Honda ST1100 Section > Fuel & Fuel Additives ST1100

Does Premium fuel have all the additives?

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alans1100:

--- Quote from: saaz on March 11, 2012, 07:01:11 PM ---On a carby motor like the ST11 I have found that E10 can give at least as good if not better economy as normal 91 and above. I think this is due to it being a more oxygenated fuel and it runs leaner in a carb bike, so perhaps better economy even though it has less energy per litre than a 100% petrol.

--- End quote ---

I can add that while I spent about 4 weeks at my dad's place last year and using E10 while I was there That by the end of my third tankful my fuel consumption decreased by about 1.5 ks/l. It could have been a one off, I won't know as I moved back home and back to ULP.

One thing to note is That dad's local United service station has Premium 100, Unleaded, Unleaded E10 as far as unleaded fuels are concerned

saaz:
My local Caltex only has E10, 95 and 98 (and some diesel for those so inclined) so it is hard to make an objective comparison between E10 and 91 now.  I think the riding conditions and where you buy fuel (high turnover etc) make more difference than whether it is E10 or not.  I have had good and bad batches of E10 and 91 when on trips, and in the car have had 98 and 95 that acted more like 91.

rocketeer:
Fuel quality and additives seem to be different between states, even cities.  In Brisbane, I am told by a very reliable source, that most fuels come through a pipeline from a single refinery to one of several depots, where mostly a dye is added, but I have a feeling some additives.  Cheap fuel service stations actually ship fuel from down south.

From what I have noticed, BP Ultimate seems the go, followed by Castrol.  I have noted some people religiously running one brand of higher priced fuel do get fuel economy improvements, across different vehicles.  They are also typically quite clean internally.  The trouble is, the additional economy is usually far outweighed by the additional price- 15c per litre I think last time I took notice.

Is it worth it?  Depending how you look at it.  For the extra km per tank?  No way. For the fact that you are using a 'better' fuel that does clean and provides a better burn?  I am undecided.  I still typically use BP or Caltex standard unleaded, unless there is a reason to use higher octane.  But keeping in mind I run a fuel system conditioner that does most of what the higher priced fuels do, except increase RON and oxygen levels.

Brad

rocketeer:
The one thing I believe higher octane fuels have over standard is oxygen content.  One Toyota corolla comes to mind, he drove like a granny, but religiously used shell V power. When we went through the exercise of calculating cost vs potential savings he decided to put it on straight unleaded. He noted a power loss, as well as a healthy loss in km.  I can't r remember how many, but I do know it was notable. One thing that was very interesting was that testing his oil showed a slight amount of fuel- overfuelling or fuel system issues such as a blocked  injector could have caused this, though he was happy with how the car ran so it would have really only been a minor issue, but may be part of why the fuel economy benefit.  Same with gaining economy using ethanol, I wonder if that bike is running rich to have fuel economy gains.

Unfortunately I simply haven't researched fuel past using what feels good or

terrydj:
First "Öil" now "Petrol" Makes me think how I have gotten so great milage out of the vehicles I have owned without knowing the stuff some people think is important :think1
Hmmmm, all of the bikes I've owned at least the 150000 kay mark with at least one 1/2 a million. A couple of cars with well over the 200000, the old XD with 1/2 a million but that was mostly on gas. The wifes current Mirage, close on the 300000 and all without knowing bugger all about oils and what petrol to put in.
Suppose I've just been lucky

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