WOT!!!
I was nattering to a car enthusiast neighbour and he was extolling the virtues of the oil he uses for his pride and joy that he gets from the local supermarket (Leclerc). So long story short after a bit of research I found some interesting tests on oil done by a French bike mag which showed that the "cheapo" own brand bike oil was in fact better quality, like for like, than some of the top brands and was there with Castrol and Silkolene at less than half the price. Has anyone done anything similar in the UK coz when the BOGOF offers are about the shelves clear pretty rapid!!