The fact is the automotive air filter is one of the most important parts of an engine, but is also one of the most taken for granted also. These actually act like an engine’s lungs, filtering the dust and dirt from the air to keep it from affecting the performance of the engine. Imagine an athlete having an asthma attack because of too much pollution. He won’t be able to perform very well. Likewise, if your auto filter has clogged up, your engine won’t be able to function well. As a matter of fact, a clogged up air-filter can cause more emissions and can make your car sluggish. That’s why it’s important to find out more about this part of your engine to keep it and your vehicle always running smoothly. What is the connection of an automotive air filter and the engine’s fuel economy?The connection is actually very simple. The harder your engine works to draw in air through the tubes and the filter, more gas is wasted. It means that the more clogged your air-filter is, the more gas you waste.How much horsepower can I expect to increase from my use of the replacement automotive filter?The horsepower increase may range from 1 to 4, depending on the type of vehicle you have, your air system restriction, and much more other factors.How often do I need to clean the automotive air filter?The only time you need to clean your filter is when you notice that there’s a decline in your engine performance. When this happens, it just means that your filter is already too clogged up with dirt and dust and needs to be cleaned.Do filters come pre-oiled or must I be the one to oil them before I can use them?Most automotive filters like Green Automotive are already pre-oiled and ready to use. However, there are also those which don’t come pre-oiled but with a separate kit for oiling. In any case, you will know when you purchase the air filter of your choice because there’s always a label for everything and the instructions are always easy to follow.