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.............. Asda finest two star..................
No such thing as Asda finest when talking about their fuel. Try it on some decent juice from BP or Shell and see the difference.
I am doubtful of claims like that. It is like wine tasting, even professionals fail in blind tasting trials. Now if there is a blind study that shows supermarkets fuel is worse, fine, but if it is just best on subjective experience, I have my doubts..
Higher octane rated fuel is obviously needed for engines in a high state of tune, but for most road going engines any old petrol will do. I suspect the supermarket fuel comes from the same refineries as all other fuels. BP or Shell might put different additives in, but I think there is quite allot of woo around additives as well. Until I see a proper study showing they actually have any benefits.
Put it another way, I have never noticed any difference between any of the fuels I have used. Granted I have never owned a car with a high performance engine in a high state of tune, but for a normal road car any old fuel will do.
My main catchment area for vehicles I maintain includes two Asda superstores, one near my home, the other near my place of work. Numerous times, and usually in clusters of several cars at a time over the space of a few days, I will receive calls from owners who are experiencing odd losses of power, misfires or rough-running on their vehicles, almost exclusively petrol-fueled. I always ask first where they last refueled their vehicles and they have ALWAYS refueled at one of these two supermarkets. Once I have found this I ask them to fill-up with branded fuel and - with only one exception where a coil pack was failing - filling up with BP, Shell , Esso or Texaco has fixed the problem and additionally it is usually repaorted that the car is now 'running better than it ever has'.
