Thought I'd check the above web site, to see if I was on the right track with my purchase of their Pro Kart castor/synthetic premix oil (PRO KR2) for my Villiers iron barrel scrambler. Provided you are willing to scroll through a few pages of questions which seem to be repeated regularly, there are enough references to the older bikes to make a look quite interesting. I read enough to decide that my choice of oil might help the old girl keep going, especially in our hot climate - first meeting of the year Sunday week, will be 32 degrees selsius.
Mike
Mike