Quote:
Originally Posted by BMWCCA1
So how do you convert octane recommendations on your gas flap to the formula for octane ratings on the pump? Aren't they totally different systems of measurement/equations?
So is AKI (Anti-Knock Index) on your flap the same as the RON+MON/2 on the pump?
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Yes. The US octane rating, called AKI, you see at the pump is (RON+MON)/2. If you look closely at the button you press, you should see something about "minimum octane rating (R+M)/2 method".
