The Corrosive Effects of Increased Ethanol in Gasoline

Most people are aware that standard gasoline formulations now contain about 10% ethanol. This is the amount that has been determined “safe” for gasoline-powered vehicles. But not as many people are aware of the increased corrosion potential of ethanol-laced gasoline.\n\nWhile ethanol itself is not corrosive, ailment   its property of attracting water is key to the problem. Together,  ethanol and water create a medium perfect for growing acetobacter in the fuel tank. This bacterium creates a by-product called acetic acid, there which causes corrosion in the fuel system.\n\nThis isn’t a major threat for people who use their vehicles on a daily basis, where the tank is getting refueled regularly. The constant use and re-filling keeps bacterial growth at bay. But for vehicles that are garage-kept for long periods of time, corrosion is a major concern as the stagnant fuel becomes a perfect breeding ground. In addition, this issue isn’t unique to cars. Any machine that uses gas – including lawn mowers and other landscaping equipment, generators, seasonal recreation vehicles, etc. – faces the same threat to the fuel pump.\n\nOne way to combat the problem is to use a gas stabilizer if you know the equipment won’t be used for a while. This is a necessity right now as we move into winter when much of our outdoor gear is getting stored away in the shed or garage. Be sure to take inventory of what you have that uses gas, and properly stabilize it before locking it up for the season.\n\nFor more information on corrosion prevention, feel free to visit our website. We’d also like to hear about your own experiences with ethanol in gasoline, and any other tips you can provide. Feel free to tweet us your stories.

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