Things to remember to help you get better gas mileage

 

1) Only buy or fill up your car or truck in the early morning when the ground temperature is still cold. 

 

Remember that 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 gallon. In the Petroleum business, the specific gravity and the temperature of  the gasoline, diesel and jet fuel, ethanol and other petroleum products all play an important role.

A 1-degree rise in temperature is a big deal for this business. But the service stations do not have temperature compensation at the pumps.

2) When you're filling up do not squeeze the trigger of the nozzle to a  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 pumps have a vapor return. If you are pumping on the fast rate, some of the 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) One of the most important tips is to fill up when your gas tank is HALF
FULL or HALF EMPTY.  The reason for this is, 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. Unlike service stations, every gasoline deleivery  truck that is loaded is temperature compensated so that every gallon is actually the  exact amount.

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.

Hope this will help you get the most value for your money. 

Could not resist the "when your gas tank is HALF FULL or HALF EMPTY."
Didn't know filling up at the gas station could reveal part of  my personality.

Is this advice brought on by the Canadian dollar above par with U.S.? Now I can get a two cent break on milk, cheeze, eggs and gas on my  commute home from  "work".
Being a ""tank half full" kind of a guy, I'm gratefull I can also get a break on my oil as prices are adjusted to come closer to U.S. prices.