Auto Air Filters: Replacement Versus Performance

It never ceases to amaze me when I hear people complaining about the high price of gasoline and then learn that they do not do the simple things to improve their gas mileage. Changing the oil/oil filter at regular intervals, keeping tires at adequate levels, and replacing the air filter can all go a long way toward improving gas mileage. Nobody likes to pay $2.65 a gallon for gas...you can