Shit I donno. I would say depending on my drving, I will put in a qt. I think that is the size, every 2 weeks to once a month. My driving consists of, school every day, work, which should not even count. Delivery driving once a week. 5 deliveries in 6 hours. And soon hockey is to start which is to Easton and back Tue, and Wed, Fri, and Sun. games, which go as far as Athens, as short as Easton.
I also have a trip to the hookah bar about once a week which is downtown.