Fill up efficiently. This involves three things:
- Fill the tank full. If you need to fill up, fill up all the way. The more money you try to save by adding $10 today and then $20 tomorrow will be wasted since each time you will have to travel to the station and wait for a pump. Instead, do it all at once to save time and money.
- Don't top up your tank between fills. It is wasted money and bad for the environment because it invariably forces liquid fuel into the evaporative emissions system where it overwhelms circuits that are supposed to only route fuel tank vapors to the engine while it is running and can be burned.
- Wait until you have a quarter tank but don't push this any further. Doing this can extend your gas mileage because you are hauling a lighter fuel load. It also gives you the opportunity to buy more gas if you run across a bargain. However, in cold weather, you run an increased risk of condensation in the fuel tank. Running a car with less than a quarter tank can shorten the life of the electric fuel pump and running on empty will often destroy the pump.