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The engine air filter in your 1999 Mercury Grand Marquis cleans the air that enters your engine. Checking and replacing the air cleaner in your 1999 Grand Marquis at least once a year will help you get better gas mileage. A dirty air filter will cause your Grand Marquis to lose 1 - 3 mpg; depending on your driving, you can improve your fuel economy and save 70 - 100 gallons of gas per year simply by changing your filter regularly. The video above, shows you where the engine air filter is located in your Grand Marquis and how to check it!
In addition to improving the fuel economy of your Grand Marquis, replacing your air filter will improve the performance of your engine. These filters are fairly inexpensive, so check out our parts page for great deals and coupons on a new one (tip: buy several air filters for your 1999 Grand Marquis so you can easily replace it with a new one if it is dirty.)
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