i used to run my subaru on 99 ron tesco or shell v power and silkolene octane booster.
cost me a fookin fortune but made a difference mate.
but i could never fill up where i wanted to cos the car was mapped to run on it,which was a right pain in the arse when your in the middle of nowhere.
it had to be set up on the scoobs tho to make a big difference and mapped.
although the ecu was self learning to a certain degree in the newer 2001 on cars.
cost me a fookin fortune but made a difference mate.
but i could never fill up where i wanted to cos the car was mapped to run on it,which was a right pain in the arse when your in the middle of nowhere.
it had to be set up on the scoobs tho to make a big difference and mapped.
although the ecu was self learning to a certain degree in the newer 2001 on cars.
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Joined Jan 2008
1K Posts | 0+
Essex
If you drive more economically using a high octane fuel you will get more miles to the gallon, and eventually you will see a saving, as the engine will become more efficient. But there are a high number of variables so it depends on the vehicle and driver.
Agree 100% (see previous post). Its like the the Tesco finest range, which is very clever marketing to justify a huge price mark up.
Joined Jan 2008
1K Posts | 0+
Essex
I think trading standards would have something to say about that, and ask why certain cars have to run on a higher octane fuel, when the fuel is of a higher octane the fuel is less likely to detonate (pink) there for all the fuel(power) is used at the right time making it more efficient and none will be wasted even if the ecu steps in and adjusts the timing/ignition whilst its making that adjustment which takes no time at all but still its having to make a adjustment meaning the engine is not running in its optimum performance/efficiency window. Trust me i'm a doctor
Joined Jan 2008
1K Posts | 0+
Essex
Dont get me wrong they are robbing *******s, but i'm just answering the original question with my well informed opinion.
as said,we had to have the scoobs mapped and set up to make a difference,the jap imports were set to run on 102ron fuel iirc,and have to be run with the highest ron fuel over here plus octane booster,certainly made em pop and bang and spit flames better.lol
Joined Oct 2007
63 Posts | 0+
MSmilleR is bang on with this one !!!
As a tanker driver for one of the top petrol companies I can tell you there is a difference.
Fuel like Shell v power and bp ultimate unleaded are a higher octane (97) where normal unleaded is 95, this means it burns better...hence better performance and miles to the gallon, a lot of it is down to the additives that go into the fuel too, which are injected into the fuel as we load it.
Thats why I won't put supermarket fuel in the bike or car, they don't get the same amount of additives in their fuel as the top brand fuels so you don't get as good a fuel economy and you will usually find you engine won't run as smooth.
If you want to test this out try running your car or bike on supermarket fuel for a couple of tank fulls then run it on a well known brand unleaded for 2 tank fulls then do the same with the v power or bp ultimate and I bet you will see and feel a improvement.
It will have to be at least 2 tank fulls for it to get into the system and see the difference.
Read this.......http://www.bp.com/sectiongenericarticle.do?categoryId=4005571&contentId=7009025
As a tanker driver for one of the top petrol companies I can tell you there is a difference.
Fuel like Shell v power and bp ultimate unleaded are a higher octane (97) where normal unleaded is 95, this means it burns better...hence better performance and miles to the gallon, a lot of it is down to the additives that go into the fuel too, which are injected into the fuel as we load it.
Thats why I won't put supermarket fuel in the bike or car, they don't get the same amount of additives in their fuel as the top brand fuels so you don't get as good a fuel economy and you will usually find you engine won't run as smooth.
If you want to test this out try running your car or bike on supermarket fuel for a couple of tank fulls then run it on a well known brand unleaded for 2 tank fulls then do the same with the v power or bp ultimate and I bet you will see and feel a improvement.
It will have to be at least 2 tank fulls for it to get into the system and see the difference.
Read this.......http://www.bp.com/sectiongenericarticle.do?categoryId=4005571&contentId=7009025
Joined Jan 2008
600 Posts | 0+
Essex
Shall i give you the correct information.
i spent 6 years in the motor trade as a qualified fitter, and the last 20 years working in the oil refining business. so i have made the stuff and understand how it works in the engine.
The higher the octane or ron number the higher the cylinder pressures in the engine can be run.
higher performance engines run higher cylinder pressures, due to higher compression ratios. this gives higher performance, but requires a higher octane fuel to stop the pre ignition (pinking)
if you run a high compression engine on low 95 ron fuel it will pink like a *******.
running a standard compression engine on high octane fuel has very little benifit. there will be benifits, but they will be minimal. not worth the added cost.
the reason for not running certain supermarket petrols is because they are inferior quality fuel from eastern europe, they only just scrape through as being acceptable for use in the uk. they contain a higher percentage of low octane heavy ends and the ron is then raised by injecting butane into the fuel. when the butane evapourates from the tank, whats left is *****.
all top brand refinary fuel is actually slightly higher spec than they advertise. they work to a higher wrap around. and the blended components that are used are of a much higher quality.
all i will say is that sainsbury use BP fuel. which is of high quality. but thats not who i work for, mine do v power.
i spent 6 years in the motor trade as a qualified fitter, and the last 20 years working in the oil refining business. so i have made the stuff and understand how it works in the engine.
