You are likely among the few here that remember pulling into a station and saying, "A dollars worth, Please". (That would get you 7 to 9 gallons). Or even, "fifty cents worth, Please".
As a kid, I worked weekends at a Webb Oil station and there was a gas war going on......I pumped a hell of a lot of $0.17/gal gasoline while I was making a buck an hour. So that buck I made would buy 6 gallons of gas for my 53 BelAir.