Everyone is concerned about the cost of gas and are looking for was to save money at the pump.  One way that people are considering are fuel saving devices that will get them better gas milage.  Some of these devices are classified in two areas.  One being fuel heaters and the other fuel coolers.

Fuel heaters do just that.  They heat up the fuel and in theory the heated fuel is increases the performance of combustion.  Therefore, giving you a better performing engine. Fuel Coolers works on the idea of condensing the fuel.  Condensed fuel is supposed to also increase the amount of energy that is produced from the gasoline.  So these two devices are actually performance enhancers.