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Fuel
Saving - TIP: At highway speeds, more than 50 percent
of engine power goes to overcoming aerodynamic drag. Try not to
add to the drag by carrying things on top of your vehicle. A loaded
roof rack can decrease a car's fuel efficiency by 5 percent. Even
driving with empty ski racks wastes gas. In addition, if you have
air conditioning, use it only when you really need it. Running
the air conditioner robs power from the engine and uses additional
fuel
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