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Fuel: The Good, The Bad, and The Ugly
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Author Topic: Fuel: The Good, The Bad, and The Ugly  (Read 5237 times)
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« on: June 06, 2009, 14:20:07 »

This is an excerpt from an article I found at: (formerly found at:

Ethanol is great in automobiles... not so good for 2-cycle engines like leaf blowers, weed eaters and chainsaws.

What most people don't know is that over 50% of the gasoline sold in the US contains ethanol, and that problems can arise when gasoline with ethanol is left unused for extended periods of time.

Why? The ethanol in the gasoline attracts water from the atmosphere and the two bond together. This water/ethanol mixture separates from the gasoline - a process called "phase separation". When you start your 2-cycle engine it uses the ethanol/water that has separated from the gasoline and does not receive the lubrication that it needs. This can cause immediate engine failure.

Ethanol is also a powerful solvent and when separation occurs, it often degrades rubber fuel lines and plastic components causing unnecessary maintenance problems and reducing the lifespan of your equipment.

I continue to look for other good articles on fuel so check back often.

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« Reply #1 on: March 12, 2011, 20:09:34 »

This article has changed some since I found it.  Their current article is found at

The problem with ethanol is, ethanol is alcohol.  Alcohol does not mix with oil.  The best solution is Opti-2.  Opti-2 is compatible with Gasohol (gasoline/ethanol mixture).  To the best of my understanding, Opti-2 mixes with ethanol (as well as is possible) and I believe it does better than ANY other brand of 2 cycle oil. 
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