gasoline question

[sscutchen]

Australia was looking at the possible effect of 20% EtOH blends. Here's their data for 10% ethanol versus gasoline:

3.5% drop in fuel economy
14% and 16% drop in hydrocarbon and CO tailpipe emissions (fuel injected, closed loop computer control)
30% increase in evaporative emissions
10% increase in aldehyde emissions, primarily acetaldehyde
Concerns for performance at wide-open throttle (timing advance is dialed back by the computer)
Permeability of fuel through plastic parts and corrosion of metal parts in the fuel system.

Good technical information as well if you want the science. http://eriss.erin.gov.au/atmosphere/fuel...index.html