Congratulations! This board is a great resource and there are lots of great ideas here for even better mileage. I'm a new hch II owner too, just had a 55.0 mpg run from San Antonio to Dallas ... having the wind at your back makes a huge difference, and temps of 70-75 were perfect, too.

Then you read about what some of the other folks here do with their 60mpg average, but anything around 50 is good in my book. Beating the EPA is cool.