BP 98oct

[Gixxer 4 ever]

I ran the 1996 gixxer on 98 for a while. When the price went up I went back to 91. It runs fine on 91. Can be very erratic at times. Must be different mixes of fuel. I have lined up a tune from time to time but when I have got the next fill of fuel from a different station she runs like a dream.
So on the road I recon stick to 91. Different story on the track.

[vifferman]

The 98 we get in NZ is modified Ozzy 98 - because their's didn't meet our regs - so according to BP - they added some shit to make our 98. It's meant to be better than 96 - but then BP would say that wouldn't they. NZ 96 is sort of 91 but has octane boosting agents such zylene which when they 1st brought it out caused all sorts of issues with older vehicles, (it some early card carb parts) & I believe some bikers claimed it ate spark plugs. After the hysteria died down, I don't believe it causes issues with current vehicles.

Mostly correct.
They add xylene and toluene to the 91 to get 96, and it does cause problems. WHen I ran it in my VFR750, it very quickly started to run like it had water in the carbs. Turned out that it sooted up the teeny-tiny sparkplug electrodes.
On earlier vehicles, the 'new' unleaded also caused problems with some rubber components that weren't nitrile rubber, whereas most hoses, gaskets etc. now are resistant to being eaten by the paintbrush cleaner in the petrol.

Dangerous - I wouldn't bother running the 98 in your 'Storm - it won't run any better, but may lose a bit of power. If you want to stick it in anyway, mix it with some 91, so the octane rating doesn't go too high.

I've had the VFR since November now, and I can say it's much happier on either a mixture of 91 and 98, or just straight 98. On the 91, it tends to run less smoothly at low/constant throttle openings, and surprisingly, there's no discernible power loss on the 98. When I put the latest tankful of 98 in, after one of 91 with some 98, and one of only 91, it actually felt more lively, which is not what I was expecting. Of course, this is subjective, but it seemed to lift the front wheel more readily, and was definitely smoother. However, when I tried 98 in the VTR1000 and the VFR750, both performed slightly worse on the 98 than on 91.

[JohnBoy]

it goes really well in my bike in fact when i was racing i used it. but my bike is an older carb sports bike so it runs better on the higher octane stuff.

we have got it at the local now and the guys at work reckon its the go. they reckon they can notice the diff but hey, if your paying an extra 4-5c per litre it better be good!

[Toast]

When I first got my bike (2002 ZX6R, carb'd), I ran it on 91. After a while though, it felt a touch lumpy, and didn't start as nicely. I changed to 98, and it was noticeably better. It started better in the mornings and settled in to a nice idle better, and seemed to rev smoother.

One day I felt cheap and started using 91 again, and again it deteriorated. Back on 98, much better again. So, I'm sticking with it.

Apparently it is a better grade of fuel than the 96 and 91, minus the (carbed) bike unfriendly additives, which can apparently leave a red kinda jelly in the carbs (?).

[Motu]

My Falcon pinged really bad at higher speeds,which was unusual,and needed octane boosters for a trip,when BP Ultimate came out it ran like it was on 108 octane booster - but we found if you had to fill with 96 somewhere out of Auckland,it still ran ok for a couple more tanks,whatever it did had a lasting effect.

[dangerous]

Dangerous - I wouldn't bother running the 98 in your 'Storm - it won't run any better, but may lose a bit of power. If you want to stick it in anyway, mix it with some 91, so the octane rating doesn't go too high.
However, when I tried 98 in the VTR1000 and the VFR750, both performed slightly worse on the 98 than on 91.

Interesting...... I thought that a higer compresioned bike like a twin 1000 over a muilti 1000 that reves a shit lot harder would benifit from a higher oct fuel?

Also I have ran the Storm on Ave gas several times on the track.... and I swear it goes beter and thats 100oct.... your thoughts sir

[WINJA]

MY RACE BIKE PULLED HIGHER TERMINAL SPEED AND HAD BETTER ACCELERATION ON 91 OPPOSED TO 96, IT DID PING OFF THE MARK ON 91 BUT RACES ONLY HAVE ONE START, THE BIKE HAD STOCK COMPRESSION AND ADVANCE,I HAVE FOUND CARBURATED BIKES RUN BEST ON THE LOWEST OCTANE YOU CAN GET AWAY WITH, IF A BIKE HAS A KNOCK SENSOR THIS MIGHT NOT BE THE CASE, I DID NOT VERIFY IT ON THE DYNO BUT AGAINST OTHER RACE BIKES, A DYNO CAN BE MISSLEADING ON A RAM AIR BIKE AS IT CAN RUN RICH ON THE DYNO