[ichsnoo]

Originally Posted by sheepofblue

Think of the alibi though, "I am not drinking to get drunk, I am fascinated by the reverse swirl and need to get myself to whiz"

Thanks sheepofblue, that alibi will be used to explain things to the girlfriend when I come through the front door of her parents place in Chicago rolling drunk. I can even plead that it's a some sort of scientific experiment.

Ciao,
Dave

[matt232]

Don't worry about the septics, they are just a little sensive.

In order of preference

BP (usually Ulitmate)
Mobil (usually 8000)
Caltex (usually Vortex)

I don't touch Shell Optimax (unless they pay for the neceassary engine mods), nor any independant brands.


but will throw in some 95 RON premium from the main 4 if the need arrises without any fears.


Also avoid any servos that have a tanker filling the tanks, it stirs up the fuel and has been know to cause problems with contamination with water and other junk unless given time to have it all settle to the bottom again. Just ride on.

[matt232]

Originally Posted by sheepofblue

A 1000RR in the USA using the native octane rating (different from Europe and Australia) has a recommended octane of 92 as minimum.

95 RON mimimum over here.

[matt232]

Originally Posted by CBR929RE

what do you mean by "normal unleaded"?

Regular Unleaded = 91/92 RON

Premium Unleaded = 95 RON

Ultra Premium Unleaded = 98 RON (BP Ulitmate, Shell Optimax, Mobil 8000 and Caltex Vortex 98 fall into this category)

In the last 8 months BP started selling 100 RON fuel at a few servos scattered around the place.

[matt232]

Originally Posted by anthmac

so yeh ill ditch the high octane and run with the standard mobile..

in the end it depends on the bike....some people find theirs go better with Shell Optimax, some BP Ultimate and others Regular Unleaded. A little experimentation will give you a feel for what works best both financially and power wise.

[cbr1000f]

i have a cbr 1000f 89 model it has a lot of work done on the motor and i have found BP ultimate to be the best for my bike i used to work in the petrol industry and the general concensus is that optimax is great for vehicles with fuel injection and the ultimate is better for carbies. i get nowhere near as many kilometers on regular unleaded as i do on ultimate and my bike has a lot more punch off the line with the 98 octane bp ultimate

Originally Posted by anthmac

thanks for the link

'...a "high-performance engine" has a higher compression ratio and requires higher-octane fuel'

bikes are high compression and therefore require high octane fuel yeh...

so back to my original question.. what petrol does everyone in australia use and why?

[anthmac]

Originally Posted by matt232

in the end it depends on the bike....some people find theirs go better with Shell Optimax, some BP Ultimate and others Regular Unleaded. A little experimentation will give you a feel for what works best both financially and power wise.

yeh fair enough but i originally wanted to know which was best for the bike. cause i was the same as you just using mobil 8000 and bp ultimate. but now everyone seems to say regular unleaded is the way. 91 ron. or is premium unleaded and not high octane or high ron. anyways im just gonna try everything until i speak to someone who knows conclusively which is the best for my bike.

[CBR929RE]

Originally Posted by ND4SPD

You could have saved yourself a lot of aggravation. petrol..

Originally Posted by anthmac

anyways im just gonna try everything until i speak to someone who knows conclusively which is the best for my bike.

I guess HONDA doesn't know what they were talking about when they wrote the owners manual.

[abtech]

Originally Posted by anthmac

yeh fair enough but i originally wanted to know which was best for the bike. cause i was the same as you just using mobil 8000 and bp ultimate. but now everyone seems to say regular unleaded is the way. 91 ron. or is premium unleaded and not high octane or high ron. anyways im just gonna try everything until i speak to someone who knows conclusively which is the best for my bike.

OK, all of your comments so far are based on a "seat of the pants" impression, rather than empirical data. I would wager that if you ran 5 different top tier fuels (after a full fuel system flush between changes) that your 1/4 mile performance would vary less than .01 seconds (all else being equal) and that you would find similar extremely small differences in roll-on and top speed testing (all well within a 1% margin of error).

I have found in every case that subjective test results are 100% false and that most riders can't accurately tell a difference of 5% or less in horsepower in a blindfold test. I would also wager that the same 5 different fuels on a dyno would have less than 2 HP difference (1.6%) throughout the power band. Although most people would grade that 2 HP as the one they would use after viewing the results, the real world difference is negligible.

Like oil preference, I have found that most people end up using the brand and formula they THINK is best even after being shown it is the worst of all the available options.

So go with the gas you think is best and keep smiling . . .

[seamus]

Originally Posted by abtech

I have found in every case that subjective test results are 100% false and that most riders can't accurately tell a difference of 5% or less in horsepower in a blindfold test.

That sounds dangerous.

[abtech]

Originally Posted by seamus

That sounds dangerous.

well if they keep the blindfold on after they switch bikes, yeah it would be a bit dangerous (but pretty funny) . . .

[Zeeman]

Originally Posted by anthmac

because i want to know what people in australia run and why... as i keep asking but dont get an answer to. thanks for your input though.

I use BP, Mobil or Caltex 98 (in that order) premium if the others are not available, and regular unleaded if I'm out of fuel and REALLY need to fill up, and there is nothing else.

think im going to have to go elsewhere other then a message board where everyone knows everything and has an opinion on everything. even if they dont justify there answers..

Welcome to the internet. I suggest learning the difference between "their"and "there" befiore flaming people who are trying to help - otherwise you are leaving lots of ammunition lying around...

'It won't help it run better'

WHY

does for cars and high compression.

