This could be all wrong, but it's how I look at it and it usually turns out pretty close. We are looking for about a 50-1 gas/ oil mixture mixture, right? That would be a quart for every 12 gallons. If your sled is getting somewhere around 10 miles to the gallon (keeping it easy to follow in your head), that would figure out to about 120 miles on 12 gallons. At that point, IF your sled is getting 10 miles to the gallon, your sled should take a quart of oil. 9 miles to a gallon would work out to a quart at 96 miles. Most of the oil pump calibrations I've checked are almost alway rich. Don't know of a good reason why they are doing this, and spending big money on research for the development of lower emissions at the same time. SEEMS LIKE THIS WOULD BE A GOOD PLACE TO START !
AL