im using 40% 110 and 60% 91. so for a 10gal tank 4gal 110 6gal 91.
i just mix it in the sled tank.
im usually riding between 6 and 9 thousand feet.
i bought the sled from my neighbor and he said to use that ratio. worked fine for me last year, in utah and jackson hole.
any suggestions on how i should be doing this would be greatly appreciated.