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      01-09-2011, 05:48 PM   #23
birgppa
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Quote:
Originally Posted by emthreeboy View Post
I luuv fueling up with 100 octane. But no can do often because usually tends to cost about $100 bucks a tank.
thats what we pay for 95 in europe :<
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      01-09-2011, 05:52 PM   #24
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here in nyc we have 93 i use sunoco.
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      01-10-2011, 03:29 AM   #25
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The max engine power output is rated using "Super" 98/99 euro RON.
If you use a lower octane fuel you will get a slightly lower power output.
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      02-21-2011, 08:18 AM   #26
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Originally Posted by DrakeKemper View Post
Aren't European RON and North American Octane different? Something like 95 is 87, 97 is 89/91, and 99 is 93?
In Europe, the fuels are: 95, 98 and 100 octane.

The higher the fuel octane number, the better performance of the car.

Pb98: Power: 420 Torque: 400
Pb100: Power: 456 Torque: 434
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      02-21-2011, 09:19 AM   #27
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Originally Posted by richpuer View Post
Wouldn't complain too much about 95. Here in Cali highest we get is 91
93 here in jersey
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      02-22-2011, 12:41 AM   #28
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Quote:
Originally Posted by richpuer View Post
Wouldn't complain too much about 95. Here in Cali highest we get is 91
Yet another forum member who does not know the difference between octane rating in North America and most of the rest of the world. In South Africa and most of Europe they use the RON number for their octane rating while in North America we use the average of the RON and MON numbers. So a RON of 95 translates to an octane rating of 91 in North America.

The MON number is usually about 8 lower than the RON number so the average of both numbers roughly comes up as to about 4 less than the RON number used in Europe and South Africa and Australia.

That is why on our pumps in North America we always see the octane rating being (r+m)/2.

Cheers.
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      02-22-2011, 02:20 AM   #29
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Quote:
Originally Posted by Prince_of_Persia View Post
So do you use Petro Canada 94 Gas? What do u think about it ?
Chevron also has 94.

I exclusively use Shell V-Power 91. Especially after my dealer blamed my Chevron 94 diet for various N54 problems in my E60. In the end, it was yet another HPFP story, but the stealer indicated that BMW Canada has pointed negatively at Chevron 94 in many different engine-related issues (both N54 and S65).
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      02-22-2011, 02:29 AM   #30
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Quote:
Originally Posted by Prince_of_Persia View Post
In Canada the highest we has is 91! I usually use Shell
I go to chevron only, there's 94
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      02-22-2011, 05:35 AM   #31
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Pretty much every servo has 98 octane fuel here. At one point we had a few shell servos selling 100 octane.

i think our choices are between 91,95 and 98
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      02-22-2011, 10:26 AM   #32
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Quote:
Originally Posted by EddieGTRS View Post
In Europe, the fuels are: 95, 98 and 100 octane.

The higher the fuel octane number, the better performance of the car.

Pb98: Power: 420 Torque: 400
Pb100: Power: 456 Torque: 434
Any proof or documentation? Cant be that much of a difference!!!
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      02-22-2011, 10:35 AM   #33
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Quote:
Originally Posted by emthreeboy View Post
I luuv fueling up with 100 octane. But no can do often because usually tends to cost about $100 bucks a tank.
Yeah...there's 1 station I've found here in Oklahoma City, a Shell station, that has 93 (91 seems to be the Oklahoma standard)...and they charge $1 more a gallon than 89 on their pumps.
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Last edited by Nelrock; 02-22-2011 at 10:42 AM.
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      02-22-2011, 11:09 AM   #34
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Besiktas, I did dyno test (not this bad). If you want more info, read this thread:

http://www.m3post.com/forums/showthread.php?t=280965
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      02-22-2011, 04:00 PM   #35
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hmmmm. I always thought 76 gas was the best. And Shell was the worst (I just remember "shell hell").

For California, I found this link in the forums a few years ago. Not sure how accurate it is, but I was able to track down a local race fuel (or boosted standard stuff) using it. It takes maybe a quarter tank for your engine to reset and properly use the fuel, but once it synchs up, it's really makes a big difference! Car feels "angry."

http://www.davebarton.com/Unleaded_R...ral_and_NorCal
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Last edited by M&AGuy; 02-22-2011 at 04:01 PM. Reason: oops, forgot to include link
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      02-22-2011, 06:52 PM   #36
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Quote:
Originally Posted by pmeloche View Post
Yet another forum member who does not know the difference between octane rating in North America and most of the rest of the world. In South Africa and most of Europe they use the RON number for their octane rating while in North America we use the average of the RON and MON numbers. So a RON of 95 translates to an octane rating of 91 in North America.

The MON number is usually about 8 lower than the RON number so the average of both numbers roughly comes up as to about 4 less than the RON number used in Europe and South Africa and Australia.

That is why on our pumps in North America we always see the octane rating being (r+m)/2.

Cheers.
^^^^^^^^^^^^^^^^^^^^^^^^^most important post in the thread our 91 is roughly europe 95, and at higher alt you need less octane
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