Do You Make This Mistake at The Gas Pump?

By: Scott Siegel

The costly mistake many drivers make when filling their car with gas is to overfill it by topping it off. When the gas pump nozzle clicks off, do you stop or do you keep pumping? Are you trying to add more gas your tank after the shutoff trying to stuff as much in as possible? Are you pumping more gas after the shutoff to round your total cost to the nearest full dollar amount? If either of these scenarios are true, or if any other reason causes you to top off your tank you have developed a bad habit that is costing you money and is contributing to air pollution.

In many areas, a gas station's pumps have vapor recovery systems that recover gas vapors to keep those vapors from getting into the air. If you top off your gas tank it will result in you paying for gas that is drawn back into the gas station's vapor recovery system.

The extra gas you are trying to pump into your tank may just be drawn into the vapor line and back into the station's tanks. That means that you will be paying for gas that is not going into your car but is going back into the gas station's storage tanks. Of course the effect of this is to raise your cost of gas.

When you overfill your tank there is a good chance that gasoline will evaporate or will be spilled. Both of these costs you money for gas that is not getting into your car. That is not good for your wallet.

There are more bad things that can happen when topping off your gas tank. Gasoline expands as it gets warmer. This is certainly important in the summer or in climates with warm weather. Gas in the station's underground tanks will be cooler than the air. As the gas in your tank warms up it expands. As the gasoline expands it needs more room.

If you top off your tank, there is no room for the gasoline to expand. What then happens to the expanding gas? It might find it's way into the vapor collection system of your vehicle. This will easily foul the system causing it to work poorly.

The fuel that expands is lost gasoline that you have paid for. You paid for gas that you are not able to use. The result: your cost of gasoline goes up. But that is not the end of your increased costs! If the expanding fuel ends up in your car's vapor collection system it will negatively affect the system. If that occurs your vehicle will become much less efficient.

A car that runs inefficiently means that you will use more gasoline which means you will spend more money on gas. Thus you are hit doubly in the wallet, once for the gas that you loose directly and second for the extra fuel your car burns because it runs inefficiently. Ouch and double ouch!!

Gas vapors are a major factor in adding toxic pollutants such as benzene to the air. This contributes to bad ozone days. Gas vapors are bad for your health and harmful to breathe. When you top off your tank you will end up with vapors released into the air. When this happens you are breathing in toxic fumes.

When you next fill your truck or car, when the pump automatically stops don't add any more fuel, your tank should be full enough. Don't top it off, don't overfill it. Not only will you be saving money but also helping your own health and helping the environment!

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Scott Siegel has written a 143 page manual of industry insider secrets on saving gas and money at the pump. Visit us to learn how you can increase fuel economy. Find out how to save gas.
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