Due to frequent increase of fuel price in the world market, increasing vehicle gas mileage is one the major targets of vehicle drivers today and for the coming years. There are a number of information available on the Internet that give ways on how to enhance gas economy. Choosing a fuel-efficient car or sport utility vehicle, keeping tires well inflated, using the right octane level for the vehicle, changing the oil on a specific time and lessening excess weight are just some of the various convenient and easy ways to gain improved fuel mileage. However vehicle owners, more often than not, don't realize that there are performance products available on many auto parts centers that are planned and manufactured to boost gas economy.