Tesco 99 RON - Locations
Discussion
Tony_666 recommended the 99RON tesco fuel - it's great ! Bang's & pop's galor
here's the list of Tesco's which stock it
www.greenergy.com/products/99_octane_locations.html
DFLROWLAND said:
ferrari355gtb said:
[quote=DFLROWLAND]i was actually told not to run my old 360 spider on super unleaded.
[quote]
Who told you that ???
[quote]
Who told you that ???
the salesman from egham. he said the car was set up & optimised for regular unleaded & super unleaded would be a waste of time...
did he also say your car would be worth the same amount if not more when you come to sell it
Jonny5 said:
DFLROWLAND said:
ferrari355gtb said:
[quote=DFLROWLAND]i was actually told not to run my old 360 spider on super unleaded.
[quote]
Who told you that ???
[quote]
Who told you that ???
the salesman from egham. he said the car was set up & optimised for regular unleaded & super unleaded would be a waste of time...
did he also say your car would be worth the same amount if not more when you come to sell it
well it f*cking wasnt!!! doesnt matter now. cars long gone. guess i will run the spyder on 99RON then if it wont cause a problem...if i recall right, higher octane ratio petrol wont increase a cars performance. octane ratio is a measure of the fuel's ability to resist compression i.e a car that was designed solely for use with 98, 100 or whatever octane petrol could run a higher compression ratio. however if a car is designed to be run on 95 ron then it has to have a compression ratio related to that. therefore no point in 98 ron.
there are other properties to fuels that would distinguish different quality but the ron measurement is not a measure of this. There could be other benefits from a performance fuel in the additive packages, but as the earlier post here said, there should be no direct performance benefit from running a higher ron fuel unless you changed the compression ratio...
having said that some people swear that the fuel they use makes the car run better... this may well be true but bear in mind its also quite handy for the fuel company to get you to spend 10% more on your petrol
there are other properties to fuels that would distinguish different quality but the ron measurement is not a measure of this. There could be other benefits from a performance fuel in the additive packages, but as the earlier post here said, there should be no direct performance benefit from running a higher ron fuel unless you changed the compression ratio...
having said that some people swear that the fuel they use makes the car run better... this may well be true but bear in mind its also quite handy for the fuel company to get you to spend 10% more on your petrol
Andy
That's not quite right - The higher the octane, the more the resistance to detonation ie compression ignition.
All cars sold in the EU (legitimately rather than grey imports) MUST legally be able to run on 95 RON at a minimum. That does not mean they will not give more power at higher octane levels. In fact it depends on the engine management system and whether this self adapts to the fuel being burned dynamically rather than after a reset. The point is that when the onset of detonation is detected through vibration sensors on the engine block, the engine ECU will retard the ignition and richen out the mixture. This action massively reduces power in an instant but crucially avoids detonation that would otherwise destroy an engine in seconds.
If detonation can be delayed through the octane level of the fuel, more ignition advance / higher compression ratios / more supercharging boost can all be tolerated and therefore more power will be able to be developed. The key in each case is whether your particular ECU can take advantage of it.
Hope this helps
That's not quite right - The higher the octane, the more the resistance to detonation ie compression ignition.
All cars sold in the EU (legitimately rather than grey imports) MUST legally be able to run on 95 RON at a minimum. That does not mean they will not give more power at higher octane levels. In fact it depends on the engine management system and whether this self adapts to the fuel being burned dynamically rather than after a reset. The point is that when the onset of detonation is detected through vibration sensors on the engine block, the engine ECU will retard the ignition and richen out the mixture. This action massively reduces power in an instant but crucially avoids detonation that would otherwise destroy an engine in seconds.
If detonation can be delayed through the octane level of the fuel, more ignition advance / higher compression ratios / more supercharging boost can all be tolerated and therefore more power will be able to be developed. The key in each case is whether your particular ECU can take advantage of it.
Hope this helps
nigelo said:
Andy
That's not quite right - The higher the octane, the more the resistance to detonation ie compression ignition.
