BP Ultimate

[fergie]

met a couple from england last week who said that the fuel here is real cheap compared to nz. i do remember how we moaned when it hit $1.00 a litre, but we soon got used to it, i guess we will again.

[Coyote]

It'll happen !
Know a guy who's running a 4x4 on water (petrol for start up and excelleration) and getting 900 odd km on a tank full of gas !
Up untill a few years ago anyone who knew how to do the conversions, kept quiet about it for fear of being silenced !
The technology is there, its just a matter of time till its develloped properly !
Mean while i'll just keep paying for 98

Waiting for someone to hook onto the bait?

Why do you run 98? It's slower burning so you'll get less power. You should run on the lowest octane that doesn't cause knocking.

Slower burning means it stays burning long enough to burn all of itself, rather than lower octane which leaves some fuel unburnt and goes out the exhaust.

Though I'm keen to see some blind test where people are given some fuel of unknown octane, then another lot and see whether they can spot the difference.

[Coyote]

We are being doubly screwed here. Did you hear a while back the petrol companies think NZ fuel is too cheap? It looks like they have done something about it. In the UK when unleaded 95 hit 1.00 pound/litre our price was $1.49. Yesterday the same web site had UK 95 at 1.11 and our was $1.93. So theirs has gone up by 10% or so and in the same time ours......

Does anyone else smell a big fat rat?

It be interesting to know how markets have changed the price. US dollar versus the Pound and NZ dollars.

Then again I thought the NZ Dollar had become stronger against the US whereas the Pound has stayed relatively the same against the US. This would mean the price of petrol here is even more expensive relatively. Does anyone actually know what's going on?

[henry]

Slower burning means it stays burning long enough to burn all of itself, rather than lower octane which leaves some fuel unburnt and goes out the exhaust.

Well done. That is the stupidest thing I have read on Kiwibiker.

Any sinfull is correct. The octane rating doesn't make any difference to burn speed or the energy in the fuel.

[dipshit]

Though I'm keen to see some blind test where people are given some fuel of unknown octane, then another lot and see whether they can spot the difference.

[Coyote]

Well done. That is the stupidest thing I have read on Kiwibiker.

Any sinfull is correct. The octane rating doesn't make any difference to burn speed or the energy in the fuel.

Considering I got told this from a Chemistry Teacher it's actually not as stupid as yourself. Higher Octane means more Octane hydrocarbons than Heptane and lower Octane means more Heptane in the petrol. Octane has one extra CH2 molecule over Heptane so contains more energy. It burns slower but that means the fuel gets a better chance to burn all that is there. Much like how an MSD ignition has a continuous spark so all the fuel/air mix gets ignited. Lower Octane leaves more fuel unburnt. Even the fuel companies claim the higher octane is better for fuel economy and it's not like they wish to be charged for false advertising is it?

And the higher the octane the less chance of knocking. This was proven on my Family's old high mileage car and pretty much any other older vehicle. The slower burning means the force applied to the piston is spread over a longer time, rather than a quicker bang that sends the piston knocking against the cylinder.

[Boob Johnson]

My last bike (RF900R) most certainly reacted differently to 98 & my last car as well (325 BMW Coupe). I got a more willing engine & saved a shade over $5 on a trip from Auckland to New Plymouth (360km's).

Never seen Shell Optimax? Anyone seen that hear in NZ? Not a shell servo kinda guy

[sinfull]

Nice post DS !
Wondering here if a bike can have its compression ratio increased Via reprogramming rather than taking the heads back and what other stresses would occur in doing so !
Looks like high octane likes high compression ! Worked when i rebuilt a ford v8 to run solely on lpg ! 302 heads on a 351 gave me 11 / 1 compression and it went like a petrol engine !
Edit / Ok thought about it lol like there aint no way to up the compression by other means duh ! the stoke of a piston is the stroke of that piston so without ripping into the guts ya aint gonna change nothin !
if ya bikes manufacturer says 91 ya may as well save a few centsa ltr !~
But if yr in the process of a rebuild its worth looking into for a few more horses i guess !!

[Boob Johnson]

Well done. That is the stupidest thing I have read on Kiwibiker.

Arrrr so once it's proven you were full of crap you wanna throw your toys out of the cot?

[AllanB]

When I purchased my Hornet 900 I was told to run it on 91 - owners book also says this is OK - I did a tank on the higher stuff - no difference at all other than to my wallet. 91 is just fine.

[henry]

Arrrr so once it's proven you were full of crap you wanna throw your toys out of the cot?

I made an incorrect statement, which was corrected by sinful, and I admitted my mistake. Then Coyote backs up my original mistake and throws in some completely arse about face logic which he follows up with a claim that our education system and the petrol companies are the paragons of credibility!

How does any of that warrant your comments?

[Biggles2000]

Great video. It was good to see some actual dyno testing done on the fuels.

I dont think Shell do a high octane fuel, only Mobil in the north island and BP in some stations.

[avgas]

Here is an interesting consideration that only really applies to NZ.
How do they separate Diesel, 91, 96, 98 when they produce these fuel? (rhetorical i found out the answer already).
The reason i bring this up was the fact that my sisters Diesel Camry died some years ago (as did a large number of diesels) and while doing some research we came to the conclusion that it was crap in the diesel (in our case too much sulphur and heavy metals).
Now tell me, if there was to be crap in fuels, which fuel would it end up in?

[ManDownUnder]

I had to laugh - went to the local petrol station... looked at the $$$ meter going up at a scary rate for the guy in his flash V6 4WD thingy drinking the expensive stuff...

$150... $160... etc LOL

It put the $4 bottle of milk in perspective! LMAO!

[Ixion]

Petrol's petrol. They'll get what they're given and think themselves lucky if it's not kerosene