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post #16 of 17 (permalink) Old 7th May 2011
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Re: Branded or Supermarket?

i currently go college to study mechanics, we had a visit from a guy cant remember where he was from but he said to avoid supermarket fuels because they dont filter/refine them as well as major brands. he then showed us two pistons taken out of demo engines they have, one was run on morrisons fuel and the top was black and covered in carbon deposit, the other was from bp and was a little black but alot alot alot better than the morrisons. moral of the story, 1-either he was telling the truth and we should avoid supermarket fuels, or 2- he was lying and works for bp. i duno jus thought id share. tj
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post #17 of 17 (permalink) Old 8th May 2011
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Re: Branded or Supermarket?

Originally Posted by cb3 View Post
Buy fuel in Manchester area and it comes from Shell Stanlow refinery, buy in Scotland and it's from ex-BP Grangemouth refinery no matter whose name is on the pump
+1 with that. I know Shell and some add additives but they don't do that much to be honest, not in my experience anyway. I drive up to 700 miles a week as I live in Manchester and work from Portsmouth. I use Morrisons, Shell, BP. They all give me roughly the same MPG whether I'm on LPG or Petrol.

This gets questioned to death as does the premium fuel MPG difference. If you have a very powerful car, use premium fuels as it is designed to run on them. If you use a normal everyday car then use normal fuel.

Generally it is who you favour. If you tend to do the test to see which is better you will generally drive better and more conservatively when you fill up with your 'preferred' `company. You might not notice it but you do. And also as someone said, traffic, road conditions etc all aid in this and are never the same.
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