Baffling mileage numbers
I've been keeping track of my mileage religiously since I first bought my 2004 Excursion 6.0, both on paper and now with a phone app. Over the course of my ownership, I've averaged about 16MPG both hwy and city. I know that my hwy average is based on my speed, but when I do about 72MPH, I get around 17.5MPG. When towing my trailer (about 7,000lbs or so) I get 12.5 while doing 65MPH.
So here's what's baffling to me. I had to make a trip this weekend pulling the trailer part way and then continuing, and eventually going back to get the trailer. Total mileage was 420. I pulled the trailer 140 miles doing about 65MPH. I drove without the trailer, at 82MPH for 140 miles. I drove back to the trailer, 140 miles, at 70 MPH. I fueled up before picking up the trailer and heading home. Average mileage for the trip was 15.25MPG. The whole way was full of hills, so it's not like I had a lot of downhill. Plus, the pulling and 82MPH should have absolutely killed my mileage. I don't get it. Do you think I just had a hell of a lucky day and the wind happened to be with me at the right times? lol
2004 Excursion 6.0
New HPOP/HPO system o-rings; Updated standpipes and dummy plugs
EGR delete; Rebuilt oil cooler; CCV collection mod
VR Black Diamond head gaskets and ARP studs
Oil and coolant bypass filters; Shell EC-1 coolant
Rebuilt turbo; 250 amp alt; 6000 watts of brain scrambling
One giant 240 pound English Mastiff riding shotgun!