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      12-22-2012, 12:58 PM   #1
whiteM5
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Race gas for performance

I've been runnning 100 octane in exotic cars for a while, but was wondering if anybody is using it in their f10 m5.

if so how high are you going? my local dealer has sunoco 109, wondering if i can get away with that in the m5 as well? anybody run 100? or higher?

how'd it go?
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      12-22-2012, 11:00 PM   #2
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I have tried mixing 100 to 91 and get around 94. In my other cars ( Porsches and Ferraris) I noticed the difference. Surprisingly, on this car, I don't notice the difference when I switched it back to just 91. Even compared to when the car was running 98 in Europe, the 91 here feels the same. I am very surprised.
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      12-22-2012, 11:21 PM   #3
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Quote:
Originally Posted by carholic
I have tried mixing 100 to 91 and get around 94. In my other cars ( Porsches and Ferraris) I noticed the difference. Surprisingly, on this car, I don't notice the difference when I switched it back to just 91. Even compared to when the car was running 98 in Europe, the 91 here feels the same. I am very surprised.
98 in Europe and 91 here are the same thing. We have different octane scales just like a Us gallon and an Imperial gallon are different.
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      12-24-2012, 01:27 AM   #4
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I think 98 in Europe equals 93 here. However, here in California, we only get 91 unless we mix it with 100 to get 93. What I am saying is that with tanks of 91 vs tanks of 93, I could not tell a difference on this car. I wonder if this car was already tuned from the factory to use 91.
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