil brand oil in everything motorized that I own, I went to autozone and bought the mobil 1 0w40 synthetic oil and cross referenced the polaris oil filter to a wix then crossed that number to an stp oil filter which was $2.79 thats better than the $14 that polaris wants. but mobil is great oil and is about 50 cents cheaper than the pure polaris.

 

if ur premixing run the polaris blue...it aint that expensive but it runs great in my engine