Diesel will be blended with isobutanol, and not ethanol, Union Minister for Road, Transport and Highways, Nitin Gadkari said on Thursday.Blending diesel with ethanon has been "unsuccessful", Gadkari said at an event of the India Sugar & Bio-Energy Conference. "We will use Isobutanol to blend with diesel," he added.(This is a developing story). Read more on Business by NDTV Profit.