Polaris What Oil do we use in our Z1 Motor?

[Sandsportsunlimited.com]

Hey Guys

I have been looking at the Snowmobile websites and they recommend using Synthetic 0W-40 motor oil

I assume that is because of the Cold Weather... What should we be using here in the Midwest?

I always ran Mobile 1 Synthetic 15W -50 on my turbocharged Redline.... Will that work and be OK?

Any Help would be appreciated...