For 4 decades, I've filled up the gas tank in whatever I was driving several times a month.
But lately my driving has been reduced so much that if I fill it all the way up, the gas might start going bad by the time I use it.
So yesterday I put in 8 gallons. That should be good for a month or two.
It reminds me of when I was 16 and only put in a few gallons because that was all I could afford