Just came back from a trip from detroit to atlanta, 3 adults, two kids, 1 dog, and about 600 pounds of stuff in the bed(don't wan't to do that again!). Driving 70 plus mph and on the way down averaged 16. 5 to 18. 3 on overhead. Slightly less on the way back. 2200 miles on the truck right now and averageing around 15. 3 in the city. Did feel the 70 mph vibration but wasn't that bad. Hoping to get a little better fuel numbers but not bad for almost 7000 lb. vehicle.
. Hand calc numbers were slightly higher.
