8.1L Chevrolet Avalanche 2500

I had an 8.1 Burb for a year. Used it to tow my 7000ish pound boat. I bought it used with about 115000 on the clock. Lots of interior rattles, and it would rather tow on the interstate in 3rd instead of 4th. Which is fine except as mentioned for the MPGs.

Over about 20,000 miles, its average was 9.84. Highest it ever got was 13, and the lowest (several tanks when towing at 70 MPH) was 7 MPG.