But it has a very common procedure that many mechanics and even some attendants that practice is ba

Making a quick summary, the air filter is responsible for keeping the air your car "breathes" clean. So he keeps the performance and fuel economy and prevents breakage preventing any impurities from entering the engine.
But it has a very common procedure that many mechanics and even some attendants that practice is bad for the air filter and worse for the health of your car: the famous cleaning with compressed cov air jet.
Perhaps you've been through it. At the time of review, the mechanic says that the filter is still good (even though the manual tell you it's time to replace it) and that "just pass air" is enough to clean it. The process is nothing more than blowing jets of compressed air filter in order to clean it. Thank you believes until the economy. But it has one important detail that mechanical friend often do not know.
The air filter is usually done in a paper with several layers absurdly small pores. These pores are capable of filtering particles down to 1 micron. The micron is one thousandth of a meter, or 1 micron equals 0.001 mm. To give you an idea of how small it is, a hair has, on average, 80 microns thick. This means that the thickness of a human hair is about 80 times larger than the pore air filter.
Now, imagine the effect of a jet of compressed air directly into the filter element air filter. Basically, he throws open all the pores of the filter, allowing the passage of much larger than those that your engine should receive impurities. To the naked eye it may appear that the filter was brand new, but in practice it was completely destroyed and is open to receive the crap that is in the atmosphere doors.
Always keep an eye, the exchange must be informed in the manual mileage. Of course if you have a washable air filter the chat is another. cov Still, drying it should not be done with compressed air jets.
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