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Contrary to popular belief, super unleaded petrol is unlikely to make your engine more economical. You can save a little at every fill-up by making sure you get all the fuel you’ve paid for out of the hose – lift the hose up high so the remaining fuel drains into the tank before replacing the nozzle.
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Form the Times -
http://www.timesonline.co.uk/tol/dri...cle4124781.ece
However, I have seen posts on other forums saying that it does make a difference with performance cars. The fuel types have British Standards:
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* European/ British Automotive Fuel Specifications for Diesel Fuel, BS EN 590
* European/ British Automotive Fuel Specifications for Unleaded Petrol, BS EN 228
* European/ British Automotive Fuel Specifications for LPG, BS EN 589
* British Specification for High Octane (Super) Unleaded Petrol, BS 7800
* British Specification for Leaded Petrol, BS 4040
* British Specification for Commercial Butane and Propane, BS 4250
* British Specification for Fuel Oils for Non-Marine Use, BS 2869
* British/International Specification for Petroleum Fuels for Marine Oil Engines and Boilers, BS MA 100/ISO 8217
* MOD Defence Standards for Fuels and Lubricants
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It makes sense to me that some providers will exceed these standards and others will try to exceed them as little as possible to save a few quid. This is only going to make a difference to performance cars, if what I read on the other forum was true.
Did Top Gear mention anything about performance?
Tony