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On the Road


 
1 Will using high-octane gas improve my fuel economy?
 
2 Are the fuel-efficiency ratings in the Fuel Consumption Guide database realistic and can I expect to achieve these ratings?
 
3 Are diesel engines more efficient than gasoline engines?
 
4 Does the transmission have an effect on fuel consumption?
 
5 What are the benefits of using ethanol-gasoline blends?
 
6 What are the benefits of using propane as an alternative fuel?


FAQ: On the Road: Vehicles

 

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