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Supply, Marketing, Distribution, Transportation & Logistics News & Information
August 2017 Issue

NACS: Demystifying the Realities of “Bad Gas”

June 16, 2017 •

Your car has trouble starting … the ride is sluggish and the engine “pings” … it suddenly stalls and the engine light comes on … it abnormally continues to sputter even after it’s turned off … and your first thought is: I must have filled up with “bad gas.”

 

So, is there such a thing as “bad gas?” And if so, how can drivers avoid it?

 

Is There Such a Thing as Bad Gas?” is part of the 2017 NACS Fuels Resource Center, which examines conditions and trends that could impact gasoline prices. The online resource helps explain the retail fueling industry by exploring, among other topics, how fuel is sold, how prices affect consumer sentiment, why prices historically increase in the spring and which new fuels are likely to gain traction in the marketplace.

 

The backgrounder examines each of the possibilities related to how fuel may be causing these problems:

  • The fuel has a high water content. Gasoline today typically has 10% ethanol content, and ethanol attracts water molecules. A few drops of water won’t necessarily hurt, but greater water content from issues related to delivery or storage—or the fueling itself—could present a potential problem. 
  • Small particles or sediment mixed with the fuel. Filters on fueling nozzles capture most larger sediment particles, but smaller particles could potentially get through and build up on the engine parts over time.
  • There was a fill-up with a lower octane level than required by the vehicle. This could be caused by accidentally or intentionally fueling up with a fuel that has a lower octane rating that required for the vehicle, or could be because the fuel in the underground storage tank (UST) is a lower octane level that stated, which would be unusual.
  • The gas has simply broken down. Gasoline is a complex mix of several different substances and over time it can break down into these various elements that include fuels and solvents to aid the combustion process.

 

“The cause of ‘bad gas’ may not be the gas station itself. In some cases, the problem may have been caused further “upstream” during delivery or refining. While it is difficult for anyone to determine if bad gas has been purchased, there are some precautions that you can take to minimize the likelihood that you experience ‘bad gas,’” said NACS Vice President of Strategic Industry Initiatives Jeff Lenard.

 

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