All cars sold in the EU (legitimately rather than grey imports) MUST legally be able to run on 95 RON at a minimum. That does not mean they will not give more power at higher octane levels. In fact it depends on the engine management system and whether this self adapts to the fuel being burned dynamically rather than after a reset. The point is that when the onset of detonation is detected through vibration sensors on the engine block, the engine ECU will retard the ignition and richen out the mixture. This action massively reduces power in an instant but crucially avoids detonation that would otherwise destroy an engine in seconds.
If detonation can be delayed through the octane level of the fuel, more ignition advance / higher compression ratios / more supercharging boost can all be tolerated and therefore more power will be able to be developed. The key in each case is whether your particular ECU can take advantage of it.
Hope this helps
That's not quite right - The higher the octane, the more the resistance to detonation ie compression ignition.
All cars sold in the EU (legitimately rather than grey imports) MUST legally be able to run on 95 RON at a minimum. That does not mean they will not give more power at higher octane levels. In fact it depends on the engine management system and whether this self adapts to the fuel being burned dynamically rather than after a reset. The point is that when the onset of detonation is detected through vibration sensors on the engine block, the engine ECU will retard the ignition and richen out the mixture. This action massively reduces power in an instant but crucially avoids detonation that would otherwise destroy an engine in seconds.
If detonation can be delayed through the octane level of the fuel, more ignition advance / higher compression ratios / more supercharging boost can all be tolerated and therefore more power will be able to be developed. The key in each case is whether your particular ECU can take advantage of it.
Hope this helps
I'd just typed something out along those lines, but yours is much better put than my ramblings were!
ferrari355gtb said:
The 360 has an adjustable ECU (if that's the right word). Might not be noticeable immediately but it will be when you change back to 95.
thanks for the info. doesnt matter though as i've sold it now.
what i really want to know is whether the gallardo spyder has an 'adjustable' ECU to take advantage of this fuel. theres enough spyder/'06 model owners on here now to get a definitive answer surely...
DFLROWLAND said:
ferrari355gtb said:
The 360 has an adjustable ECU (if that's the right word). Might not be noticeable immediately but it will be when you change back to 95.
thanks for the info. doesnt matter though as i've sold it now.
what i really want to know is whether the gallardo spyder has an 'adjustable' ECU to take advantage of this fuel. theres enough spyder/'06 model owners on here now to get a definitive answer surely...
On my way to work I go past Shell, BP and Esso
The Gallardo Sypder definitely works marginally better with Shell and Esso fuel,
a bit of advice for you (and it might just be the BP service station in Wandsworth) is that the BP petrol pumps don’t work properly with the Gallardo – keeps cutting out
I used to find with the 360 that it made no difference what fuel I used (cheapest ASDA to the best Shell).
That is not the case with the Gallardo, my wife filled the car up with cheap Tesco petrol the other day and the afterwards the revs wouldn’t stay stable when in N
When i first bought the G, and I've heard of others suffering the same problem, the engine would judder at 2,200 rpm in any gear. Some love and care from Simon the tech. at Stockport sorted this out, but if i use standard fuel I can just feel the engine misbehaving a little at 2,200 rmp, and it just feels / sounds rough compared to using Shell Optimax. I doubt I'd notice the difference other than I use my G for 2 hours + every day, much of which is coasting along at 40 - 45 mph, if i was just going out for a blast at the weekend i don't think I'd notice the difference.
Jump from a 05 G into an 06 and the engine / gear changes feel smoother anyway, so not sure if this would make any difference in an 06 G. Another point – mpg goes up by about 1.5 when using Shell Opti(bloody expensive)max – best i’ve recorded was 18.8mpg after a run to the south coast and back, but typically during the week it’s 17.5 mpg – for some reason this drops dramatically over sunny weekends, which is a total enigma.
Regards
Simon
Jump from a 05 G into an 06 and the engine / gear changes feel smoother anyway, so not sure if this would make any difference in an 06 G. Another point – mpg goes up by about 1.5 when using Shell Opti(bloody expensive)max – best i’ve recorded was 18.8mpg after a run to the south coast and back, but typically during the week it’s 17.5 mpg – for some reason this drops dramatically over sunny weekends, which is a total enigma.
Regards
Simon
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