Persons in the ethanol industry want to raise its levels in gasoline. Persons worried and/or opposed: the EPA, auto-industry execs, and those concerned about public health. Problems with increasing the ethanol percentage:
- At present, E10 (10% ethanol) gasoline is all that virtually all cars can handle.
- Like methanol, ethanol attacks rubber fixtures simply because it's a good solvent.
- While water is effective against ethanol/methanol fires, the alcohol has a lower energy content, balancing out low pollutant emissions.