NEW DELHI, Nov. 4 -- Testing is underway to assess the feasibility of blending 15% isobutanol in diesel, road transport and highways minister Nitin Gadkari said on Wednesday, adding that the petroleum ministry will decide on the next steps.

The move is part of the government's push to promote biofuels, reduce dependence on imported crude oil and check vehicular emissions.

Speaking at an event in New Delhi, Gadkari said that the government's efforts to promote biofuels were aimed at reducing India's annual fossil fuel import bill of Rs.22 trillion.

"Testing for a 15% blending of isobutanol is underway currently, and the petroleum ministry will take a call on this further," said the union road transport and highways minister.

The propos...