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Tagfuel economy

Searching for fuel economy info? Check out all the fuel economy related articles here on the NAPA Know How blog. We’ve got Know How for all!

A person opening the engine air filter box under a car's hood

How to Change an Engine Air Filter

It’s easy to tell when your windshield wipers need to be replaced because the evidence is right in front of you. Similarly, a dirty cabin air filter might release unpleasant odors or block air from flowing through the vents. An engine air filter that needs to be replaced, however, isn’t so obvious…