Good informative video. Keep it up. The information you provide is absolutely correct (I thought I was the only nerd on this subject). Just to elaborate further. Yes, the petrol from supermarket is absolutely no difference from branded petrol station. Premium petrol is definitely better in every way (as you have experienced) except it is more expensive. Is the 15p premium worthy of the extra cost that is very much a personal choice. I remembered watching a program ages ago. They tested a Ferrari F1 car with F1 fuel and regular V-Power at Fiorano. The data shown the performance between the two is very similar. The fact that a regular petrol you can buy from a petrol station can run on a highly tuned F1 car and make similar performance is totally amazing. Well, if it's good enough for a Ferrari F1 car then it's good enough for me. Just my two cents.