MBUSA's position regarding BioDiesel
"Mercedes-Benz approves the use of B5 bio diesel (approved diesel fuel with a maximum 5% bio diesel content) in all CDI/BLUETEC engines. The only approved bio diesel content is one that both meets ASTM D6751 specifications and has the oxidation stability necessary to prevent deposit-/corrosion-related damages to the system (min. 6h, proven by EN 14112 method). Please see your service station for further information. If the B5 bio diesel blend does not clearly indicate that it meets the above standards, please do not use it. The Mercedes-Benz limited warranty does not cover damage caused by non-Mercedes-Benz-approved fuel standards."



