Hi Apologies if this topic has been discussed before, but I've had a search and cannot find a definitive answer. Basically, can I use Biodiesel in my C3? A great deal of garages are now selling it and promise that it won't require modification to my car. I have checked other sites and they state that any diesel car made between 1990-2004 will be ok to use it and the only problem may be the freezing of certain biodiesels in winter. Apparently 100% rapeseed will not freeze. I am soooooooo confused.....please help!!