The Truth about Gas Stabilzers and Ethanol Fuel

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The Truth about Gas Stabilzers and Ethanol Fuel.
Whether you are using Star Tron, Stabil 360 Marine or PRI-G gasoline stabilizers don't expect any of them to work as well as the marketing hype. All these fuel stabilizer products do work up to a point, but with today's E10 ethanol blended gasoline don't expect any miracles. Since none of these gas stabilizer products can stop phase separation of E10 gasoline except for Star Tron up to 0.5% water content in the gas, even a small amount of water from humidity or condensation will make E10 gasoline go bad, even with the use of a fuel stabilzer. One of the most important things to consider when storing E10 gasoline is to keep all moisture out and that also means any contact with air that contains humidity. The best way to do this is to make sure the gas tank or gas can is full and the fuel container is a non-vented closed system so as to prevent any exposure to air. The ethanol in the fuel will react with any humidity in the air and cause water in the fuel fast and no amount of fuel stabilizer treatment will be able to overcome the ill effects of water in the gas.
But these products do help. Just don't expect any miracles.
Making your own pure gasoline from E10 gas is not a great solution because when you remove the ethanol from E10 gas, the octane rating goes way down and then you need to add an octane booster. You pay for premium E10 gas, and when you remove the ethanol in premium E10 gas , you wind up with Regular octane pure gasoline. In addition to all the work involved in separating the ethanol from E10 gas, you loss 10% of the fuel and lower the octane. It's actually cheaper to use a quality fuel stabilzer and keep the gas in a sealed container with no contact with ambient air.

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