engine warranties
Many Engine Manufacturers have stated that the use of biodiesel blends will not void engine warranties provided the engine manufacturer’s guidelines are followed. Depending on manufacturer, acceptable blend levels range from B5 to B20. Engine manufacturers specify that all biodiesel used must meet ASTM D6751 fuel quality standards.

position statements

• Diesel Fuel Injection Equipment Manufacturers - Fatty Acid Methyl Esters as a Replacement or Extender to Diesel Fuel (January 2004)
• Caterpillar - Position on the use of Biodiesel. (March 2001)
• Cummins - Fuels for Cummins Engines (April 22,2003)
• Please read important comments from Detroit Diesel
• International - Statement on Biodiesel in International Diesel Engines (February, 2000)
• John Deere - Biodiesel Fuel in John Deere Engines (September 2001)
• Volkswagen - Approval of Biofuels in Volkswagen Vehicles (2005)