1. Turning off the air conditioning and rolling-down the windows saves gas. NOT, according to a Consumer Reports test. That institute found no more than a one mile per gallon difference at Interstate speeds. However, if you’re driving around town on errands, you might save some gas by rolling down the windows instead of using the air conditioning.

2. Waiting after the weekend rush, towards mid-week, will save you on the per gallon cost of fuel. The American Automobile Association found that gas prices fluctuate from day to day and are determined by gas station owners looking at a variety of factors which include wholesale gasoline prices, not daily demand of their product.

3. Letting your car sit at idle, instead of turning-off the engine, will save fuel. With modern fuel injection systems on the newer cars and light-duty trucks, if you are going to be sitting for more than a half minute, you will save more gas by turning the engine off than letting it continue to run.

4. Over-inflating tires will reduce the rolling resistance and save fuel. Maybe, but the extra center tread wear, requiring more frequent purchase of expensive tires will surely offset the fuel savings.

5. Buying several five gallon lawn-mower containers of fuel at cheap prices and storing them in the trunk will allow you to lower the average of your fuel cost per gallon. Simply dangerous!

6. A higher octane grade of gas is better for your car, resulting in a more efficient operation. It’s a myth that higher-octane fuel burns hotter and cleaner. Furthermore, it will not improve an ordinary car’s gas mileage. Your driver’s manual will list the recommended level of octane, which will usually be the lowest usable for your vehicle.

The biggest fuel saver is driving the speed limit and driving sensibly. Rapid starts and stops and exceeding the speed limit will have a disastrous effect on fuel mileage. Just by driving the posted speed limit, the Department of Energy estimates that drivers can save anywhere between 15 and 98 cents a gallon with further savings available if one will drive “like an egg is between shoe leather and accelerator”.

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