All poos I owned in past drank gas like crazy. That's one reason we went over to skidoo for etecs and 900 ace machines.  Now Polaris is back in game. Me and my son rode today. Rode just under 100 kms used 15 L of fuel on a Polaris 660. We rode trails, drifts, roads and ditches. Just under 300 kms on a tank of fuel is possible. Ideal conditions be over 300. Still on my first jug of oil I think it's 3.6 L or so. Just passed 700 km mark and haven't used whole jug yet. 

I hope it works out; but if it doesn't I'll buy your bottom bracket. I want to put a bracket on a Pelican case. I think it would work. 

Quite a while ago we had some rented poo 550 fans in the group and they drank the gas like crazy, it was insane.  many years ago I rented a sled before I bought and was a fan 550, same thing, just a pig on gas.  I think one of the guys had a poo 600 liquid and huge difference in gas, his was much better.  but I agree, I’m sure he was having a blast and he was either WOT or off. 

I dont think it would matter fan or liquid, not sure of the boys age, but when I was young, and dumb, I was aways  on the throttle not matter what! , part of the passage ! many great rides!

Just as you said, up through the 80’s, D to the 303, lunch at Edgewater, 303 to  D123, into Kearney, back to D, back through 80’s and across buck lake, down D to 88, took that out to hwy 11, filled at Ultramar, lake back.   Everything was awesome