Hello Passatfahrer, I wanted to ask if I can refuel biodiesel in the passat (TD with 1.8l capacity 75hp, build year I can not say exactly, guess once 92) without a doubt!? I want to go to Hungary on holiday and there goes already alone for the drive 1-2 tank fillings, so would be worthwhile! And still what: Do I always have to drive the tank empty before I want to refuel normal diesel, or can I also mix?????? …so if you have your experiences gemac Then please post your post! Thank you Phil}> This is what the passover looks like {<