Many people are looking for a way to cut the cost of filling up their fuel tank. It seems as though the roller coaster gas prices are not going away soon. To combat this problem more and more people are getting their own do-it-yourself plans to make their cars and trucks run more economically. If you have what it takes to do-it-yourself these plans can pay for themselves in no time at all. Even if you are not mechanically inclined you can hire a mechanic to do the work for you. This is the best way to reduce your fuel bill and save money in the long run.