Fuel Economy Tune Up

Improve fuel economy, gas mileage and engine performance!

Forum : Gas Mileage Tip - Check & Replace Air Filters Regularly

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Gas Mileage Tip - Check & Replace Air Filters Regularly
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11:05 pm
February 8, 2009


admin

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Replacing a clogged air filter can improve your car’s gas mileage by as much as 10 percent. Your car’s air filter keeps impurities from damaging the inside of your engine. Not only will replacing a dirty air filter save gas, it will protect your engine.

Fuel Economy Benefit: up to 10%

Equivalent Gasoline Savings: up to $0.29/gallon

Note: Cost savings are based on an assumed fuel price of $2.91/gallon.

Estimates for fuel savings from vehicle maintenance, keeping tires properly inflated, and using the recommended grade of motor oil are based on studies and literature reviews performed by Energy and Environmental Analysis, Inc., Washington, …


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6:57 am
April 27, 2009


Billy Webb

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NEW INFORMATION:
Replacing a Clogged Air Filter on Modern Cars Improves Performance but Not MPG

A new study shows that replacing a clogged air filter on cars with fuel-injected, computer-controlled gasoline engines does not improve fuel economy but it can improve acceleration time by around 6 to 11 percent. This kind of engine is prevalent on most gasoline cars manufactured from the early 1980s onward.

Tests suggest that replacing a clogged air filter on an older car with a carbureted engine may improve fuel economy 2 to 6 percent under normal replacement conditions or up to 14 percent if the filter is so clogged that it significantly affects drivability.

The effect of a clogged air filter on diesel vehicles will be tested in the near future.
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Note: Cost savings are based on an assumed fuel price of $2.05/gallon.

3:56 pm
June 24, 2009


Billy Webb

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