How many miles....
Depends if you are running the tank all the way down or if you are filling up at 1/4 tank. I've got a super-cab with the 35.7 gallon tank, and I've already gone 550 miles on a tank. It all depends on when you fill it up. Your numbers seem about right.
I have a supercrew and mostly drive on hightway. I ususally put in about 23~26 gallons at fillup and get between 350-390 per tank. The computer says I should get 450 a tank but I never push it. Don't like the idea of sucking the junk off the bottom of the tank. It seems that gas is sucking butt right now anyway.


