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Coolio
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發表於 2008-9-5 12:49 PM 資料個人空間短訊加為好友

How to Improve Gas Mileage

Whether you are shopping for a new car or just trying to maintain the one you have, you can take
some steps to get the best mileage out of your gas purchases. The Federal Trade Commission (FTC),
the nation’s consumer protection agency, offers these tips to use fuel efficiently:

On the Road: Drive More Efficiently

Stay within posted speed limits. Gas mileage decreases rapidly at speeds above 60 miles per hour.

Stop aggressive driving. You can improve your gas mileage up to five percent around town if you
avoid “jackrabbit” starts and stops by anticipating traffic conditions and driving gently.

Avoid unnecessary idling. It wastes fuel, costs you money, and pollutes the air. Turn off the engine
if you anticipate a wait.

Combine errands. Several short trips taken from a cold start can use twice as much fuel as one trip
covering the same distance when the engine is warm.

Use overdrive gears and cruise control when appropriate. They improve the fuel economy of your
car when you’re driving on a highway.

Remove excess weight from the trunk. An extra 100 pounds in the trunk can reduce a typical car’s
fuel economy by up to two percent.

Avoid packing items on top of your car. A loaded roof rack or carrier creates wind resistance and
can decrease fuel economy by five percent.

At the Garage: Maintain Your Car

Keep your engine tuned. Tuning your engine according to your owner’s manual can increase gas
mileage by an average of four percent. Increases vary depending on a car’s condition.

Keep your tires properly inflated and aligned. It can increase gas mileage up to three percent.

Change your oil. According to the U.S. Department of Energy (DOE) and Environmental Protection
Agency (EPA), you can improve your gas mileage by using the manufacturer’s recommended grade
of motor oil. Motor oil that says “Energy Conserving” on the performance symbol of the American
Petroleum Institute contains friction-reducing additives that can improve fuel economy.

Check and replace air filters regularly. Replacing clogged filters can increase gas mileage up to ten
percent.

At the Pump: Use the Octane Level You Need

Your owner’s manual recommends the most effective octane level for your car. For most cars,
the recommended gasoline is regular octane. In most cases, using a higher octane gas than the man-
ufacturer recommends offers no benefit. Unless your engine is knocking, buying higher octane
gasoline is a waste of money.

In Advertising: Check Out Claims About “Gas-Saving” Gadgets

Be skeptical of claims for devices that will “boost your mileage by an extra 6 miles per gallon,”
“improve your fuel economy up to 26 percent,” or the like. EPA has tested over 100 supposed gas-
saving devices — including mixture “enhancers” and fuel line magnets — and found that very few
provide any fuel economy benefits. The devices that work provide only marginal improvements.
Some “gas-saving” devices may damage a car’s engine or increase exhaust emissions. For more
information and a full list of tested products, check [url]www.epa.gov/otaq/consumer.htm.

In the Showroom: Consider the Alternatives

Alternative Fuel Vehicles (AFVs) operate on alternative fuels, such as methanol, ethanol,
compressed natural gas, liquefied petroleum gas, electricity, and others designated by the DOE.
Using these alternative fuels in vehicles may reduce harmful pollutants and exhaust emissions. FTC
Rules require labels on all new AFVs to give the vehicle’s estimated cruising range and general
descriptive information. Find out how many miles a new AFV travels on a tank or supply of fuel
because, gallon for gallon, some don’t travel as far as gasoline-powered vehicles.

Hybrid Electric Vehicles offer another option for car buyers. According to DOE and EPA, these
vehicles combine the benefits of gasoline engines and electric motors and can be configured to
achieve different objectives, such as improved fuel economy and increased power.

http://www.ftc.gov/bcp/edu/pubs/consumer/alerts/alt064.shtm

最後編輯: Coolio : 2008-9-5 01:41 PM

Don't follow the crowd: that's the easiest way to get lost.

What does not kill me makes me stronger.

joseph
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發表於 2008-9-5 11:08 PM 資料個人空間短訊加為好友

Is work on old car!

Coolio :
i believe this guideline applies to older cars as well, joseph.

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	一群熱心會員對本主題作出以下的回覆: Coolio: RMK added for joseph - PID 186315 [ view ] 最後回覆日期: 2008-9-5 11:28 PM

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