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E85 Tuning And Prep

Originally Posted by Sh0velMan ... Ethanol is much lower viscosity and specific gravity than gasoline, therefore you need more of it to get the same amount of work done. ...

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Old 12-25-2012, 02:39 PM   #5 (permalink)
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Originally Posted by Sh0velMan View Post
... Ethanol is much lower viscosity and specific gravity than gasoline, therefore you need more of it to get the same amount of work done. ...
Thanks for the info.

While it is true that hydrocarbons (LPG/gasoline) follow the "denser = more energy" rule - Ethane, Methane, Propane, Butane, Gasoline are increasingly denser and have more BTU - EtOH is not a hydrocarbon. EtOH, while having less energy content (21.2 MJ/L vs 34.8 for gaso and 38.6 for diesel), is more dense (0.79 g/cm3 vs 0.71–0.77 for gasoline).
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