every make ,model,and the size of gas tanks of car and truck will get different mileage.also roads traveled will make a difference.
but in general what kind of mileage per tank of gas. do you get on you personal car or truck on avg. when doing driving highways on trips.
i get like 300 miles a tank of gas on my 2002 Saturn vie between gas fill ups.
(I'm not asking or care what your miles per gallon is. or what a manufacturer claims your car should get on a tank of gas.
im asking what you have found is the normal for your car when you drive it.