What fuel do you use?

[chicken8]

just wondering what octane fuel you guys use in your S2000 for daily driving. and also what are ur thoughts on these fuels

[euroasia]

Well I've only had to fill once so far, but i used Optimax, and the engine ran quite smoothly (or so i think i anyway). (i think it was actually Ultimate, not optimax, but premium grade stuff anyway)

[ludecrs]

I always use BP Ultimate, but sacrificing it not being available, I use the Caltex one. THey have a new one out atm. IIRC. I ended up getting an extra 60km out of the tank.

Every time i fill up its habit for me to reset the counter. An average of 420km out of mine. But with that new Caltex stuff, I ended up getting closer to 500km for the first time ever since I've owned it.

[aaronng]

I always use BP Ultimate, but sacrificing it not being available, I use the Caltex one. THey have a new one out atm. IIRC. I ended up getting an extra 60km out of the tank.

Eventhough I don't drive an S2k, I also get the same observation of a consistent 50km extra out of the tank with Caltex 98 when I alternate between that and Optimax.

[ROLLED]

use at least 95RON petrol obviously, I doubt you'll notice a difference with the d ifferent petrol types in terms of performance

[Chronos]

In my old car, i could tell the difference between Mobil Syn 8000 and Optimax. The Mobil stuff made the engine rev out heaps smoother.

[fto222]

I use mostly mobile 8000 if I can.
Or when I feel like it I'll try and use shell extreme as well
I believe majority of the primiums are 98 RON. The popular ones any way...
And Shell Ultimate is 100RON....
Used to use Optimax as it does give you a bit more power but it's too harsh... so I stick to Mobile 8000

[fto222]

Also, the voting up the top should have another one that says usually 98 but some times higher than 98.
:)

[Vuey]

just wondering what octane fuel you guys use in your S2000 for daily driving. and also what are ur thoughts on these fuels

unless your running Forced induction , you really arent gonna feel anything with different fuels .

its all in the head .
I get the same results from 95 and 98 - regardless of brand . And my car is regularly serviced .

And the Australian model S2000 is designed to run on 95 .

The 98 fuels are just a marketing ploy . Sure it has cleaning agents and shit , but end of the day , its just razzle - dazzle .

[fto222]

Well personally I think it's each to their own opinions...
Personally I think there is more to it than all in the head... Possibly but just for me I do feel the different, ofcourse normal driving probably bit hard to tell but when you go for cruises it's quite obvious at times....
But definately i do agree it's bit hard between 95 and 98 RON, unless you are going all the way to 100RON, then you'll really tell the difference.... the kms you do already reflects it....
And probably for me it's more noticeable as I have a racing ECU... :)

[chicken8]

yeah i just wanted to know what fuel everyone used for day to day driving. and if theres any real reason why some ppl wont use 95RON or anything like that

cause i'll get the s2000 tomorrow and it wont be too long till i fill up. and i personally am not leaning towards any particular grade of fuel. only know that it will be caltex as its the only servo i use

[Vuey]

And probably for me it's more noticeable as I have a racing ECU... :)

i hear what your saying , but im only addressing the original question .

That is for "daily use" . I dont think too many people have racing ECU's in their daily drivers , so i didnt take that into consideration .

But hey , there's definitely no harm in filling up with 98 .

[chicken8]

ang uses less than 95 octane

if you're here ang can you tell us how bad it is for driivng? pinging alot or what?

[WhiteAP1]

I would never use anything less than 98RON. If u want more Ks out of ure tank use 95RON.

[chicken8]

I would never use anything less than 98RON. If u want more Ks out of ure tank use 95RON.

why wont u use less than 98RON

and u mean 95RON gets more fuel per tank compared to the same tank of 98RON or are u saying in monetary terms

i.e. more kms for $60

[WhiteAP1]

95RON is denser than 98 and will burn slower,hence u should get more K's out of the tank (This is the case with my G/Fs rav 4 and my dads BMW,never tested it with my S)

I wouldnt use 95RON for the same reason i wouldnt use an inferior grade oil. Its high comp. high reving engine why wouldnt u use 98 or higher? Im not saying dont use 95, i just want the best for my car and i wouldnt compramise. I dont have the data or stats to show exactly what will happen if 95 is used. To me 98RON just makes sense.

Now i cant remember if it was "Fifth Gear" or "Top Gear" but there was a segment using different RON fuels an STI and some sort of econo Fiat. The Fiat marked a few HP higher on 98 than 95 but the STI marked about 15-20 more HP. This was done by drying out tanks before changing fuels and a dyno. Now its not exactly scientific, but its something to think about none the less.

