Many people think that gas is gas no matter where or what you get. Many think it contains all the same ingredients and that all the grades (regular, supreme and premium) are the same no matter where you get it.

However, this is simply not true.

Ethanol-enriched fuel is becoming more common these days. A fuel mixture of 10 percent ethanol and 90 percent gasoline, usually referred to as E10, can be used in any car -- no matter what make or model -- with no modifications needed. There are tons of advantages to using ethanol-enriched fuel, including that it can save you money!

Ethanol is a clean-burning, high-octane fuel that is made from a renewable source such as corn. Ethanol is clean burning, so it will not leave dirty deposits in your engine or dirty up your valves.

This means it will keep your engine clean, giving you better fuel efficiency. It also makes your engine last longer because it helps the engine run more smoothly by eliminating knocks and pings. Plus, it can absorb moisture in the winter to prevent your gas line from freezing, thus eliminating the need for a de-icer additive.

Ethanol-enriched fuel is good for the environment, too. It reduces emissions and pollution and is biodegradable. It's also a renewable resource, unlike oil.

When a person stops at a gas station, there are usually three grades of gas: regular, supreme and premium. Regular has the lowest octane rating and premium the highest.

Because ethanol is a high-octane fuel, gasoline that is enriched with ethanol has a higher octane rating than gas that does not. And many times it may cost less than regular unleaded gasoline.

Though E10 has many advantages over gasoline, there are still those who are against it.

 Some critics say that ethanol fuel increases corrosion. However, tests have disproved this.

Another criticism is that you get less miles per gallon with E10 than regular gasoline. But while it's true that E10 might cause a slight decrease in mpg, it is not as significant as the loss of mpgs caused by using regular gasoline, which creates dirty valves, fuel injectors and other engine problems that decrease fuel efficiency.

Many gas stations, including BP, have switched all their fuel to E10. If they have, there will be a sticker on the pump indicating this. So if you want to use E10 fuel to help you, your car and the environment, then be sure to check for this sticker the next time you fill up.