Caltex axed 95RON - Is 98RON worth it then?

[haitim01]

Hi guys, my local caltex has axed 95RON fuel. Unleaded fuel now only comes in 91 and 98RON at this outlet.

My car recommends 95RON fuel minimum.

My question is, will i see any benefit increasing from 95Ron to 98RON? or should i just go to another fuel station with 95RON still 'on tap'

Cheers
Tim

[androo]

The price difference is so little I think you should just use 98? It's a 3 cent difference? Compared to 13 cents or so from 91 - 95.

IMO, I think its worth the small increase in price.

[EG52NV]

What a bloody joke! I remember when they first introduced vortex 95 they were raving on about how good it was and how it kept up with shell, mobil and bps 98RON. then a year later the retards at caltex released vortex 98 Coz their 95 just wasn't selling well against everyone else who just had 91 and 98. And now your telling me caltex is stopping their so called amazing vortex 95!

Bunch of retarded marketing hooligans if you ask me.

I personally would choose from any other major brand before caltex

[mooshie]

Hi guys, my local caltex has axed 95RON fuel. Unleaded fuel now only comes in 91 and 98RON at this outlet.

My car recommends 95RON fuel minimum.

My question is, will i see any benefit increasing from 95Ron to 98RON? or should i just go to another fuel station with 95RON still 'on tap'

Cheers
Tim


calm down tiger. he said local...

[dougie_504]

Go BP or Mobil IMO (if there's one local).

What car/engine?

[DC2-PWR]

Your car will run better with 98RON, 95RON is just the minimum requirments as what our dealer told us last time.

[dlai5552]

Lol just go to another petrol station like shell or BP, they sell e10, 95 and 98 there, simple :)

[haitim01]

Go BP or Mobil IMO (if there's one local).

What car/engine?

2007 Accord Euro. 2.4l

[aaronng]

If you can find another station to pump 95RON, then that's fine. But if your local station only sells 91 and 98 RON now, then your only choice is 98. So fill 98.

[flipfire]

ACA did a comprehensive test on different fuels and 98RON came out the winner in distance per cent.

[dougie_504]

True they did, and I think they had good control of limitations as well.

For a car that modern I would only use 98.

[gumus89]

ACA did a comprehensive test on different fuels and 98RON came out the winner in distance per cent.

Lol, you mispelt "non-scientific and most likely complete rubbish". How could you type comprehensive? :D

But seriously, it wasnt comprehensive, it was 5 cars on one trip (~180km). There are so many variables that mean that test is useless. Even the same make and model will can vary by a lot, not to mention the differences in drivers and traffic. A real test would be over thousands of kilometres on a closed track with the exact same car and exact same driver.
An even better test would not even use a car and just measure the energy that these fuels give out in a bomb-calorimeter. Because most cars cant advance timing in response to higher than recommended RON fuels, it is really only the energy per litre that will affect economy.

[flipfire]

the fk u on about lol

http://aca.ninemsn.com.au/money/8238850/aca-sunday-which-petrol

closed track, same cars, same milage, same weight, empty tanks, same volume of petrol.

[mooshie]

the fk u on about lol

http://aca.ninemsn.com.au/money/8238850/aca-sunday-which-petrol

closed track, same cars, same milage, same weight, empty tanks, same volume of petrol.

every car is different. so same type of car maybe, but very small differences. a car is not a calibrated device, plus the driver moving the wheel on a different angle, tyre pressures, wind direction... any testing like this would be thrown straight in the bin by any analyst.

Ever seen how they do the testing for fuel economy ratings on new cars? it is a very involved and in depth process where a computer pretty much runs everything

[mocchi]

lmao aca.
i always think they're full of shit. good stories though when you're bored at home.

[Banana_hammock]

98 should allow your engine to perform better than the 95. I'm sure the instruction is just a baseline

[Bludger]

98 should allow your engine to perform better than the 95. I'm sure the instruction is just a baseline
How would the 98ron allow the OP's motor to perform better than the 95ron???

a negative rep or positive rep rests on what your answer will be.

[TheSaint]

i find that all of our cars are different - my eg civic (d15b7), dc2 teg (B18c2) and libert rx2.5 genIII (EJ25 n/a) all got the best milage and average performance on caltex 95

the civic showed an improvement with 98 but only marginally - the teg and the liberty didnt really show a difference

our 2005 Corolla Accent (facelift) will run the same on just about anything ... we just put caltex 91 in it ... iv tried putting better stuff in it and it didnt make a difference at all

i have found that getting fuel from the deppo is usually cheaper and the fuel seems to run better/cleaner/longer as well

[gumus89]

the fk u on about lol

http://aca.ninemsn.com.au/money/8238850/aca-sunday-which-petrol

closed track, same cars, same milage, same weight, empty tanks, same volume of petrol.

I was talking about this story...
http://aca.ninemsn.com.au/article.aspx?id=1065738

And there is still nothing scientific about driving a car.

[curtis265]

hi guys, slightly differnt question here but i didn't see it worthy of a new thread:


Can too much octane make ur car run rich? (and result in my extremely black exhaust and rear end?

[TheSaint]

YES lol

everytime i put 98 in my car i get this - same for all my cars

[krogoth]

If you can find another station to pump 95RON, then that's fine. But if your local station only sells 91 and 98 RON now, then your only choice is 98. So fill 98.

This

/thread


ACA did a comprehensive test on different fuels and 98RON came out the winner in distance per cent.


the fk u on about lol

http://aca.ninemsn.com.au/money/8238850/aca-sunday-which-petrol

closed track, same cars, same milage, same weight, empty tanks, same volume of petrol.

dont quote ACA you idiots.............there are universities, journals, and thesis' for a ****ing reason

[EG52NV]

YES lol

everytime i put 98 in my car i get this - same for all my cars

I think the black smoke is a by product of the fuel cleaning your engine.. Dont quote me on this

[EG52NV]

How would the 98ron allow the OP's motor to perform better than the 95ron???

a negative rep or positive rep rests on what your answer will be.

Higher octane reduces pre detonation hence allowing possibility of better performance as opposed to knocking? Well that's what I read on the octane boost bottle

[TbM]

^^^ Thats true but if your already running the correct octane petrol and not experiencing any knocking then using a higher octane petrol cant reduce whats not actually happening. To take advantage of higher octane petrol your ecu needs to be able to advance the ignition timing or your car needs to be retuned to accomodate the different AFR and ignition timing. Using higher octane petrol also lets you run a higher compression ratio.

[curtis265]

I also hear that some engines are able to self adjust timing based on fuel... can it sense this :S?

[TbM]

Yeh IIRC most modern cars can advance the ignition timing slightly, i think they use the knock sensor to do it but not sure on that still a bit of an ecu noob :) They can also retard the timing if they recieve a bad batch of fuel or low octane fuel to help prevent knocking.

[gensport]

this is true, most cars for about the the last 10 years or so can tune to the fuel, using closed loop O2 sensors and knock sensors, the timing is continually being adjusted to the optimum. I have a Navara dual cab V6 (93) Monaro (2002) and civic (92) and all make more power and get better fuel economy on 98 (but i only use BP)