Quote:
Originally Posted by Fraser
My understanding is that AKI = RON minus five, or thereabouts.
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It isn't a linear conversion. Two different fuels can behave differently on the two different test protocols in the test engine, and so may have the same RON but different MON results, resulting in different AKI figures. As mentioned in post #7, 89 AKI = 95 RON for all intents and purposes, about 6 points. 91 RON is close to 87 AKI, about 4 points. 98 RON is about 91 AKI, about 7 points.
I filled up with 94 AKI at Chevron today, mainly because the idle was a little uneven after a lot of short trips in the city, and I wanted a tank with the maximum amount of Tecron in it.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
Last edited by JCL; 12-27-2009 at 02:20 AM.
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