What brand fuel do you use in your Euro?

By the way, I have heard people say that Higher Octane Fuel does not necessarily mean it has higher energy content, even though my friend in the industry says they do.

Some theory goes that increased Octane will compensates for more power if it can handle more compression ratio, which equates more power, but on an N/A I thought this is pretty constant whereas on a Turbo its variable even to temperature or manually tuned.


Also different fuels have different energy per unit, different densities, even if all are anti-knock capable of RON 98. :(


But for Euro Accords, stock car, really got to test it on Dyno to decide which fuel to use.

And again for tuned car.

Me I only have experience on tuned Turbo cars, so I should allow for discrepancies in fuel behaviour amongst NA or Turbo I think. Possible that Shell is better than Mobil or BP Ultimate is better than Shell, etc,... I am still deciding, and open minded about this yet! :)


But I wont be tuning my car anytime soon, so might try diff fuels, then see the Maximum G-Force I can pull in each gear to determine which is better ;)

1st of all someone has to pay for the war in the middle east; its not howard and bush its us,thats why we are paying high fuel prices to maintain the yanks.

Guys ive been using VORTEX for years now and every second tank i add a octane boost,ive tryed BP not bad but less MPG and SHELL for me is crap;last time i used it the motor just rattled and pinged.I have a JDM h22a IN my 96 accord and i need higher octone fuel as jap spec cars are higher compression engines and require higher octane to run properly.But the jap cars that are sent to Australia are made for our crap fuel,thats why the jap spec EURO has more HP than the Australian model.

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Originally Posted by h22accord

But the jap cars that are sent to Australia are made for our crap fuel,thats why the jap spec EURO has more HP than the Australian model.

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Does the jap spec Euro hav more HP? Do you know the figure?

Re the "crap fuel" point - that is exactly what I thought too. Reading this, however, just makes me confused - he raves about our 98 ron in Australia:

http://www.hondatech.com.au/forum/showthread.php?t=230

Just of the top of head your looking at Australian spec 140kw/223nm to Jap spec 147kw/232nm.With the fuel yes thats great 98 octane but if the australian spec engines are built to run on 91/92 octane fuel just like our holdens there australian built and made to run on 91/92 octane fuel.Japan makes cars for australia to run on 92 oct.Japans normal fuel is 98oct ours is 92oct thats why theres a difference HP.

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Originally Posted by yfin

Does the jap spec Euro hav more HP? Do you know the figure?

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I'm not sure if you can call it more HP.... Because there is an engine in the JDM line up with the exact same power figure. The 2.4L sedans have 147kW, while the 2.4 AWD wagon has 140kW. I can't say for sure if we get less power or if we got the engine from the 4WD wagon.

Lets not get confused,lets compare a apple with a apple.If you want to compare cars lets go to a integra type R 2003 model australian spec K20A 147KW/ japanese spec K20A 164KW.IF you look into the net and spec out jdm models to USA and aust models you,ll see the power difference and also write-ups on why the diff for example usa#aust 91/92 octane/jap 98/100 octane the difference in fuel.

Quote:

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Originally Posted by h22accord

Lets not get confused,lets compare a apple with a apple.If you want to compare cars lets go to a integra type R 2003 model australian spec K20A 147KW/ japanese spec K20A 164KW.IF you look into the net and spec out jdm models to USA and aust models you,ll see the power difference and also write-ups on why the diff for example usa#aust 91/92 octane/jap 98/100 octane the difference in fuel.

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The australian 2003 Type R has a K20A2 though, while the JDM is a K20A (no "2"). If the cars were exactly the same, then a drop in power could be attributed to the fuel but the Type R did not have brembo brakes. Makes me wonder if they did tone it down so that only Japan had the real Type R.

Anyone know if Japan uses RON, MON or PON? US uses PON, Australia uses RON. And the TSX is specified for 91 PON, which is the equivalent of 95 RON. So even though the Accord Euro is specified to use the same octane rating as the TSX, we still make less power. Also the TSX has a K24A2 and we have the K24A3. The difference in engine codes makes me think that they purposely put in the 140kW engine and the loss of 7kW is not from the petrol difference. I guess in the future when they do a model upgrade, they'll put in the 147kW engine and then later on put in the 2006 TSX engine (which I think is extra 5hp over 2005)

I tried Ampol Gold on a round trip of 600kms. It was fine. Seemed as good as the caltex stuff.

ampol gold and caltex vortex is the same staff,caltex bought ampol out many years ago.
k20a and k20a2 are the same engines ones JDM which has higher compresion which is made to run on higher octane fuel and the other for THE AUSTRALIAN MARKET which is made to run on our crap fuel.The number is to tell you for which market the motor is made for.Doesnt mean that if you use high octane fuel on australian spec hondas your going to get the same power gain as the jdm spec.Any way in the future if you do serious engine work on your car they,ll tell you that you,ll have to run on higher octane.

If the k20a and k20a2 have different compression ratios, that means that the pistons are different. Also, from info when Hondata released their reflash for the k20a, they specified that the k20a has a wider throttle body as well as larger diameter headers. If the k20a makes its peak torque at a different rpm to the k20a2, then I suspect that the cams are different as well.

ok guys, pplz in parra area.

A couple weeks ago i was in parra to pick up a friend of mine at the BP servo on grt western hwy in parra. when i was waiting the fuel truck truck guy came in and was Re-filling the petrol silo's. So i went to chat to him aas i waiting for my friend. i asked him how BP ultimate compared to other petrols such as optimax. He said all the servo's in parra area get there petrol from the same manufacturer, dunnoz the name. but he said he fills up petrol for other petrols station as well, such as shell, caltex, no sure about mobil though.
But my thoughts is that the servo adds other stuff to the petrol they get, but we still dun know this.