1. Only fill up in the early mornings or late evenings when it is cooler.
All service stations have their storage tanks buried below ground. The colder the ground the more dense the gasoline, when it gets warmer gasoline expands, so buying in the afternoon or in the evening….your gallon is not exactly a
2. When you’re filling up do not squeeze the trigger of the nozzle to the fast mode.
If you look you will see that the trigger has three (3)stages: low, middle, and high. In slow mode you should be pumping on low speed, thereby minimizing the vapors that are created while you are pumping. All hoses at the pump have a vapor return. If you are pumping on the fast rate, some other liquid that goes to your tank becomes vapor. Those vapors are being sucked up and back into the underground storage tank so you’re getting less worth for your money.
3. Fill up when your gas tank is HALF FULL or HALF EMPTY.
The more gas you have in your tank the less air occupying its empty space. Gasoline evaporates faster than you can imagine. Gasoline storage tanks have an internal floating roof. This roof serves as zero clearance between the gas and
the atmosphere, so it minimizes the evaporation.
4. If there is a gasoline truck pumping into the storage tanks when you stop to buy gas, DO NOT fill up.
Most likely the gasoline is being stirred up as the gas is being delivered, and you might pick up some of the dirt that normally settles on the bottom.
5. Keep tires properly inflated.
Keep tire air pressure at the level recommended by your vehicle manufacturer. A single tire under inflated by 2 PSI increases fuel consumption by 1%.
This post is dedicated to my dad–a gas saving guru. His number one tip would be:
6. Buy high quality gas (not high octane, but quality).
My dad’s #1 place: BP. (BP also comes from non-Arab sources.) It might cost a few cents more per gallon, but in the long run it saves. We’ve tested and proven this–our car gets more MPG on BP gasoline than on the quick stop or Kangaroo gas store.
Thanks to my husband’s family for sending along these tips! You can find other gas-saving tips here.