John Deere Clarifies Position on Use of Biodiesel

Staff -- Associated Construction Publications, 1/1/2008

Due to the variety of standards that exist in the diesel engine industry and in response to questions from various markets, John Deere Power Systems (JDPS) is officially clarifying its position on the use of biodiesel in its diesel engines.

While 5 percent blends (B5) are preferred, biodiesel concentrations up to a 20 percent blend (B20) in petroleum diesel fuel can be used in John Deere engines through Tier 3/Stage III A models, including all non-emissions-certified engines. Biodiesel blends up to B20 can be used only if the biodiesel (100 percent biodiesel or B100) meets ASTM D6751 (U.S.), EN 14214 (EU) or equivalent specification. Biodiesel users are strongly encouraged to purchase biodiesel blends from a BQ-9000 Certified Marketer and to source from a BQ-9000 Accredited Producer, as certified by the National Biodiesel Board.

John Deere-approved fuel conditioners containing detergent/dispersant additives, such as John Deere Premium Biodiesel Fuel Conditioner, are recommended when using lower biodiesel blends but are required when using B20 blends.

Biodiesel is a renewable, oxygenated fuel made from agricultural resources such as soybeans or rapeseeds. It is biodegradable and free of sulfur.

John Deere, said to be the first off-highway engine manufacturer to recommend and factory-fill biodiesel in North America, wants every potential biodiesel user to be informed about the advantages as well as the cautions of using biodiesel. Good operating practices are very important when using any biodiesel blend.