- Cars are usually "air-starved" at high speed. If you do a lot of highway driving it may be worth your while to use a homemade air ram. Purchase a length of air duct, similar to the type under the dash of your car, and attach one open end behind the front grill so air is forced into the tube. Cut an opening in the air cleaner intake and attach the other end of the air duct with sheet metal screws there (you can use duct tape to seal the connection if you wish). This will achieve better fuel mileage at highway driving speeds if your engine is "air- starved".

- A fantastic tip used by truckers everywhere is to purchase gas on Indian reserves. You can buy gas at 25

- 40% discount because there are no taxes on gas on the reserves. Most maps mark Indian reserves clearly, and many times they are just a few miles from major interstates. Plan your trip to stop and fill up on reserves and save big dollars.

- Split Fire® plugs claim to give you 4.8% better gas mileage and a smoother running engine. Although you will probably see a slight increase in gas mileage, it is not guaranteed. I don't think it will be as high as 4.8%. We didn't notice any significant difference in our test car, but feel free to try it; maybe you will find a difference.

- Converting to propane is another alternative. Although this is an expensive project, you will save approximately 30 - 50% on your present fuel cost (depending on local propane fuel prices). With this type of saving, the conversion process could easily pay for itself within a year. After that, you are saving 30 - 50% for doing absolutely nothing but using an alternative fuel. Because propane is considered a cleaner fuel, it can mean smoother acceleration and idling, reduced engine maintenance, overall improved performance and less air pollution (carbon dioxide, is partially responsible for the greenhouse effect). As you may already know, most taxi cabs are converting to propane or natural gas. Tokyo has been using this system to improve air quality for many years now.

- Consider buying a diesel engine next time you are in the market for a new car. The disadvantages are: the initial purchase price is more, it's noisier and has less horsepower. The advantages are: much greater fuel economy (usually 25 - 30%), higher resale value and maintenance is lower due to a more simple engine. The best customer for a diesel engine is one who drives more than 15,000 miles a year. If lack of power is a concern, try a turbo diesel. They have about the same horsepower as a gas engine of the same size.