February 2008

Special Report: Clean Fuels

E85—it's a whole new ballgame

Additive programs must be designed to handle higher ethanol concentrations in renewable fuels

Corkwell, K., The Lubrizol Corp.

In the US, the rapid growth in the availability of E85 fuel (85% ethanol and 15% gasoline) to power over seven million flexible fuel vehicles (FFVs) is creating a whole new ballgame for the many industries involved in the E85-supply chain: oil companies, vehicle manufacturers (original equipment manufacturers,) additive companies, etc. But, along with challenges, solutions do exist. E85 specification. The ASTM D5798 specification covers fuel blends of 75% to 85% ethanol and 25% to 15% hydrocarbons used in automotive spark-ignited engines. The specification was first approved in the 1990s, well before the flood of FFVs hit the road. While E85 availability is still limited to about 1,300 out

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