Mechanics

CHRYSLER 300 GAS PROBLEM

1999 Chrysler 300 • 133,000 miles

I have changed the spark plugs and the air filter. What more can I do to increase gas mileage
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November 13, 2012.




Change all the oxygen sensors as they determine how much gas is sent into the engine. Old oxygenb sensors can make a car run rich and therefore not get as good a gas mileage.



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