Although the studies are still inconclusive you might want to consider using gas mileage enhancerproducts to save you money at the gas pump. The following products have been tested by the Environmental Protection Agency (EPA):
Liquid Injection - These types of fuel saving products add liquid to the air and fuel intake system of your car instead of into the combustion chamber of your engine.
Goodman Engine System-Model 1800
Waag-Injection System
Ignition Devices - These devices are usually attached to the ignition system of your car. (Can be used as a parts replacement).
BIAP Electronic Ignition Unit
Special Formula Ignition Advance Springs
Magna Flash Ignition Control System
Baur Condenser
Fuel Line Devices - These devices are used as a cooler or a heater. The fuel is heated just before it is injected into the carburetor. When this type of a device isn’t used the fuel is generally heated by the car’s electrical system, the exhaust, or the engine coolant.
Russell Fuelmiser
FuelXpander
Jacona Fuel System; Optimizer
The above gas mileage enhancer products may or may not help you save in your gas consumption and cost but if you are seriously looking for a way to save money you may want to consider trying one or two of the products.