Hi by mistake i put 97 octane in my 07/57 uly seems to run smoother why

less power

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

I would have thought the answer was a little more technical, well, live and learn.

I did put the 100 in my S3T and it ran good, but not better than the 95 stuff. I figured enouph was enouph and left it at that.

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Every Curve Has A Highside, So I've Got That Going For Me

Bad Decisions Make Good Stories

Have a read of this:

http://www.thorneymotorsport.co.uk/tuni ... ults.shtml

Been saying this about higher octane fuels for years....ever since Shell brought out 'Optimax' (now V Power).... when we noticed that it was simply a 'better' fuel than standard UL....it immediately cured pinking, starting difficulties and roughness in some cars and gave better economy.
I'd also 'felt' that it increased power but until now I'd not seen any dyno results....so thanks for that article, Grillphil.
I recommend it to all my (car) customers. Bear in mind that this is in Portsmouth, a notoriously poor city... it takes a leap of faith to fill up with this precious elixir (about 8% dearer than UL) and then wait to see if my recommendation pays off. I have had nothing but positive feedback...all report around 10% increase in mpg as well as better driveability... one chap has told me that a hill he had to tackle in 2nd before he can now breeze up in 3rd....
Only thing I can't agree with is getting it from Tesco..... I could not spend a penny of my cash with the immoral bastards....may they all die slow and painful deaths, caged like lame bald urine-soaked chickens in their own intensive factory 'farms'.

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'98 M2 Razorback, it's a keeper.

So are you saying my 1125 wil average 44mpg instead of 40 Rik if i try the dearer stuff

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

Ditto Rik, been going on about this for ever, especially re. Buells air cooled donkey.....but ya wasting ya breath with Kev.......has taken me years to get him to change the head bearings on his X1

......did you change them yet Kev ??

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Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

Can't promise you anything Kev... you'll have to spend out and see...
(tell me, what's the mean in Kevmean for? )



"There are none so blind as those that will not see" , eh Maz!

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'98 M2 Razorback, it's a keeper.

I use the better stuff, only riders with butts as thick as full kip boot
leather won't feel the difference!

Nate

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FUBAR pilot

You only need two bikes in life-an S1 and a Multistrada!

Have tried it in the X1 and can honestly say i didn't notice diddlysquat difference
Nope not changed the X1 head bearings yet..............tis only 9 years old this month and must say it feels far lighter steering than the 1125

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

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FUBAR pilot

You only need two bikes in life-an S1 and a Multistrada!

....and that's coming from a Yorky....

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'98 M2 Razorback, it's a keeper.

And quite possibly generalising

Don't want to upset my 'hosts', cos to them, I as a Londoner, am a Northerner... ...but when I said this was a poor city, what I really meant was it's a 'cheap' city... but they do understand good value for money when it's explained...

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'98 M2 Razorback, it's a keeper.

As far as I understand, the engine can only take advantage of a higher octane fuel if it can change the map for a faster flame front -can the buell system do that automatically? Otherwise, it would require tuning.