Picture courtesy of John DeereJohn Deere has approved the use of B30 biodiesel use across its entire portfolio of Tier 4 engines. "At John Deere, we're committed to supporting and growing the use of renewable fuels in our equipment," said Pierre Guyot, senior vice-president of John Deere Power Systems. John Deere has a long history of supporting renewable fuel use in its equipment. Prior to the announcement, all Tier 4 John Deere engines were approved for B20 biodiesel and RD100 renewable diesel, with all Tier 3/Stage III A and lower tier engines approved for biodiesel blends up to B100. Customers interested in incorporating higher renewable fuel blends including B30 into their operations are encouraged to consult their fuel supplier.