Petrol..... what do you feed yours? and why?

What fuel is best for your GS? (you can chose more then one.)

  • does not matter..... the cheapest?

    Votes: 24 51.1%
  • no supermarket stuff?

    Votes: 0 0.0%
  • BP Ultimate?

    Votes: 0 0.0%
  • Shell Optimax?

    Votes: 4 8.5%
  • any 95 octane from a good brand?

    Votes: 20 42.6%
  • it must be 97 octane?

    Votes: 0 0.0%

  • Total voters
    47
  • Poll closed .
Re: what a strange lot you are.

Joyseeker said:
over 700 views and only 60 votes

700 views doesn't mean 700 different people have viewed the thread, it just means the thread hs been viewed a total of 700 times. It could have been the same person clicking 700 times :)
 
Ride magazine have just done an independant test on Optimax and Ultimate, the results point to a small improvement in performance over normal unleaded petrol.
 
gavin said:
Ride magazine have just done an independant test on Optimax and Ultimate, the results point to a small improvement in performance over normal unleaded petrol.
How much though? Does it make it worth the price differential?
 
Best was 1.9%bhp increase for 5.8% more cost. suzuki gsxr600 on optimax. They didn't do the mpg thing, where most folk seem to notice it.

My bike feels marginally smoother on optimax/ultimate but I've never done a lot of identical runs to measure the mpg properly.
 
ianf said:
Best was 1.9%bhp increase for 5.8% more cost. suzuki gsxr600 on optimax. They didn't do the mpg thing, where most folk seem to notice it.

My bike feels marginally smoother on optimax/ultimate but I've never done a lot of identical runs to measure the mpg properly.
Page 10, paragraph highlighted in red,....On the road the power gains translate into the rider needing less throttle per given bhp, which should return a better mpg.
 
Up here in my parallel universe almost all hydrocarbon blends according to BS whatever at 95RON have the same calorific value and knock capacity.
And the stuff that I buy at the BP/SHELL/EXXON/TOTAL galactic gas station, regardless of the company logo, comes from the nearest galactic refinery belonging to any of the above or their associates and gets rebranded when it is pumped into the gas station storage tanks. This is because we are stupid and they know how much it costs to ship that stuff around the galaxy by tanker. So some special BP or Shell brew at 97RON plus bells and whistles probably has some stuff added by whoever makes the base stock. If you like the taste, buy it.

If some odd stuff with free-ish oxygen molecules are added we could get a bit(even a lot with nitrous)more power if the compression ratio/fuel mixture etc automatically adjusted. Strangely those Bavarians only allowed for knock detection and ignition retard-and that has the opposite effect when lower RON gas is used. The poor CPU has no idea about the high quality stuff as it does not induce knock(or more correctly, less tendency to knock known to the CPU) and the baseline is set for 95 RON. This reflects their thinking being limited to your puny galaxy, but then a kraut is a kraut.

The idea that we, or a bunch of engineeringly illiterate journos from Ride, can really measure 1.9% and 5.8% improvement in bike performance/economy does not merit punching keys. Have they been at that good stuff on Signus minor 1083 again?

The dynos and other instruments they use have an inherent overall innacuracy greater than the deviation they report, or is it just the red shift.

And be prepared when next year we launch in your galaxy the Super Duper SAE 0.001 to 0.005 weight multigrade 101% synthetic engine oil from Galactic Fool Oil Corporation which reduces oil consumption to minus one litre per 1000 kilometres and rebuilds the friggin motor overnight in your very own garage at major service intervals. Of course for the true afficionados we will also be offering the premium 110% stuff which rebalances the throttles at 0.001 millisecond intervals on the fly as you ride, and adjusts the seat cushion to your delicate requirements at every rest stop. And all this for two grand a litre 101% and only three grand for 110%. Now this is THE aftermarket product of the new millenium.

Incidentally, is IOW a class A or class B planet in your galaxy?
 
TerryM said:

And be prepared when next year we launch in your galaxy the Super Duper SAE 0.001 to 0.005 weight multigrade 101% synthetic engine oil from Galactic Fool Oil Corporation which reduces oil consumption to minus one litre per 1000 kilometres and rebuilds the friggin motor overnight in your very own garage at major service intervals. Of course for the true afficionados we will also be offering the premium 110% stuff which rebalances the throttles at 0.001 millisecond intervals on the fly as you ride, and adjusts the seat cushion to your delicate requirements at every rest stop. And all this for two grand a litre 101% and only three grand for 110%. Now this is THE aftermarket product of the new millenium.
Shit, I *need* the 110% stuff NOW, can you get it from Halfords??
 
