Quote:
Originally Posted by manicm
fpm14 - you really should be using at least 95-octane fuel or higher on your X1 - performance and economy will improve too.
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He is probably talking about 91 AKI rating, you must be talking about RON rating. Two different ways of calculating octane - AKI being the North American way & RON being the RoW/European way.
The following page is very interesting - the section I am linking to directly compares fuel ratings across countries - Petro-Canada's Ultra 94 is quite surprising compared to others:
http://en.wikipedia.org/wiki/Octane_...octane_ratings