Exactly 10 years ago the fuel was changed to my old Mercedes:
http://personal.inet.fi/koti/v.laiho.konsulttitsto/kuvat/pavaihto22698.JPG
With mustard seed oil I run Mercedes 50 000 miles and changed to canola oil. It took only 10 000 kilometers and the motor was broken( the reason was not canola oil but the long history of the dieselmotor - almost 1 000 000 kms )