Your car's air filters are important components in your vehicle. Studies conducted over the past two decades demonstrate that the exposure of the passengers inside a car to the dangerous air pollutants including respiratory irritants,neurological agents,volatile organic compounds,carbon monoxide and carcinogens is significantly higher than that of bicyclists,pedestrians and public transfer riders. Increased exposure to these pollutants can produce serious health problems.

Almost all the pollutants can irritate the eyes,nose,and respiratory systems of people exposed to them. They also may hinder the development of fetuses and infants. Studies indicate that the elevated levels of auto exhausts can also suppress the immune system,making human beings more vulnerable to colds,influenza,and other respiratory conditions like asthma. Car air filters purify the air inside a car,allowing the passengers to have healthy and clean air to breathe.

1. Increased fuel efficiency
For older cars,studies have indicated that by replacing your dirty air filter,you can increase your fuel mileage by as much as 14 percent. Also,by changing an old clogged air filter,you allow your car the opportunity for an increase in acceleration by six to 11 percent.

2. Reduced emissions
When your air filter is clogged,the air flow to the engine is reduced which can lead to a slew of drive-ability issues. The worst issue that comes from a clogged air filter is the increase in engine deposits which is caused by having too rich of a fuel mixture. By allowing an increase of air flow to the engine,you'll see a reduction in fuel consumption and reduction in emissions.

3. Prolongs engine life
The air filter is designed to trap in dirt and debris that can damage internal engine parts. Don't be fooled by the size of debris either,even something as small as a grain of salt can result in an expensive trip to the mechanic.

4. Inexpensive and quick fix
Having to get your air filter changed is one of the least expensive things you can have done to your car. The part itself costs next to nothing in comparison to other car parts and you can replace it by yourself.

5. Easy to track
Air filters are meant to be changed every 12,000 to 15,000 miles,but if you drive in dustier areas,you should consider changing it sooner. It's common that dirty air filters may appear clean but should still be replaced at the appropriate time.

Learning how to tell if your car air filter needs changing will help you keep your car running properly and ultimately save money on gas and repairs. Changing an air filter is relatively easy and inexpensive. Make certain to use the correct air filter replacement for your make and model of car.

1. Use proper protective gear Loosen wing nut or other fasteners to remove filter cover.

2. Remove old air filter Clean filter cover and housing using a shop vacuum.

3. Install new air filter,Be sure it is sealed around the perimeter Replace cover and fasten.