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com/AZavg. The following products have been tested by the Environmental Protection Agency (EPA):Air Bleed Devices. This means that if you fill up your gas tank in the cooler morning temperatures, or in the colder evening hours, that youll be getting better gas price economy. In effect, what you are doing is multitasking and saving money on your fuel costs at the same time.

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Replacing a clogged air filter can improve the mileage that you get with your car by up to 10 percent. By commuting to work with others youll be cutting your monthly fuel costs by as much as half. 825 .