Your vehicle uses about 12,000 gallons of air for every gallon of fuel you burn. That's about 100 gallons of air every block. All that air needs to be filtered to keep your engine clean and your fuel economy good. If you replace your dirty engine air filter it might just pay for itself with fuel savings before your next oil change. At 1 STOP Tire & Auto Service in Castle Rock we install quality NAPA replacement parts. Give us a call at 303.688.0366 and let us help keep you safely and economically on the road.