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How important is your Air Filter?

Image result for dirty engine air filter



If your vehicle gets 36 mpg, you’ll burn one gallon of fuel on the average daily drive of an American, along with some 9,000 gallons of air, enough to fill a 12 x 20-foot pool to five feet. That air isn’t just air, however. There’s dust, pollen, insects, sand, dirt and even bits of rubber. The engine air filter keeps this stuff from damaging the engine, and a dirty air filter is a sign it’s actually doing its job.

How Much Dirt Is Too Much?

With regular scheduled maintenance, most manufacturers recommend changing the engine air filter every 10,000 to 20,000 miles, mostly as a preventative step. Really, the idea is to change a dirty air filter before it’s too far gone. On carbureted engines, a dirty air filter can impact performance and fuel economy, foul spark plugs and eventually cause misfires. On fuel-injected engines, it can impact performance, but efficiency is usually unaffected.

Either way, a degraded air filter may allow unfiltered air into the engine.