Power question

Ok Folks,

I have a 2012 RZR4 800 RG and yesterday was my first time out on the trail. The unit did great all day and i had a awesome day in the snow and rocks, but it seemed to be light on power. It also started making a chirping nose on the and a smell of heavy oil like a gear oil. Any thoughts? :scared2:

I didn’t see any leaks and there was no oil on the trailer when i got home