my best was about 350 or so. Last tank was 246 (towing a trailer for most of that tank), usually around 300 or so.
What bites is my brother just got back from a trip to Tahoe. He's driving a 2007 GM 1500HD w/6" lift and 37" tires. His average mpg for the whole trip was ~15.5 mpg. As good or better than my H3. wtf?
