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Ever try jogging while wearing a Halloween mask? Of course not, it’s hard to breathe, right? When your car runs with a dirty air filter, you’re choking your engine just as sure as if you were jogging with that mask on your head. Change your air filter ever 12 months or 15K miles. When you change it, mark the date on the side with a sharpie. This will help you keep track of when it was changed last.
If you don’t change the air filter, your car can start to eventually run roughly, causing harmful, abrasive contaminants into the combustion chamber.