Me too, best way to spend the time
Supermarkets tend to buy from the cheapest supplier, so you don't know what you're getting from one week to the next. Whereas Shell, BP, Esso etc is always the same.....or so I've heard.
Remember the Morrison's petrol issue from 2006 ish? It was contaminated with silicon and Morrisons ended up paying for 1000s of lambda sensors to be replaced
Yeah, ever since then.....I've steered well clear of Supermarket fuel, unless there was no other choice.