How do you get better gas mileage?

DeKALB — A recent study by AAA Illinois found replacing a clogged air filter can improve gas mileage by up to 10 percent. That could result in savings of up to 15 cents per gallon, the study found. But despite such results, few drivers appear to be doing anything extra to improve mileage, Beth Mosher, AAA Chicago’s director of public affairs, said in a phone interview Wednesday. “They (consumers) talk a big game, but when asked what they are doing to conserve, they expect someone else to take care of that,” Mosher said. And there’s plenty of steps motorists can take to save money in a time of high gasoline prices. The average retail price nationwide for regular unleaded gasoline fell Monday by about 9 cents to $2.96 per gallon, making it 4.