s prices continue to soar.   Triple A says four states and Washington, D.C., now have $4 a gallon gas. In Idaho, the average is now $3.63 a gallon. Finding ways to cut down on the hit to our wallets is on the mind of most drivers.  But the Better Business Bureau and  mechanics are urging drivers to be on the lookout for gimmicks that promise to increase your gas mileage. With the higher gas prices there has been an increase in products claiming to give you more miles to the gallon.  But do these fuel additives and accessories really work?  Automotive experts say  it’s buyer beware. Many will agree that some do have a positive effect but very few of them actually do everything they say that they will do.  The fuel additives you pour in your tank can cost anywhere from $2 to $50.  Other bolt-on accessories you install on your car can cost upwards of $1,000.  Although mechanics agree  the products may work to a degree, saving a significant amount at the pump is unlikely.  In other words, There's no additive or special bolt-on accessory that you can use do that's going to magically double your gas mileage.  The best way to increase your fuel economy, they say,  is to keep your car maintained. “Keeping up on the spark plugs, the air filters, the oil changes and the simple maintenance that keeps the car running the way it was designed.  Properly inflated tires also increase gas mileage as well as driving habits.

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