There are two more important consideraations when using ethanol or methanol 
mixtures in gasoline. 

 One is the corossive nature of alcohol and its effect on seals, gaskets and 
hoses.  There is also mild corrosion of aluminum.   Limiting the mix ratio 
keeps it minimal. 

The other is that addition of alcohol or methanol will raise the octane rating, 
however, after reaching a certain point, adding more will drop the octane 
reading, according to the lab at the local refinery.  I did not get figures, 
but If I were using up 55 gallons, I would use it in a 10 per cent solution, 
just like the local gas station pumps.

EdB


  ----- Original Message ----- 
  From: Jack Kenworthy 
  To: biofuel@yahoogroups.com 
  Sent: Sunday, March 23, 2003 4:42 PM
  Subject: [biofuel] ethanol mixtures


  can anyone tell me the maximum amount of ethanol that you can blend with 
gasoline and burn in an unmodified gasoline engine?  I have a 55 gall drum of 
ethanol lying around that I can't make biodiesel with and I am looking for a 
suitable use.  thanks.
  jk
  Jack Kenworthy
  Sustainable Systems Director
  The Cape Eleuthera Island School
  242-359-7625 ph. 954-252-2224 fax
  www.islandschool.org


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