What Day Do You Get Gas?

Are you filling up on the Wrong Day? You should try to fill up your tank when it drops below half-full for optimal fuel efficiency. Driving around with an almost empty tank makes the remaining gas evaporate more quickly. The gas light is a warning system triggered when the remaining fuel in your tank falls below a certain level. If you fill your gas tank only on payday, you could be throwing money away. Monday is the best day to buy gas because it costs less. The most expensive day of the week to fill up? Thursday.