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?
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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?
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 98RONQuote:
Originally Posted by WhiteAP1
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
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. ;)
Quote:
Originally Posted by 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.
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
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
Quote:
Originally Posted by 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:Quote:
Originally Posted by ludecrs
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.Quote:
Originally Posted by WhiteAP1
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.
Quote:
Originally Posted by 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.Quote:
Originally Posted by sinb
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.