Mercedes-Benz Biodiesel Use Information PDF

Mercedes-Benz apparently changed their official position of prohibiting the use of any concentration of biodiesel fuel in their vehicles equipped with Common Rail Injection (CDI) and BlueTEC diesel engines (some years of M-B vehicle bear a warning sticker near the fuel filler) to allow a maximum of 5% biodiesel (B5).

Here is Mercedes-Benz' Biodiesel Information for Passenger Cars brochure PDF file, published June 2010. The document contains M-B's rationale for prohibiting biodiesel use and provides examples of the vehicle damage caused by biodiesel use.

In recent comments in the View-Navion Tech forum (owners of motorhomes primarily powered by Mercedes-Benz diesel engines), users reported an increasing number of diesel outlets - especially truck stops - which sell diesel fuels with biodiesel concentrations up to 20%. These fuels violate warranty restrictions of many non-commercial vehicle manufacturers.