IMO if ure looking to save a few $$$$ a the pump, garage ure S, and buy a lanos. ;)

[sinb]

I always use BP Ultimate, but sacrificing it not being available, I use the Caltex one. THey have a new one out atm. IIRC. I ended up getting an extra 60km out of the tank.

Every time i fill up its habit for me to reset the counter. An average of 420km out of mine. But with that new Caltex stuff, I ended up getting closer to 500km for the first time ever since I've owned it.


Ludecrs,
Yeah I get around 415Kms with Optimax, just filled up this morning with Caltex Vortex so lets see if I can prove your theory dude.
Will keep all posted.
Cheers
PS: Has anyone ever used the 100 RON from shell? I forget what its called but it has a mix of ethanol in it.

[chicken8]

i've been a fan of caltex for many years

its the only fuel i use. vortex 98 is still quite rare tho. not every caltex sells it

mostly just normal vortex which is only 95RON

[euroasia]

i've got the same habit of resetting the counter every time i fill, i'm trying to keep upto record approximately how much k's i'm getting out of a tank

[ludecrs]

Ludecrs,
Yeah I get around 415Kms with Optimax, just filled up this morning with Caltex Vortex so lets see if I can prove your theory dude.
Will keep all posted.
Cheers
PS: Has anyone ever used the 100 RON from shell? I forget what its called but it has a mix of ethanol in it.


On Tuesday I filled up at my usual BP, filled up with Ultimate 98, and went out to Warwick for the day and drove back that afternoon.

Slightest bit over a 1/4 of a tank was used going out there [180kms] and the return trip was 220km, which used probably a bit under a 1/3 of a tank.

Anyway, I yielded 400kms and still had 4 bars left....

On the way out there, I managed 75km out of the first bar, but by the time it hit 96kms, I had used 3.... ????? stupid electronic fuel guage...

[sinb]

On Tuesday I filled up at my usual BP, filled up with Ultimate 98, and went out to Warwick for the day and drove back that afternoon.

Slightest bit over a 1/4 of a tank was used going out there [180kms] and the return trip was 220km, which used probably a bit under a 1/3 of a tank.

Anyway, I yielded 400kms and still had 4 bars left....

On the way out there, I managed 75km out of the first bar, but by the time it hit 96kms, I had used 3.... ????? stupid electronic fuel guage...

Yeah those digital indicators lag abit. I found that when I am with no bars and go to fill up, there is still 10 litres in the tank..! lol. Having said that I drove an Alfa GTA (3.2 V6) for the last 2 years and I am filling up every 3-4 days for a 60 litre tank and it costs 80-90 bucks..! so the S2K is way more economical. I am soooooo glad I made the change..! :thumbsup:

[aaronng]

95RON is denser than 98 and will burn slower,hence u should get more K's out of the tank (This is the case with my G/Fs rav 4 and my dads BMW,never tested it with my S)

I wouldnt use 95RON for the same reason i wouldnt use an inferior grade oil. Its high comp. high reving engine why wouldnt u use 98 or higher? Im not saying dont use 95, i just want the best for my car and i wouldnt compramise. I dont have the data or stats to show exactly what will happen if 95 is used. To me 98RON just makes sense.

Now i cant remember if it was "Fifth Gear" or "Top Gear" but there was a segment using different RON fuels an STI and some sort of econo Fiat. The Fiat marked a few HP higher on 98 than 95 but the STI marked about 15-20 more HP. This was done by drying out tanks before changing fuels and a dyno. Now its not exactly scientific, but its something to think about none the less.

IMO if ure looking to save a few $$$$ a the pump, garage ure S, and buy a lanos. ;)
Octane has nothing to do with density. And the STI got more power because the higher the octane, the less the retarding of ignition to avoid detonation with boost.

It's good to use 98 octane in a 95 octane vehicle just in case dodgy petrol stations water down the 95 octane with 91, or if you come across a bad or old batch.

[sinb]

Octane has nothing to do with density. And the STI got more power because the higher the octane, the less the retarding of ignition to avoid detonation with boost.

It's good to use 98 octane in a 95 octane vehicle just in case dodgy petrol stations water down the 95 octane with 91, or if you come across a bad or old batch.


Yeah thats what I thought. The idea of a higher octane fuel is that it burns cleaner and as a result you get more milage?

