I almost always fill the tank. Back in the mid-60's, though, is was commonplace to pull in for $2 worth, which was usually enough to get around town for most of the week with gas being somewhere between 20 and 30 cents a gallon. My first new car was a 1965 Chevelle SS and I put "Hi-Test" in it and that, as I recall, was a whopping 32 cents a gallon. Oh, for the good old days..., wait a minute... I was only making $1.10 an hour... forget it!