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Old 31st January 2005, 01:20   #46
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Guys...? Surely someone knows whether this Reliance pump is 24 hour or not, and if not what its hours of operation are?
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Old 31st January 2005, 04:58   #47
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Quote:
Originally Posted by Shan2nu
But to tell you guys. 98 oct in our cars is a waste, you can get the same performance and FE even with 91 oct. High octane is directly related to compression ratio. For an engine to gain from 98 oct, it will have to have a comp ratio of more than 11:1.

So, don't get into the habit of using 98 all the time. 91 is as high as our Indian cars will go (except a few that might need 93 or 95 - like the Vectra).

Shan2nu

But then, noone has ever answered the question of whether this is 98 RON or MON.
If i were to guess, i would say RON, and hence it makes more sense for our cars than if it were MON.

R
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Old 31st January 2005, 07:40   #48
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Quote:
But then, noone has ever answered the question of whether this is 98 RON or MON.
It's 98RON. Just tanked up on it 2 days back and it clearly says RON. Will update you guys on the improvments in my car, if any soon.
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Old 31st January 2005, 08:39   #49
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guys,
whats the difference between RON and MON.???????? and how will it affect performance.


satya
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Old 31st January 2005, 09:53   #50
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Quote:
Originally Posted by speedsatya
whats the difference between RON and MON.???????? and how will it affect performance.
You'll find your answer in the second post by me in this thread. (launch of speed 97 octane)

R
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Old 31st January 2005, 11:13   #51
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is all the fuel sold here have RON values.if yes ,then wat about the ordinary unleaded petrol.does it have less than 87 MON values.


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Old 31st January 2005, 13:03   #52
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Quote:
But then, noone has ever answered the question of whether this is 98 RON or MON.
If i were to guess, i would say RON, and hence it makes more sense for our cars than if it were MON.
Hmmm, that point is worth looking up on the net. Will do some reading on that and get back to you.

Shan2nu
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Old 31st January 2005, 13:33   #53
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Well Rehaan,
most websites say that fuels have 3 octane ratings.

1. RON - Research octane number
2. MON - Motor octane number
3. PON - Pump octane number.

PON is usually (RON+MON) / 2 and that is the figure printed on some pumps. it gets very confusing since we don't know if the PON is the standard way of selling fuel or some pumps sell RON rated fuels.

RON has the highest octane rating off the 3.

For all you know, the IOC extra perium 91 octane fuel must be a mixture of 95 RON and 87 MON. 87+95 / 2 = 91.

If this is true for the 98 oct sold here, it should work on our engines. But if it's just RON, you'll need a minmum compression ratio of 10.1:1 to be able to benefit from it.

Shan2nu

Last edited by Shan2nu : 31st January 2005 at 13:37.
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Old 31st January 2005, 13:34   #54
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It would have to be 98 RON. Typically the MON value of petrol is about 10 points lower than the RON value, and there is NO WAY ON EARTH they are selling 108 RON petrol. That would be racing fuel, which we are definitely NOT being offered!
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Old 31st January 2005, 13:37   #55
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Quote:
Originally Posted by Shan2nu
For all you know, the IOC extra perium 91 octane fuel must a mixture of 95 RON and 87 MON. 87+95 / 2 = 91.

Shan2nu
That's a misleading remark to make actually, because it's not a mix at all, it's just which Octane figure they are quoting. I would say that all pumps quote RON figures, since these are the highest, and in keeping with most consumer psychology, they know that people will assume 98 is better than 88, so why quote MON values, when RON values will always be higher?
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Old 31st January 2005, 14:19   #56
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then what about 87 octane .is it 77???????
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Old 31st January 2005, 17:24   #57
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Well if you're that sure about it being 98 RON ratings, then why fill it in the first place, unless your car has a comp ratio of over 10.1:1.........

It's a waste.....

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Old 31st January 2005, 18:35   #58
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Never said I was sure, just making an educated guess, and my Mondeo's engine is at 10.8:1 compression, so it should definitely benefit from some better petrol.

Does anyone know if this petrol pump is 24 hour?
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Old 31st January 2005, 18:36   #59
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Quote:
Originally Posted by speedsatya
then what about 87 octane .is it 77???????
Well, if it's 87 RON, then it is approx. 77 MON give or take.
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Old 31st January 2005, 18:41   #60
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Quote:
Originally Posted by kbk_75
Never said I was sure, just making an educated guess, and my Mondeo's engine is at 10.8:1 compression, so it should definitely benefit from some better petrol.

Does anyone know if this petrol pump is 24 hour?


hey NC,
you are the one who is closest to this pump.so you can only answer this
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