Crosswords1 min ago
ultima petrol/super unleaded
Do these petrols acually do anything except cost 4p more a litre?
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For more on marking an answer as the "Best Answer", please visit our FAQ.The ECUs in moden cars will self adjust to make the most of whatever fuel you use, a cooking 1.6 motor will not really benifit at all from using this stuff. My Impreza is supposed to use super unleaded, but I have run it for years on the normal stuff becaus if there was any difference it was so small I couldnt detect it. MPG seemed to be the same also. Some of the guys in the impreza drivers club reckon that dyno runs prove that it produces 2-3 extra BHP over normal unleaded, not worth the extra cost IMO.
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