Article: Maintenance can improve gas mileage

THIS ELECTRONIC VERSION MAY DIFFER SLIGHTLY FROM PRINTED VERSION

Gas mileage can be improved by 4.1 percent by having tuneups and getting the vehicle serviced. Check the owner's manual for recommendations. Ask a mechanic to look at the oxygen sensor, the master switch in the engine's fuel control feedback loop. Repairing a faulty oxygen sensor can benefit gas mileage by as much as ...

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