[aaronng]

Yeah thats what I thought. The idea of a higher octane fuel is that it burns cleaner and as a result you get more milage?
Higher octane fuels don't burn cleaner. Higher octane means they are more difficult to burn. The point of self-ignition is higher than lower octane fuel. High octane fuel burns slower as well, so you can advance ignition timing for a little power increase.

Higher octane fuels don't give you power. They allow your engine to run within design spec. If you use fuel that is lower than the minimum required, your car will retard timing and run richer so that pre-ignition is minimised.

The mileage difference between 98 and 95 comes from the supposedly higher energy density of 98 octane. In other countries, I've tried 98 and 95 and didn't find any mileage improvement.

[ludecrs]

I found that when I am with no bars and go to fill up, there is still 10 litres in the tank..! lol.

Welcome to the world of Honda.

My old Prelude was the same. Fuel light would coome on once you had used 75% of your fuel.

I believe the S is the same.

[WhiteAP1]

Fuel density is the weight of gasoline in relation to the weight of water. Gas floats on water so its lighter. A good fuel will maintain density. Fuel density is similar to oil viscosity. Heavier weights flow less volume through a given opening. (such as a 95 RON fuel)

Commonly expressed in kilograms per cubic meter. The greater the fuel density, the greater the mass of fuel that can be stored in a given tank and the greater the mass of fuel than can be pumped for a given pump. Fuel density generally increases with increasing molecular weight of the fuel molecules. (Less in 98 RON)

Density ( kg / m^3 )

Ethanol - 789.0
Methanol -791.5
Gasoline - 702.5
Propane - 510.0
Ethane - 570.0
Methane -422.4
Kerosene -800.0
Hydrogen - 70.8
Methylacetylene - 700.0
Quadricyclene -985.0

Also i didnt say that Ocatane had anything to do with density i was making a comment on the fuel in general.

[destrukshn]

Fuel density is the weight of gasoline in relation to the weight of water. Gas floats on water so its lighter. A good fuel will maintain density. Fuel density is similar to oil viscosity. Heavier weights flow less volume through a given opening.

Commonly expressed in kilograms per cubic meter. The greater the fuel density, the greater the mass of fuel that can be stored in a given tank and the greater the mass of fuel than can be pumped for a given pump. Fuel density generally increases with increasing molecular weight of the fuel molecules

Density ( kg / m^3 )

Ethanol - 789.0
Methanol -791.5
Gasoline - 702.5
Propane - 510.0
Ethane - 570.0
Methane -422.4
Kerosene -800.0
Hydrogen - 70.8
Methylacetylene - 700.0
Quadricyclene -985.0
engrish?
lol.

[aaronng]

Fuel density is the weight of gasoline in relation to the weight of water. Gas floats on water so its lighter. A good fuel will maintain density. Fuel density is similar to oil viscosity. Heavier weights flow less volume through a given opening.

Commonly expressed in kilograms per cubic meter. The greater the fuel density, the greater the mass of fuel that can be stored in a given tank and the greater the mass of fuel than can be pumped for a given pump. Fuel density generally increases with increasing molecular weight of the fuel molecules

And what does that have to do with octane rating? :p
Fuel density similar to oil viscosity? LOL. The reason denser fuels flow less volume through the given opening is because IT IS more viscous!

BTW, your copy and paste has nothing to do with octane ratings. I can give you a branched-chain alkane and a linear-chained alkane, both with the same molecular weight and you'll find that the branched-chain alkane has a higher octane rating. It is not directly linked to density. Density can be an indication of octane rating, but that's it.

[WhiteAP1]

Im talking about the fuel in general, its not the ocatane that makes it dense its the additives in the fuel. Have another read, slowly this time so u can understand it. Thats right it is a cut and paste so u should send ure LOL to wikipedia. Maybe u should look up density of skulls.

[aaronng]

Im talking about the fuel in general, its not the ocatane that makes it dense its the additives in the fuel. Thats right it is a cut and paste so u should send ure LOL to wikipedia. Maybe u should look up density of skulls.
I must be dense as I still don't get what your post has to do with octane ratings and energy densities (don't confuse this with fluid density). ;)

[WhiteAP1]

not my problem

[destrukshn]

er.... okay

[dc2dc2dc2]

unleadedftw~!

[Vuey]

ahahahaha
Both you guys should apply for jobs at fuel companies (if you dont already work for one ) ! :p

you guys are waaaay too passionate about your cars .

remeber boys , pussy rules . In 5 yrs time , heck ten yrs time , will you still have an S2k or a Euro ? probably not , but you'll still be sure as hell be into pussy . ;) so my tip..... think about the long term .