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Discussion in 'Australia' started by Sand Goanna, Feb 1, 2016.
S1 is just so spot on....I don't know why they have D.
I use S1 about 95% of the time.
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So I picked up my new AT yesterday. Super stoked with it.
The only weird one at handover was the dealer telling to use 91 fuel not 95 or 98 as it's a low compression motor. He mentioned higher octane fuels will lead to cold start issues. I have seen cold start issues posted elsewhere but fuel was not blamed.
No mention of this in the owners manual.
Any comment before I put in the first tank of gas? I can't remember the last time I even touched the 91 fuel pump.
I usually run 95 no worries at all. Occasionally run 98 no probs. I avoid 91. What does the manual recommend?
The manual sais 91 or higher I use all three 91, 95, 98. no probs.
I dont beleive that they actually benefit using 95/98 as the c r doesnt allow a full burn
Good point as it only has 10:1 compression.
Wonder if it actually runs better on the 91?
Very hard to tell from seat of the pants riding
XR600 runs a 9:1 compression ratio. Mine won't even run on properly on 91 when the temperature got over 40C. You could sure feel difference on that between low and high octane.
Just because the electronics allow you to run on low octane fuel, doesn't mean its a good idea.
I still believe that prolonged running of the AT on 91 will lead to faster valve wear and reduce engine life (same as it does on higher compression engines).
This is interesting.
It was the Honda rep that told my dealer to tell AT buyers to stick with the low octane fuel.
It'd be good to find out the facts on this one.
You sir have a jetting issue
I run mine 91, no issues at all. I dont get all wrapped up in the fuel grade wank. I would rather know that im getting a complete burn on 91 rather than blowing unburn fuel out of the pipe or running the risk of diluting engine oil. At the end of the day we all have our diffent beliefs, your bike your choice
No wonder it won't run on diesel 10.1 lol fmd
You will not have "unburnt" fuel using 91 or 98. What you will have is a slightly slower, more controlled burning with the higher octane fuel.
.........and, for those unaware...... the higher octane fuels actually have a slightly lower calorific value than 91......yep, more power in 91, but......is it usable?
The cleaning products are much better on the higher octane fuels, plus the 91 over here has 10% ethanol in it. That gives you 3 bonus features with low octane 1) much higher carbon build up on valves and ports with the not so good detergents 2) higher fuel consumption on ethanol blend 3) bonus water supply in the fuel tank, handy for when you are really parched.
Every new bike I have purchased I have had a long lecture from the service manager on NOT running low octane fuels for the above reasons.
I have run it on everything that comes out of a pump, sometimes you do have to put shit fuel in and you just know its crap (typically when the bike wont run after you have just filled the tank is a clue) but if I have the choice I would typically go for a name brand and higher octane
Love to see the data on that one, but even if it is true adding the ethanol as they do up here just kissed that goodby.
Is there anyone between Sydney and Newcastle that has their suspension done professionally and would be prepared to swap bikes for 5 mins for me to compare.
I'm looking to get mine sorted and would appreciate your review and a sample of their work.
In Australia ULP 91 is coloured purple and does not have ethanol in it, unless it marked to contain ethanol.
Shell sold a while ago IIRC a fuel labeled as 91+ and what it was, was a low grade ulp @87 octane points to which they added 10 % ethanol to reach the mandated 91 octane points minimum here in Australia.
Shell now sell an advertised E10 unleaded which comes in @94 octane points, ULP 91 + 8-10 % ethanol.
Ethanol raises the octane points but reduces the energy of the fuel due to the fact it makes the fuel lighter, (reduces it's density)
Modern fuel injected engines are more efficient at running on different fuels regardless of the octane rating as they run a lambda/oxygen sensor, along with a host of other sensors and can meet the target AFR. So an engine which 91 is recommended, can run on 95 or 98 without a problem, higher compression, performance engines which require 95 or 98 are not quite so flexible depending on the software.
Which leads us to why it's pointless point putting a high octane fuel in a carburetted engine which only needs 91, it will only run rich, consuming fuel for no power gain or better economy.