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am i right in believing BP ultimate petrol has RON 97, and the shell vpower petrol 99 RON? i usually fill up with BP unleaded, but yesterday decided to go with the ultimate, left a dent in my pocket of 105.9/litre but i figured worth a try.
do you think the shell will perform better n give better mileage as its 99ron? i went with BP yesterday as shell is a distance from me.
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