I have gotten as much as 17.846 gallons in the tank before, but for some reason I really could not get more than 17.777 in this time. I also did not really try that hard to fill the neck full. I just went to the next dollar after it clicked off, I might have even skipped the first even dollar and gone to the second.

This morning, I added a full gallon after the nossle hit the auto stop. (I only put in 16.433 gallons. Man, I still had 60 miles till I was empty!)