Q:
A: Hi, from Switzerland, we have occasionally - frequently used bio-Diesel and also 100% SEED OILS and it did not make a difference. VW and Skoda service people though reccomend not to use it. Not sure, if they really know. But here we don't get it along the road, as in Germany. So, we only get it when on travel ... Occasional use certainly does not harm anything or anyone, except the Petroleum companies. Ciao, H