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What effect does Methanol/water on fuel octane number?

April 26, 2017FUEL methanol octane water

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What effect does Methanol/water on fuel octane number?

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By adding methanol to fuel the octane rating will go up. 10% methanol will increase the octane number by a factor of 5. When alcohol is diluted by mixing with water, the effect will be proportional to the concentration and flow of the water/alcohol mixture into the engine.