Have a new 06 cf7 Went to the UP this weekend and put on 628 trouble free miles. Motor was very strong and did not miss a beat. Gas mileage was 12.5 did not get oil ratio. The group I was with had two 900 and one 700 Polaris's and I won the fuel mileage at each fill up thru out the trip which I am very pleased with because in the past I would always seems to get the worst mileage with my cats except for my sons F7. The oil could be running a tad rich but was not excessive. Top speed was around 105 on speedo on hard packed road. Overall a very nice sled a I am pleased. Some of the mods I have on it are speedwerx clutch kit and fatty daddy pipe, injector perfector, 108 studs, powder pro skis, and large diameter air intake.