Supermarket vs. branded petrol.. your opinion?

Originally Posted by shiftin_gear98

I used to put any old petrol in the bike can't say I every really cared if I needed fuel I'd fill up. However I now have a company Shell fuel card, so my bike now gets the good stuff Optimax all the way!
I've been using it about a year now can't really say I've noticed a whole lot of difference, except that it doesn't feel so bad driving to work when someone else is paying, especially in the summer on the extended detour.

have a read of the below, might explain it, using premium fuel in a standard engine is a waste.

http://www.petrolprices.com/about-fuel.html

[madcockney]

If you do a search of the Internet you will find even more motorcycle specific and deeper technical information on this. I recall reading that only a few road bikes can benefit from "Super Unleaded" fuels and generally those are the ones that run ultra lean which includes some of the BMW machines. Fuel like oil, etc. is a subject where everybody has their own opinion, which is not necessarily based on scientific evaluation.