Caltex Australia launched Bio E-Flex, an ethanol-based fuel containing up to 85% ethanol and 15% gasoline designed for use in Holden’s VE Series II Commodore flex-fuel vehicles to be released later this year.

Caltex’s Bio E-Flex will be Holden’s recommended fuel and the new vehicles will also be able to use Bio E10 Unleaded, Vortex 95, Vortex 98, or any combination of these fuels.

Caltex will begin selling Bio E-Flex in Melbourne from September and will have Bio E-Flex available in more than 30 service stations in Melbourne, Sydney, Brisbane, Adelaide and Canberra by the end of October, increasing to 100 metropolitan and regional locations in 2011.

Bio E-Flex is suitable only for flex-fuel vehicles, such as vehicles in the Holden Commodore VE Series II range. Most new and many older cars, SUVs and light commercial vehicles can use E10 which is available at about 400 Caltex service stations in NSW, the ACT and Queensland.

Holden, Caltex, Coskata and the Victorian Government are part of a consortium investigating the possibility of establishing Australia’s first ethanol plant capable of turning materials such as household rubbish and building waste into more than 200 million liters (53 million gallons US) of ethanol a year. (Earlier post.)