BP Ultimate in Australia is quoted at 98 octane, and although prices vary by anything up to 12 cents a litre day to day, a rough average per litre would be:
Standard $0.98
Premium $1.04
Ultimate $1.09
I have tried all three fuels on the R1200GS, F650 Dakar, and my Subaru Outback, and find that I get an average of 15% better fuel economy with Ultimate over Standard, and noticeably better performance, particularly in very hot weather.
The performance difference doesn't seem as marked in cooler weather, but that's just seat of the pants stuff.
Haven't done an economy comparison with Premium vs Ultimate.
So for me, Ultimate seems worth the extra money.
 
Just called at the local Shell Garage.....

79.9p per Litre unleaded

94.9p per Litre Optimax

That is one hell-of-a-difference now..... 15p!!

Is Optimax really giving 20%-ish better performance/mpg or am I missing something here :confused:

CC

:cool:
 
coolcarbon said:
Just called at the local Shell Garage.....

79.9p per Litre unleaded

94.9p per Litre Optimax

That is one hell-of-a-difference now..... 15p!!

Is Optimax really giving 20%-ish better performance/mpg or am I missing something here :confused:

CC

:cool:
Only if the engine is fully capable of both sensing and utilising the increased octane fuel - ie through the use of a knock sensor. Even then % saving would be up for testing and also relate to c/ratio
 
Tsk Tsk Tsk....

what heavenly sarcasm !!!! but soooo true!


TerryM said:
Up here in my parallel universe almost all hydrocarbon blends according to BS whatever at 95RON have the same calorific value and knock capacity.
And the stuff that I buy at the BP/SHELL/EXXON/TOTAL galactic gas station, regardless of the company logo, comes from the nearest galactic refinery belonging to any of the above or their associates and gets rebranded when it is pumped into the gas station storage tanks. This is because we are stupid and they know how much it costs to ship that stuff around the galaxy by tanker. So some special BP or Shell brew at 97RON plus bells and whistles probably has some stuff added by whoever makes the base stock. If you like the taste, buy it.

If some odd stuff with free-ish oxygen molecules are added we could get a bit(even a lot with nitrous)more power if the compression ratio/fuel mixture etc automatically adjusted. Strangely those Bavarians only allowed for knock detection and ignition retard-and that has the opposite effect when lower RON gas is used. The poor CPU has no idea about the high quality stuff as it does not induce knock(or more correctly, less tendency to knock known to the CPU) and the baseline is set for 95 RON. This reflects their thinking being limited to your puny galaxy, but then a kraut is a kraut.

The idea that we, or a bunch of engineeringly illiterate journos from Ride, can really measure 1.9% and 5.8% improvement in bike performance/economy does not merit punching keys. Have they been at that good stuff on Signus minor 1083 again?

The dynos and other instruments they use have an inherent overall innacuracy greater than the deviation they report, or is it just the red shift.

And be prepared when next year we launch in your galaxy the Super Duper SAE 0.001 to 0.005 weight multigrade 101% synthetic engine oil from Galactic Fool Oil Corporation which reduces oil consumption to minus one litre per 1000 kilometres and rebuilds the friggin motor overnight in your very own garage at major service intervals. Of course for the true afficionados we will also be offering the premium 110% stuff which rebalances the throttles at 0.001 millisecond intervals on the fly as you ride, and adjusts the seat cushion to your delicate requirements at every rest stop. And all this for two grand a litre 101% and only three grand for 110%. Now this is THE aftermarket product of the new millenium.

Incidentally, is IOW a class A or class B planet in your galaxy?
;) :P
 
TerryM said:

Incidentally, is IOW a class A or class B planet in your galaxy?

Not sure, but Essex is twinned with Zarg, in the Outer Nanonia galaxy.

On the fuel, tried Optimax for two tanks, and can I spot the difference? Can I f@#k! It could be that I'm not in tune with the finer workings of my machine - or it could just be that there's no difference!

:dabone
 
Daily Telegraph last weekend

Copied from there:

Shell's Optimax petrol probably won't improve the performance of your car, according to the media regulator Ofcom, writes Matt Warman. Shell was censured this week for implying that its 98Ron fuel could provide extra power for all motorists, when in fact only a small number of appropriately tuned cars derive any performance benefit. Ofcom ordered the commercial off the air and called the statement misleading.

Here's the link:

http://www.telegraph.co.uk/motoring/main.jhtml?xml=/motoring/2005/01/08/mnu08.xml

Says something doesn't it?
 
Well a fool and his money are soon parted, as they say.

Unless your machine is set up with the compression ratio to utilise 98RON, don't bother. I'm sure you can get a minute (1%) increase in power due to the additives - but they could put those in 95RON with the same effect. As per Ofcom decision, its all just marketing hype.

I'd love to know how many of the charvers in their 1.2 Novas use 98RON:D
 


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