[Halcyon]

I fill my car with Petrol at Tesco and some people have been saying that every so often I should fill up at a station such as Shell, BP, Texaaco, etc as the fuel is better and it is good to give your engine some better quality fuel.

How true is this?

Is the higher octane stuff such as that offered by Shell any better for the engine and prolonging my cars life?

Thanks,

halcyon.