Busting some gas-saving myths

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Story Published: May 20, 2008 at 8:32 AM PST

By KVAL Web Staff

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EUGENE, Ore. - As gas prices climb toward four dollars a gallon, you're probably looking for ways to get better mileage.

But some of the advice that's supposed to stretch your dollar could end up costing you.

Car experts say some of the most common tips are probably a waste of your time.

Buying gas in the morning? People say when fuel is colder, and more dense, so you get more gas molecules.

It's a myth.

Consumer Reports says the temperature when gas comes out of the nozzle doesn't change much during the day so it won't make a difference.

Changing your air filter more frequently? It won't decrease your fuel consumption.

The experts say if it's not required, don't use premium fuel because you won't notice a change.

Turning off the air conditioner? You'll only sweat more.

The biggest myth seems to be pumping more air into your tires.

"You're gonna prematurely wear them out and the side of the tire, it'll have a recommended air pressure under a maximum load and you're gonna want to try and stay within that specific area," said Jeremy Portwood of Les Schwab Tires.

So what can you do that will actually help?

Portwood said use your cruise control, and drive the speed limit, at a steady pace.

He said stopping and starting quickly burns a lot of extra gas.

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