KiwiGriff
Thought I'd share a wee dit with you even if a little embarrassing....it may help someone else out.  This bike (new to me) is fitted with a PCV, stage 1 air, stage 2 cams, and custom true dual exhausts and has been dyno'd. 

Bit of a rookie mistake, and a habit of 40+ years and a dozen bikes that ran happily on 91 Octane fuel......I've always been a 'use the lowest octane you can so that it doesn't pink or knock' kind of guy.  So I read '91 Octane' in the owners manual, and I've never had a biked that NEEDED higher octane before.  My habit saw me not even think about using different gas when I filled the tank for the first time recently.  But 91 Octane (as per the owners manual) is using a different measuring method compared to what we have here in NZ on the pump.  91 Octane as per the manual is actually 98 Premium here. 

Gawd - it sounded like a tractor when I took off today, with no pulling power and generally just yuk!  Couple of misfire messages and an engine light.  Of course, I had pretty much a full tank of gas.  Got to the closest Auto Store and got some octane booster.  Chucked it in and went for a ride on the back country roads.  Stopped a few times to restart the bike and then after about 150k's I stopped again.  About two minutes after I started the bike the last time, it just sat up and said, 'here I am!', started purring, and the engine light went off!  Two hundred and fifty + kilometres and $34NZD later for the Octane Booster all is well again.  Lovely day for a ride here anyway! :-)  Stay upright now.
Patriots Defence Force MC
2018 Roadmaster, 2015 Rocket III Touring, 1981 Suzuki GS1000G
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tallackn

Hey Griff,

I'm here in NZ, and pop in the BP Ultimate 98 into my 2018 Scout with no problems.  The BP Premium 95 is closest to the 96 that is needed in our measurements which aligns to the 91 in the USA, but I'd rather go 2 higher than 1 lower.

Mind you, I don't get any problem with the BP 95 Ultimate when I am at a station that does not have the 98, so no problem I guess.

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KiwiGriff
Yep, I'll be running 98 as I agree with your logic.  As I said, a rookie mistake and one of not paying attention to the detail (it clearly says in the manual '91 pump octane minimum (R+M/2 Method)'......What I didn't do was research what the R + M/2 method was! :-) Lesson learnt....  Cheers, Griff
Patriots Defence Force MC
2018 Roadmaster, 2015 Rocket III Touring, 1981 Suzuki GS1000G
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Numbat
G'day Griff

I always use the BP Ultimate 98.

If the dealer hadn't actually pointed it out when purchased the bike I guarantee I would have made the mistake  (Have no idea what the R + M/2 method  is)😕

They said the BP 95 Ultimate would suffice but recommended BP Ultimate 98 if available
Brad - SoR, Perth WA

2018 Indian Chief Vintage (Willow Green & Ivory)
Stage 3 116 Big Bore Kit, Stage 1 Pipes, fishtails & air cleaner
Beach Bars
IMRG: AU102531
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Dr.Shifty
Numbat wrote:
G'day Griff

I always use the BP Ultimate 98.
If the dealer hadn't actually pointed it out when purchased the bike I guarantee I would have made the mistake  (Have no idea what the R + M/2 method  is)😕


It's a bit of a dog's breakfast, but works like this.
RON MON table.jpg 
Cheers, Kim.

From Woodrising (no, nobody else has heard of it either)
Rides a Springfield Dark Horse
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KiwiGriff
Dr.Shifty wrote:


It's a bit of a dog's breakfast, but works like this.
RON MON table.jpg 

Cheers Kim - yeah, it has 98 in it now!  I found an even more specific comparison table on Wikipedia that has specific countries and comparisons between them.  Thanks for taking the time.
Patriots Defence Force MC
2018 Roadmaster, 2015 Rocket III Touring, 1981 Suzuki GS1000G
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tallackn
Wikipedia link Griff?  Your google foo is much better than mine it seems.  🙁
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KiwiGriff
No worries.
https://en.wikipedia.org/wiki/Octane_rating

after the description of all the methods there's a table.
Patriots Defence Force MC
2018 Roadmaster, 2015 Rocket III Touring, 1981 Suzuki GS1000G
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tallackn
Legend.
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Numbat
Yikes.........it used to be so simple
Brad - SoR, Perth WA

2018 Indian Chief Vintage (Willow Green & Ivory)
Stage 3 116 Big Bore Kit, Stage 1 Pipes, fishtails & air cleaner
Beach Bars
IMRG: AU102531
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