I had a high-low-high tank that did pretty good. The first 300 miles were showing 40mpg on the SGII, then I put the snow tires ahead of a winter storm, got 8" overnight and had a miserable commute that took 1:25 vs. the usual 40-45 minutes. Worked hard the rest of the tank and today filled it up. 39.3mpg for the tank. Definitely solid performance given the dip and the tires. I'm dreading the coming winter and watching my mpg sink into the 36-38 range again, but such is the cycle of life.
