Organizers of the famous Indy Car races, including Memorial Day’s Indianapolis 500, have shifted from pure ethanol to E85 for the 2012 season, in large part because the fuel is commercially available and thus can be embraced by racing enthusiasts for their own flex-fuel vehicles.
Indy Car — now Izod Indy — is also going for smaller engines, from more suppliers, too: GM-Chevrolet and Lotus are joining Honda to supply 2.2-liter, direct-injection turbocharged V-6 engines. Honda was the only supplier of Indy Car engines from 2006 through 2011, when the specs called for 3.5-liter V-6 engines running on E98 – denatured alcohol.
Fuel, based on Brazilian sugarcane, but this year containing unleaded gasoline, will continue to be supplied by Sunoco.
Exception to the Rule: cars competing in the Iowa Corn Indy 250 will run on corn-based ethyl alcohol.
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