The biodiesel with 40% palm oil feedstock called "B40", will combine 30% fatty acid methyl ester (FAME) and 10% of "Green Diesel" made out of palm oil with conventional diesel, Hartarto said in a television interview with CNBC Indonesia.

Indonesia currently makes biodiesel containing 30% palm oil, mixing 30% of FAME with regular diesel.

(Reporting by Bernadette Christina Munthe and Fathin Ungku; editing by Jason Neely)