Tagged: ethanol

Fuel-makers blend refined gasoline with ethanol to make it burn more cleanly.

Corn-based ethanol has been considered a much better fuel additive since MTBE was found leaking into groundwater supplies (the CBS News magazine 60 Minutes did a report that led to MTBE's downfall as an additive).

But there's been debate on how much ethanol to allow in gas. The accepted standard has been a 10% mix, which is found in most gas across the country.