Octane ratings
- Thread starter ron in sc
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I'm surprised it doesn't have a US unit since it's a US export car.
The US uses the (R+M)/2. The R stands for RON, Research Octane Number and the M stands for MON, Motor Octane Number.
What kind of car is it? Engine?
The US uses the (R+M)/2. The R stands for RON, Research Octane Number and the M stands for MON, Motor Octane Number.
What kind of car is it? Engine?
They use a different octane rating system in Europe. In the US, the octane on the pump is RON + MON / 2. 93 octane is pretty much equivalent to European 98 RON.
RON 98 is about 93-94 AKI Anti Knock index in the US
95 RON would be about US 91 AKI
http://en.wikipedia.org/wiki/Octane_rating
the octane rating shown in Canada and the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel.
95 RON would be about US 91 AKI
http://en.wikipedia.org/wiki/Octane_rating
the octane rating shown in Canada and the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel.
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Originally Posted By: ron in sc
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
No detergents or their carrier fluids?
It might be possible to produce a 98 RON fuel that isn't (R+M)/2 of about 93, but not likely. This number is also known as "anti-knock index" or AKI. For the most part most commercial fuels will have a pretty reasonable correlation.
In reality they're not really looking for an exact RON or an exact AKI performance, but that they have an fuel that meets their anti-knock requirements. A representative 98 RON or 93 AKI will meet that requirement, even if it's possible to make a tailored fuel that wouldn't. Regardless of that, your engine will be fine as long as the knock sensors are working.
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
No detergents or their carrier fluids?
It might be possible to produce a 98 RON fuel that isn't (R+M)/2 of about 93, but not likely. This number is also known as "anti-knock index" or AKI. For the most part most commercial fuels will have a pretty reasonable correlation.
In reality they're not really looking for an exact RON or an exact AKI performance, but that they have an fuel that meets their anti-knock requirements. A representative 98 RON or 93 AKI will meet that requirement, even if it's possible to make a tailored fuel that wouldn't. Regardless of that, your engine will be fine as long as the knock sensors are working.
Originally Posted By: ron in sc
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
Octane rating has nothing to do with % of gasoline. In addition, I don't believe you can buy gas in the USA that is free of additives. Current regulations require all gas to have a minimum level of detergents.
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
Octane rating has nothing to do with % of gasoline. In addition, I don't believe you can buy gas in the USA that is free of additives. Current regulations require all gas to have a minimum level of detergents.
Originally Posted By: BHopkins
Originally Posted By: ron in sc
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
Octane rating has nothing to do with % of gasoline. In addition, I don't believe you can buy gas in the USA that is free of additives. Current regulations require all gas to have a minimum level of detergents.
I'm sure Ron is referring to ethanol-free gas.
Originally Posted By: ron in sc
Thanks all.
That's great because I can buy 93 octane which is 100% gasoline.
Octane rating has nothing to do with % of gasoline. In addition, I don't believe you can buy gas in the USA that is free of additives. Current regulations require all gas to have a minimum level of detergents.
I'm sure Ron is referring to ethanol-free gas.
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