91 or 95 octane

[yryr999]

Hi to every one. I have to kind if fuel 91 and 95

becouse i want the best for my car

Becouse I fill up my car with 95 and afriend of mine told me that weast for my money so I told my self why I don't ask this forum becouse they expert in this matter so I want your advice in this and yeah I tuned my car with stc for better per so I'm waiting for your answers. Becouse my tank now near to finish. And I'm want the best for my mm


Thanks all of you.


See you soon and will


Best wishe: Yasser

[-Matt-]

91 is fine.... 95 is better

[justbob]

It depends on just what your tune was adjusted for.

[-Matt-]

It depends on just what your tune was adjusted for.


I assumed he was stock

[ntd]

Higher octane has more resistance to detonation. Run what your tune is adjusted for, what are you tuned for? Running 95 on a 91 tune no problems but a waste or insurance depending how you look at it. Running 91 on a 95 tune you may be in the market for a new engine

[yryr999]

the car is stock just i tuned the car for cancel the rear o2 sensor and edit tires size and tune for get some race for asotck eather

[justbob]

I assumed he was stock
You assumed WRONG, therefor you FAIL.:D Translated:

Hi to all you awesome people and you also Matt. I have to find out if I should use 91 and 95 octane fuel, because I want the best performance for my car.

My friend told me that it is foolish for my wallet so I told myself, why don't I ask this awesome forum, and Matt, because they are sheer awesome on this matter so I am asking for your advice in this. I tuned my car with an SCT for better performance, so I will wait for your answers, because my tank is now near to empty, and I want the best for my Marauder.


You guys are awesome, thank you.


See you soon


Best wishes: Yasser

[justbob]

the car is stock just i tuned the car for cancel the rear o2 sensor and edit tires size and tune for get some race for asotck eather
Then the car would require 93 or better to run efficiently.

EDIT: If I am reading this right, then you do infact have a race tune, I would imagine 93 for sure then, check with who you bought the tuner from.

[MM03MOK]

Saudi Arabia rates their octane as RON:
Research Octane Number (RON)

The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine (http://en.wikipedia.org/wiki/Engine) with a variable compression ratio (http://en.wikipedia.org/wiki/Compression_ratio) under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.


The US rates octane as AKI:
Anti-Knock Index (AKI)

In most countries, including all of those of Australia (http://en.wikipedia.org/wiki/Australia) and Europe (http://en.wikipedia.org/wiki/Europe) the "headline" octane rating shown on the pump is the RON, but in Canada (http://en.wikipedia.org/wiki/Canada), the United States (http://en.wikipedia.org/wiki/United_States) and some other countries, like Brazil[4] (http://en.wikipedia.org/wiki/Octane_rating#cite_note-3), the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI, and often written on pumps as (R+M)/2). It may also sometimes be called the Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2.


Motor Octane Number (MON)

There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load as it is done at 900 rpm instead of the 600 rpm of the RON. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing (http://en.wikipedia.org/wiki/Ignition_system) to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally, fuel specifications require both a minimum RON and a minimum MON.

Difference between RON and AKI

Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel.


87 AKI (pump octane) fuel would have a MON of 82 and a RON of 92.

89 AKI (pump octane) fuel would have a MON of 85 and a RON of 95.

[CBT]

Whoa. Bunny make CBT's brain hurt with that one.

[MM03MOK]

I'll make it simple...

Saudi Arabia's 95 octane is like 89 octane in the US.
Saudi Arabia's 98 octane is like 93 octane in the US.

Saudi Arabia's 91 octane is too low for the Marauder. Yasser should be using 98 octane (RON).

[RR|Suki]

I'll make it simple...

Saudi Arabia's 95 octane is like 89 octane in the US.
Saudi Arabia's 98 octane is like 93 octane in the US.

Saudi Arabia's 91 octane is too low for the Marauder. Yasser should be using 98 octane (RON).

/thread win

[Dereck]

Hi

We get 102 octane (RON) here as well so I guess that is the equivalent of your 98 :)

Regards

Dereck

[MM03MOK]

Hi

We get 102 octane (RON) here as well so I guess that is the equivalent of your 98 :)

Regards

Dereck
Niiiice!!! :D

[252life]

Hi to every one. I have to kind if fuel 91 and 95

becouse i want the best for my car

Becouse I fill up my car with 95 and afriend of mine told me that weast for my money so I told my self why I don't ask this forum becouse they expert in this matter so I want your advice in this and yeah I tuned my car with stc for better per so I'm waiting for your answers. Becouse my tank now near to finish. And I'm want the best for my mm


Thanks all of you.


See you soon and will


Best wishe: Yasser


You should definitely not use 91 (RON) octane.

When you tuned your car with SCT, did you use a 91 or 93 tune from USA or was it done on a dyno in your country?
Because a 93 octane tune from USA requires 98 RON Octane gas,
and a 91 octane tune from USA requires 95 RON Octane gas



And it's easy to convert octane ratings just ad "4" to the US number and you get the RON number

95 RON = 91 US
98 RON = 94 US

[CRUZTAKER]

... ad "4" to the US number and you get the RON number



RON says "...add 10" ;)

http://jenee.net/wp-content/uploads/2008/08/ron-jeremy.jpg

[justbob]

Can Ron be considered a childhood sports figure? I think so!