Wednesday, June 24, 2009

Gas Saving Tips


I was reading an old Article from CalTrader on saving money at the gas pump.

Here are the three main tips-
1.Fill up in the morning when the outside temp is colder,(gas condenses at colder temps, so you get more bang for your buck as opposed to buying the middle of the day when its hot)
2.Fill up with the nozzle at half cock instead of fully pressed down,(less vapors escape when the filling rate is slower)
3.Fill up when your gas tank is 50% empty,(gas will evaporate faster if there is more air in the gas tank)

The facts from CalTrader-

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 plays an important role.

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

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 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.

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, here where I work, every truck that we load is temperature compensated so that every gallon is actually the exact amount.

1 comments:

Anonymous said...

I also found some information on how to save gas and it turns out that it is good for the environment and you know we need to do everything we can to protect our environment. It says it increases gas mileage, reduces toxic emissions, improves performance -- and it's good for gas and diesel engines. You can read about it at http://www.btfuelsavings.com. I'm going to give it a try -- it can't hurt.

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