I'll try to explain it, Einstein. 4x4 has a 19 gal tank, SUV has a 19.5, and my main car has a 20, I alternate between all of 3 them usually or ride with the wife in her car. Unless Im traveling with my work once a month then Im just running around town and I might fillup about once a month or so in each.Don't really have anything to say. I just wanna sit here and admire this one...