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Gasoline FAQ

Here are some frequently asked questions about gasoline, the liquid that powers America's transportation system. Some of the FAQ perain to octane, lead, emissions, and the pricing.



Frequently Asked Questions about Gasoline

Q: Why do we use unleaded gasoline?

A: The original formula for gasoline contained lead, a pollutant. When America decided it was time to reduce air pollution, they began equipping cars and trucks with catalytic converters to help cleanse the exhaust from vehicles.

Leaded gasoline contaminates and essentially ruins catalytic converters so the unleaded recipe for gasoline was unveiled. All gasoline sold in the United States is unleaded with the exception of some aviation fuel.


Q: should I use higher octane gasoline in my car or truck?

A: higher octane gasoline costs more than lower octane gasoline. This is mainly due to the cost of production. It takes more expensive ingredients to formulate high octane fuels when compared to low octane fuels.

You should use the lowest octane gasoline that is recommended for your particular vehicle or the lowest octane gas that will allow your vehicle to run without any engine knock.


Q: Are higher octane fuels better for gas mileage?

A: No they are not. It is a common misconception to believe that a higher octane gasoline will increase your vehicle's gas mileage. Octane is simply a number that reflects the fuel's ability to resist engine knocking. It has nothing to do with the performance of the vehicle in terms of mileage.


Q: Are the brands of gasoline different from each other?

A: Yes they are definitely different and they can make a difference in the way your vehicle's engine performs. Manufacturers of gasoline combine hydrocarbons in unique recipes.

The differences in the way that gas is blended can affect the responsiveness of the fuel in your engine as well as the feel of the engine during acceleration. It is entirely possible that a certain brand of gasoline can make a noticeable difference in the driving characteristics of your car or truck.


Q: Is there water in gasoline?

A: There is no water is gasoline intentionally, but water makes its way into gasoline after production. It is usually a result of moisture collecting inside a gas tank, condensing, and dripping into the fuel.

It mixes with the fuel to create a watered-down version of the gasoline you would hope to burn in your engine. Water in the fuel results in decreased performance.


Q: Why does gasoline smell?

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Q: Is gasoline toxic if swallowed?

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Q: Are there other uses for gasoline besides fueling engines?

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Q: Where does gasoline come from?

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Q: How do I tell which gasoline is best for my car or truck?

A: Be a hero and answer this.



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