Hi there, after having some work carried out on my Defender TD5, the owner of BAS (Bell Auto Services) told me to steer clear of putting it in my TD5. One of his customers was in the previous week having a full set of injectors replaced in his. Just my 2p, mind you, I dont even put in Supermarket fuel. Shell Diesel extra all the way.
Isn't bio diesel really aimed towards previous models such as a 200 tdi that aren't as modern. My audi A4 avant says "Nicht fur biodiesel" too. Both relatively modern engines.
Some views I found on the subject:
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Hope this helps.