I have been looking into the fuel mileage of my 2006 Chevy Duramax being so low. Less the 12 mpg in town and less them 15 on the road. I an a conservative driver. The 14.9 mpg was using the cruise con...
Actually using cruise control is NOT the best way to get good mpg as it will try to keep the speed constant regardless of the terrain, wind, or road conditions. This, of course, means that the throttle is being constantly manipulated which in turn means more fuel is being added during hills, overpasses, head winds, etc. Better to keep the throttle at a constant position and letting the speed decrease when needed.
Ron
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