i was gonna say the same thing about 'price conditioning' but had to go out.
its a shame that we think this way and don't stand up to the government.
i don't use supermarket fuel because i don't personally feel it does my car any good. for one it smells different, has more detergents in it and i don't think its the same quality fuel as places such as esso or shell.
in fact, those are the only 2 fuel stations i will use. petrol snob, me? yep [

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(i would use bp but find that they are always more expensive than everywhere else round my way)