Depends on a lot of things - my mechanical knowledge limits are low - but I know many cars have anti-knock sensors that help the engine adjust to fuel of a lower quality than what is specified. As far as I know, most bikes don't. but I could be wrong

fck it. fck this board. the ammount of times ive seen ppl flamed for saying they do a wheelie when clearly everyone who rides a sportsbike is constantly breaking the law by speeding is a joke. whats more funny is none of you seem to see this glaring hypocracy. some dude asked about why his engine cut out when he was doing a wheelie and there was about 15 replies with 0 answers. everyone just throwing there 2 cents in.

There are forum rules in place for a reason - that is a different thread.

i read the sht on octane on howstuffworks and want to know whether high octane fuel is better or worse. you seem to say its no better or no worse. i find that hard to believe considering its been massively different when ive tried different fuels. especially noticable on my old 2 stroke 250. and i massively notice a difference when i ride with the different fuels on my 954 now.

so, for the 4th fcking time. what fuels do ppl in australia use and why? considering there is a difference in the fuels.. which one do you use/think is best and why?

Yes, there will be differences, and it depends on what the engine was tuned for. Once again, my mech knowledge is low - so I could be wrong and would gladly be corrected - but for those in the US, I'm not 100% sure of how your fuel is produced and to what level, but choice of fuel does seem to make a difference here. In terms of picking between Shell, Caltex and Mobil with regards to 98 octane fuels anyway.

Every mechanic I know warns me to stay away from Shell Optimax and go for BP or Mobil 98 octane. Whether there is a difference in a stock bike between using 95 or 98 octane premium, I do not know, could be a placibo, could be real, but I use 98 octance because that was the fuel in my tank when I got my PCIII tuned with the Arata on. In other words, my bike is correctly tuned to use that fuel.

Z...

[matt232]

Originally Posted by anthmac

yeh fair enough but i originally wanted to know which was best for the bike. cause i was the same as you just using mobil 8000 and bp ultimate. but now everyone seems to say regular unleaded is the way. 91 ron. or is premium unleaded and not high octane or high ron. anyways im just gonna try everything until i speak to someone who knows conclusively which is the best for my bike.

Why not just put a few tankfuls of each in the bike....see how may kays you get to the litre and factor in the cost component and perhaps an engine response component and then you should have something to base your own decision without taking as gospel someone elses biased opinion and YOU will know what is best for YOUR bike.

Perhaps Will, Zeeman, BrenyP or ratter (Aussie 954 riders) can offer something if you dont trust what you are seeing yourself. Shoot them a PM and direct them to the thread to see what they say.

[Scout]

Originally Posted by abtech

Believe me, being in Australia doesn't change the laws of physics when applied to reciprocating engine operation even if your water does go down the toilet ass backwards.

<whew> that one made me cry...

[anthmac]

despite the negative opinions of the yanks of what ive said ask any rider as someone else has atested to above and they will tell you there is a noticable difference between bp ultimate and other regular fuels. there just is. ild take that bet that people couldnt notice the difference. i noticed massive differences when i had my nsr running different fuels and i notice them now. that being said on the advise of the ppl who have posted i have run regular unleaded and seems to run pretty well if not better then the ultimate. the mobile 2000 for all aussies who are interested. power down low seems to get on quicker.

i dont care if someone pays out on me about whether i use there or their
who gives a fck

[brennyP]

hey mate...when my bike was stock it ran on everything..so i wouldnt stress mate...but now i have a full system and custom map its a picky bitch and some fuels it will cut out and die mid corner up the spur or when im passing cars..not cool..check ya Pm's

[Scout]

Originally Posted by Zeeman

Yes, there will be differences, and it depends on what the engine was tuned for. Once again, my mech knowledge is low - so I could be wrong and would gladly be corrected - but for those in the US, I'm not 100% sure of how your fuel is produced and to what level, but choice of fuel does seem to make a difference here. In terms of picking between Shell, Caltex and Mobil with regards to 98 octane fuels anyway.

As Zeeman said, and I agree, there are differences. One difference I can attest to is when I fill up at a certain local Chevron and run 98 Octane, my engine knocks or pings.

98 across the street at AM/PM never has made my engine ping.

Maybe not the difference you say, but it is a difference, and has happened more than once (actually twice before I said "never again").

[Fuse]

seat of the pants fuel choices in brissie... SP2 - current and previous ZX10r

In order of preference for me....

Mobil 98, BP Ultimate, Mobil 96, Vortex 98 then whatever will stop me from needing to push. Considering the price hike for each I found the 95.96? stuff from mobil to be my fav if I am feeling stingy.

The warnings about optimax are valid. Known of several people with clogged injectors (mainly on smaller bikes) and plugs being screwed. Heard of other issues (unconfirmed) suggesting staying away from the Ethanol premium blends as well.

[anthmac]

sounds like everyone from australia is saying the same thing. the high octane is faster and thats what they use. ive used regular unleaded (low ocatane) for the last 5-6 weeks an gone back to the high octane in the last couple of days and there is no doubt it pulls harder. this is just comparing mobile 2000 to the 8000. bp ultimate is clearly faster aswell. yet to try that new shell 100 but will endeavour to check it out. in the mean time im going with what all the aussies have said which is what i thought initially. thanks for all the abuse US ppls.

[rsser]

The owner's manual for my bike specifies 91 RON so that's what I run.

As posted above, the prob with Optimax is clogging. Seems that heat from the sun affects the additives and can give you a result like gel.

[anthmac]

anyone tried the the new vo2 from shell.. its like 100+

feedback.. is it all good for the bike unlike hte optimax ??