Roy W
12-30-2012, 13:13
It's been quite a while since I checked the unloaded highway fuel mileage on my '05 LLY (118K), so knowing I was going on a trip over the holidays, I figured this would be a good time. I normally fuel from my auxillary tank, and gallons used in that case is only a guess, so I filled up the truck tank and got on the interstate. I put the cruise control on and held a steady 75 mph (gps). RPM was 2200, engine temp was 180 degrees (45 degrees ambient), boost was a constant 4 psi, and the Edge EZ was set on #1. After 272 miles (gps), I pulled over and filled up and it took 15.5 gallons, which comes out to an average of 17.5 mpg. I thought that was pretty good. How does it compare to others ??