The Volkswagon Groups position on biodiesel is a resounding "none at all", especially not with a pd engine like mine. That's odd because the last time I was in Germany, all the forecourts sold bio. I could smell it in the air. Germany is or was one of the biggest producers of RME.
I believe VAG changed its position on whether bio was suitable for their cars, probably when the DPF models came out - and bio can stuff those up. Well, here I am with 30,000 miles on 100% biodiesel with no problems apart from having to fork out for a new clutch and reconditioning the gearbox. But that's not the bio's fault....is it? ;-)
www.volkswagen.co.uk/assets/common/pdf/general/biodiesel.pdf
I believe VAG changed its position on whether bio was suitable for their cars, probably when the DPF models came out - and bio can stuff those up. Well, here I am with 30,000 miles on 100% biodiesel with no problems apart from having to fork out for a new clutch and reconditioning the gearbox. But that's not the bio's fault....is it? ;-)
www.volkswagen.co.uk/assets/common/pdf/general/biodiesel.pdf