A contributor on Dodge diesel and Airstream boards (VernDiesel) has covered over 400,000 miles in his EcoDiesel. Averages 28-30/mpg at 65. Above 20 at 80-mph. And the same as I see with my CTD & 35’ Silver Streak: 14-16/mpg pulling Airstream trailers (he does dealer deliveries outbound from near that plant, and backhauls as available).
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