Mileage on Dutchmen 34H Diesel after 20 months January 14, 2011, 04:25:55 pm Yahoo Message Number: 6246Everybody Asks - I track it pretty carefully.......9953 Miles Currently - Not even broken in yet2770 Miles at Delivery7183 Miles Driven745 Gallons of Diesel Consumed9.64 MPG Overall13.6 MPG Best Tank12.8 MPG Next Best Tank7.9 MPG Worst Tank - lost of around town use9.15 Average TOWING (2400# Geoo Tracker or 6500# 8.5'X20' Trailer)I usually run 65 MPH - its very hilly here is SoCal and getting out of the surrounding areas. We go up to Big Bear, out to the desert etc. Quote Selected