All John Deere engines can use biodiesel blends. B5 blends are preferred, but concentrations up to 20 percent (B20) can be used providing the biodiesel used in the fuel blend meets the standards set by the American Society of Testing Materials (ASTM) D6751 or European Standard (EN) 14214.
John Deere engines without exhaust filters can operate on biodiesel blends below and above B20 (up to 100 percent biodiesel); however, they should be operated at levels above B20 ONLY if the biodiesel is permitted by law and meets the EN 14214 specification. Engines operating on biodiesel blends above B20 may not fully comply with or be permitted by all applicable emissions regulations. For these engines, John Deere-approved fuel conditioners containing detergent/dispersant additives are required when using biodiesel blends of B20 or higher, and recommended when using lower biodiesel blends.
John Deere engines with exhaust filters should not use biodiesel blends above B20. Concentrations above B20 may harm the engine's emissions control system. Specific risks include, but are not limited to, more frequent regeneration, soot accumulation, and increased intervals for ash removal. For these engines, John Deere-approved fuel conditioners containing detergent/dispersant additives are required when using B20, and recommended when using lower biodiesel blends.