The higher the octane or ron number the higher the cylinder pressures in the engine can be run.
higher performance engines run higher cylinder pressures, due to higher compression ratios. this gives higher performance, but requires a higher octane fuel to stop the pre ignition (pinking)
if you run a high compression engine on low 95 ron fuel it will pink like a *******.
running a standard compression engine on high octane fuel has very little benifit. there will be benifits, but they will be minimal. not worth the added cost.
the reason for not running certain supermarket petrols is because they are inferior quality fuel from eastern europe, they only just scrape through as being acceptable for use in the uk. they contain a higher percentage of low octane heavy ends and the ron is then raised by injecting butane into the fuel. when the butane evapourates from the tank, whats left is *****.
all top brand refinary fuel is actually slightly higher spec than they advertise. they work to a higher wrap around. and the blended components that are used are of a much higher quality.
all i will say is that sainsbury use BP fuel. which is of high quality. but thats not who i work for, mine do v power.
yup,all the subaru and mitsubishi evo drivers swear by shell v-power or tesco 99ron,as used in the british rally.i think bp is 98 ron,1 ron lower than shell and tesco,its the same as said above,as sainsburys super unleaded.
the silkolene octane booster deffo perked things up tho,as sold by cmc bikes ect.
this is the magic stuff
silkolene pro boost
and here
the silkolene octane booster deffo perked things up tho,as sold by cmc bikes ect.
this is the magic stuff
silkolene pro boost
and here
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Joined Oct 2007
63 Posts | 0+
heroblob..As you work in the refining side of the business you will most likely know what the additives are that are injected into the fuel when we load (petrol and diesel) and what they do.
I work for BP and know that sainsburys only get half the dose of additive in the petrol and none in the diesel, so what difference will that make to their fuel?
I work for BP and know that sainsburys only get half the dose of additive in the petrol and none in the diesel, so what difference will that make to their fuel?
Joined Jan 2008
600 Posts | 0+
Essex
Sorry i have been away a while, things happen at work.
Most of the addatives have zero to do with octane boosting, and performance enhancement. they are cleaning addatives, designed to improve combustion and reduce carbon deposits, all very good, but not essential. the important thing is the quality of the base fuel.
be careful of tesco high octane fuel. it is still eastern european cheap ***** base fuel. peped up with butane to increase the octane.
Most of the addatives have zero to do with octane boosting, and performance enhancement. they are cleaning addatives, designed to improve combustion and reduce carbon deposits, all very good, but not essential. the important thing is the quality of the base fuel.
be careful of tesco high octane fuel. it is still eastern european cheap ***** base fuel. peped up with butane to increase the octane.
Joined Jul 2008
97 Posts | 0+
i thought supermarkets get there fuel from the same refineries, as i beleive none of the supermarkets own refineries, and after doing some research the ron rating is how easy the fuel is to ignite or in other words higher ron will be less likeley to pre ignite (pinking) in high comp head but means its also harder to fire (start) also i believe the mille engine (1998-2003) has a compression ratio of 11.4 to 1 and so should easily run on 95 ron fuel unless the engine has had the compression ratio raised
Joined Jan 2008
600 Posts | 0+
Essex
supermarkets dont have refineries.
In 1999 some of the supermarkets got into bed with certain refinaries. ie sainsburys did a deal with BP to supply their fuel. others on the other hand decided to buy on the spot market, whoever is the cheapest. this has ended up being eastern europe where there is a glut of fuel.
so be careful some supermarket fuel is **** rubbish, some is supplied buy proper refinaries, albeit without some of the addatives.
yes all standard rsv's run perfectly fine on 95 ron,
however if you race tune the engine and increase the compression ratio you will have to run higher octane fuel to stop the thing pinking
In 1999 some of the supermarkets got into bed with certain refinaries. ie sainsburys did a deal with BP to supply their fuel. others on the other hand decided to buy on the spot market, whoever is the cheapest. this has ended up being eastern europe where there is a glut of fuel.
so be careful some supermarket fuel is **** rubbish, some is supplied buy proper refinaries, albeit without some of the addatives.
yes all standard rsv's run perfectly fine on 95 ron,
however if you race tune the engine and increase the compression ratio you will have to run higher octane fuel to stop the thing pinking
