I checked my gas/oil ratio on numerous rides this season, from super deep days to days where I was just riding trail, the lowest oil consumption I measured was 26:1 and the highest was 19:1. To measure this I refilled at the gas station and filled the tank to the same spot each time and burped it in the same manner, then I filled the oil tank from a calibrated jug. These 850's use a LOT of oil, its kind of embarrassing how much oil they use.
I have an outboard motor from 1951 and it is supposed to be run on 24:1 premix, and somehow even though my sled is 67 years newer than this outboard motor it uses more oil? I love the sled, but it is disappointing how much oil it uses.