Quote:
Originally Posted by LotusBoy
All correct, and to summarize:
91 US is equivalent to at least 95 euro octane
93 US is equivalent to 98 euro octane
Note on page 1 of this post the significant power difference between standard fuel (91US) and race fuel (100US): 18HP which is around 5% !!
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Interesting! My Swedish 1M instruction book recommend 98 euro octane but also say it can be driven on 95 euro octane. So the recommendation is 93 US or 98 euro octane over here. Do you have the same recommendation for your US specced 1M? Just curious.