Duramax vs Power Stroke Fuel Economy Tow Test and Drag Race

"He ran just short of 60 miles (55 ) without towing and averaged 23.2 mpg."

I thought "incredible" driving my new 11 HO DRW for the first time with 13 miles looking at the instant and average mileage. Fact is I didn't see those numbers after a few hundred miles.

I do hope those numbers hold true but I doubt it.