The national average has gone up 23.6 cents since past year and is also up 11.4 cents since last month.
Drivers of vehicles that require premium gasoline should always use it. AAA urges drivers who use premium gasoline to shop around for the best price, as it could vary dramatically between gas stations in any given city. The price in ME went down 3.9 cents to an average of $2.48 a gallon.
"There's no question that higher-octane premium fuel has the potential to boost a vehicle's fuel economy and performance, however, engines have to be calibrated to require that fuel to see the full benefit", John Nielsen, AAA's Managing Director of Automotive Engineering and fix, said in a statement. AAA says drivers can expect pump prices to continue to drop heading into the holiday season as supply strengthens.
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Following on what was a comprehensive, 41-page report, AAA joined with the Automobile Club of Southern California's Automotive Research Center to investigate whether auto owners can gain anything from putting premium fuel in vehicles that recommend but don't require it.
Last year, AAA undertook an extensive study of whether motorists can gain anything from using premium gasoline.
That means fuel savings are not enough to offset the cost difference between Regular and Premium gas.
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The findings fly (drive) in the face of the common-held belief, especially held by owners of luxury vehicles, that if you put premium into your tank, it will perform at an optimal level.
In some cars, usually luxury models, Premium fuel is actually required, not just recommended.
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While engines that recommend premium deliver little bang for the extra buck, vehicles that require premium should always get the higher octane fuel. But most engines are created to run on Regular all the time.