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Originally Posted by kbk_75 For starters the way the octane number is displayed in the USA is different from how it's displayed here. In India the pumps display the RON number. In the USA the pumps display the average of the RON + MON number, which is lower than the RON number.
Secondly a lot of us own cars that DO require 98 octane (RON) to run optimally, which would be 93 octane in the USA.
Lastly, in India where fuel adulteration is so rampant, I have been informed by someone with contacts in the petroleum ministry that the "least adulterated" fuel of all the various petrol companies is Bharat Petroleum, the makers of Speed and Speed 97 fuel, so some people may be willing to pay a premium just to get less adulterated fuel.
P.S. Our only option besides 97 RON is 91 RON (86 in the USA). Run your F430 on 86 octane (if it's even available there) and you'll understand just how badly our cars run on "regular" petrol here! |
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Originally Posted by Chris C I think you are confusing manufacturer minumum specifications for fuel with recomendations.
If you spoke the manufacturers they would recomend using the highest fuel RON rating avliable this is for one reason, maintaining the power as designed of the engine.
You mention your 430 if ferrari wanted you to use 93 why would ferrari work with shell to develop a friction reducing 99 fuel blend? (at some point in the next few years this should hit India)
IF and only IF your car has a knock sensor and the ECU the ability to adjust the spark timing suffeiently will your car take advantage of better fuel. Though even if it couldnt, the better burn control of a higher rated fuel would benifit the engine by reduceing stress on the internals and you would notice this as quieter running.
Most modern cars sold today in europe, japan and america, have these features. I'm not so sure about the mahindra and tata indian derived engines. If you have a modern car you are doing your car a deservice by putting regular fuel into it. |
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Originally Posted by Chris C You are actually both correct, knocking, pre-ignition, pinking waht every you want to call it it related directly to the RON or Octane rating (again measured diffently but the same thing) if a fuel has a low rating then exactly as you say it will igntite "badly" ie without a controlled flame front across the cylinder HOWEVER it will also be more liable to ignite under pressure as the fuel is less stable.
Thus: both pre ignition (before spark) and poor burn (after spark) are both correlated to low fuel octane.
Your both correct! |
Wow...
What an interesting thread. Thanks for the gyaan people.
Please do update me!
What is the current state of Indian fuel?
What RON is standard Power/Speed/Unleaded ?
How does that compare to USA and EU "Octane Rating Standards"
I am getting the Ecosport with the Ecoboost engine. It is a fairly high compression turbo engine. Post 1000km, I will be superchipping her to 156 bhp & 250 NM.
Superchips recommends premium high octane fuel.
I have a company account unfortunately at a Power Petrol Pump - I assume that is 91 RON ? But what is that in EU / USA standards ?
Higher Octane fuel will keep my stressed and chipped engine cooler and happier I assume ?
A quote from another forum -
"I downloaded the 2014 Fiesta owner's manual from owner.ford.com and read this:
Octane Recommendations
1.0L and 1.6L EcoBoost Engines
Regular unleaded gasoline with a pump
(R+M)/2 octane rating of 87 is
recommended. Some fuel stations offer
fuels posted as regular with an octane
rating below 87, particularly in high altitude
areas. Fuels with octane levels below 87
are not recommended. Premium fuel will
provide improved performance and is
recommended for severe duty usage such
as trailer tow."
Therefore I am now looking for the best Octane Boosters in the market!
Any suggestions will be greatly appreciated!
I do rev hard and I need to keep my engine happy!
A quote from superchips "The car was 100% stock configuration, run on normal UK fuel (95RON). These cars respond better to 98RON+ premium fuel in the UK and we always advise our customers to use this."
UK Fuel 95 RON = ? Indian Fuel RON ?!?
I will be doing dyno runs before and after the remap and maybe even before and after the octane boosters.
Ideally, I would love to run the octane boosters from day 1.
My car should be delivered within the next 5 days.
Any gyaan on the ford ecoboost's engine/ecu setup etc will be highly appreciated!
Thanks a ton gentlemen!