A perfect example is the Toyota Prius hybrid I have driven since last July. Toyota not only allows ethanol blends to be used in this car, but they strongly encourage it. The Prius has a 5 cycle Atkinson cycle engine that can adjust cylinder pressure to what ever the fuel octane will allow to get the best efficiency without detonation out of the avalible fuel. The static compression ratio of it's engine is 13/1, perfect for best efficiency of ethanol blended fuel. The whole theme of the Prius is top fuel economy, and it has a very accurate fuel milage computer. I have run it with pure 87 octane gasoline and with 89 Octane E10. Results over 5000 miles shows that the Prius makes a consistant 4 mpg better with 89 octane E10 compared to pure 87 octane gasoline. An engine runs on cylinder pressure, not just heat. The engines ability to produce the most gas expansion with a given fuel is more important than pure BTU's, as the Prius clearly demonstrates.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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