My Brother uses it in his 600, runs fine, but its a git to start when its cold. I tried it in my Zed, but it didn't like it at all, sounded like a tractor, wouldn't rev properly and was a ***** to start!
Edit, The 600 is a thirsty begga now
I have been running 100% biodiesel for the past 18 months on my 75 CDT and it loves it. In the winter I drop to 85%, because my biodiesel is made from partly hydrogenated used cooking oils, and solidifies if pure, at around 5C
Make sure the biodiesel you use is good quality. Well reacted, well washed, properly dried.
Many manufacturers assume it will be blended with petro diesel, so don't take the care you might expect.
The best way to be sure of the quality is to make it yourself - really!
Or if you do buy it 100%, make sure you get impartial 3rd party recommendations on the stuff before you put it in your tank. There is some rough stuff being sold out there.
If it is good quality, your car will be quite happy with it, and will run with a lot less 'clatter' than when using petro-diesel.
Impartial scientific information about biodiesel isn't readily available it seems. There's reported benefits and huge losses attributed to bio-diesel being used in modern diesel engines, neither of which appear to have much scientific proof backing up the claims.
As bought B100 is only 10p a litre cheaper than regular derv, the savings don't outwiegh the risk of damage for me at the moment. Will wait till more is known about the long term effects on engine longevity I think.