Fuel
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Originally Posted by heli_ca' date='Feb 1 2005, 09:31 AM
I have been running 91 octane, but now I see that 94 octane is available at Husky(Canada).? Anyone try 94 and notice any difference?
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I use it all the time.
Some ppl think it is better, some don't believe in it. I just don't care about the couple cents and fuel up with 100 octane all the time, since it doesn't harm the engine. But I can't tell if there is a difference, since I've never tried anything else on the E60.
If you search you'll find a couple topics about this.
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Originally Posted by 530iii' date='Feb 1 2005, 03:46 PM
Sunoco Ultra 94. 
? Where can i get 100+ octane in the NYC area at the Racetrack (Englishtown maybe)? 
? Where can i get 100+ octane in the NYC area at the Racetrack (Englishtown maybe)? [snapback]85709[/snapback]
Even the gas companies concede there is no benefit to higher than suggested octane.
This is from the Mobil web site:
"Ordinarily, your vehicle will not benefit from using a higher octane than is recommended in the owner's manual. But if your engine knocks or pings at the recommended octane level, you may need a higher octane gasoline to prevent the knock."
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Originally Posted by robg' date='Feb 1 2005, 11:12 PM
Even the gas companies concede there is no benefit to higher than suggested octane.
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The Sunoco station by my house sells 104 Octane (and that is USA octane rating), or something ridiculous like that.
It costs like $4 a gallon.
Never tried it before.
It costs like $4 a gallon.
Never tried it before.
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Originally Posted by subterFUSE' date='Feb 1 2005, 11:34 PM
The Sunoco station by my house sells 104 Octane (and that is USA octane rating), or something ridiculous like that.
It costs like $4 a gallon.
Never tried it before.
It costs like $4 a gallon.
Never tried it before.
[snapback]85771[/snapback]
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Originally Posted by subterFUSE' date='Feb 1 2005, 05:34 PM
The Sunoco station by my house sells 104 Octane (and that is USA octane rating), or something ridiculous like that.
It costs like $4 a gallon.
Never tried it before.
It costs like $4 a gallon.
Never tried it before.
[snapback]85771[/snapback]
It is for high compression engines - much higher than the E60- and will not benefit us.
Here isa good, simple explanation: http://auto.howstuffworks.com/question90.htm
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Originally Posted by subterFUSE' date='Feb 1 2005, 03:41 PM
Except California (and maybe elsewhere that uses the same CFG standard?) which has 91 instead of 93. We use to have 92 but the common carrier pipeline and a dispute over royalty payments for the technology to make that one point boost ended that. We do have 100 racing fuel (unleaded) but it's over $5/gal.
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Iceman is correct -- there is no benefit to buying the higher octane rated gas for the e60 in the US as BMW tunes the engines for the "lowest common denominator"/minimum octane rating available across the entire US (which I believe is 91).
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Originally Posted by gdavis' date='Feb 1 2005, 06:34 AM
It might be worth including which system of octane ratings are being used in each of your county as you post, since some countries use different rating systems which results in slightly higher or lower numbers for the same level fuel. You might want to check on the pump and see if it is RON method or the other one, which can help us compare them.
I know the system in Europe uses a different one than in the US, and I don't know which is used in Canada or Singapore....
The one I fill up with here in the US is 93 since 91 is marked as the minimum required on the car, and we don't have 91 in our area.
(I need to look at the pump also next time I fill up)
I know the system in Europe uses a different one than in the US, and I don't know which is used in Canada or Singapore....
The one I fill up with here in the US is 93 since 91 is marked as the minimum required on the car, and we don't have 91 in our area.
(I need to look at the pump also next time I fill up)
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Here is a link to one explaination. http://www.btinternet.com/~madmole/R...RONMONPON.html
It is essential to point out that in this discussion the "PON" referenced in the article as being on the USA Pumps is now the more familiar "(R+M)/2" formula. As you can see from this, most European 98 octane discussions equate to a USA octane rating of 94, European 95 - USA 91 and so on. The gasoline companys also vary their formulas a little based on geographic and weather considerations.
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The Sunoco station I get gas from has 91 and 93 Octane. I always get the 93 but have always wondered whether I should just get the 91. Should I just fill up using 91?
