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AAA Gasoline Study Shows Engine Benefits of 'Top Tier' Brands

Image: AAA Gasoline Study Shows Engine Benefits of 'Top Tier' Brands
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By    |   Friday, 08 Jul 2016 10:09 AM

A gasoline study conducted by AAA found that not all gas is created equal, and some is better for your car's engine.

Top tier gasoline, which includes more engine-cleaning additives and costs about 3 cents more per gallon, leaves about 19 times fewer engine deposits after 4,000 miles of driving, The Associated Press reported.

This little-known fact seems to have escaped most drivers, three-fourths of whom choose their gas based on price or location while only one in eight choose based on added detergents. All gasoline has some detergents, according to federal rules adopted in 1996, but some top-tier brands have more.

The EPA's minimum detergent requirements have led most marketers to reduce the level of additives in their gasoline, which can affect emissions and engine performance, according to the Center for Quality Assurance.

That group offers a website that lists brands that qualify as marketers of top tier detergent gasoline, including such retail brands as BP, Chevron, Cennex, Conoco, Exxon, Phillips 66, Shell, and Sinclair, among many others.

Top tier gasoline was established in 2004 with support from automakers Audi, BMW, Fiat Chrysler Automobiles, General Motors, Honda, Mercedes-Benz, Toyota, and Volkswagen to protect increasingly sophisticated vehicle engines, according to Consumer Reports.

The move aims to prevent the ill-effects of carbon buildup in engines, which can result in "rough idle, acceleration hesitation, knocking/pinging, and reduced fuel economy" over time, the magazine said.

The AAA study examined six different fuels operating engines continuously for 100 hours to represent 4,000 miles of use. At the end of that time, the engines were disassembled and photographed and components were weighed and measured to determine carbon deposits.

"Given the technological trend toward more sophisticated engines, we think the EPA should consider raising the minimum detergent standards to ensure all drivers benefit from the type of performance and longevity promised by Top Tier fuels," Consumer Reports concluded.

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A gasoline study conducted by AAA found that not all gas is created equal, and some is better for your car's engine.
aaa, gasoline, study, top tier
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2016-09-08
Friday, 08 Jul 2016 10:09 AM
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