FUEL
23 June 2011, 09:53 PM
#1
FUEL
Went to put some super in the car tonight at my usual garage but found they were out of stock. Decided to try the Tesco momentum stuff as I've read some good things recently about it. I was totally against supermarket fuel as a rule but thought sod it, I'll try.
Stuck a scores worth in and went inside to pay. While waiting for the chip and pin thing I asked the fella behind the counter what the RON of the momentum was, he reckons it's only 97. He said he knew this as he was asked a while ago so looked it up.
I thought it was supposed to be 99 or 100 Ron fuel.
Has he made a mistake saying 97 ?? He seemed pretty certain though.
Stuck a scores worth in and went inside to pay. While waiting for the chip and pin thing I asked the fella behind the counter what the RON of the momentum was, he reckons it's only 97. He said he knew this as he was asked a while ago so looked it up.
I thought it was supposed to be 99 or 100 Ron fuel.
Has he made a mistake saying 97 ?? He seemed pretty certain though.
23 June 2011, 09:59 PM
#2
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Ignore him, doesn't even know the product he's selling.
http://www.tesco.com/momentum99/
I have used it and had no problem although some say it isn't too good for the engine. Think it's to do with the additives they use.
http://www.tesco.com/momentum99/
I have used it and had no problem although some say it isn't too good for the engine. Think it's to do with the additives they use.
23 June 2011, 10:03 PM
#4
It didn't say 'momentum99' on the pump, just 'momentum'. Gotta be the same stuff though surely.
Don't really know why I put it in to be honest, as a rule I never use supermarket fuel but just thought I'd try it as seen some good posts recently.
Think I'll just ride over to the shell tomorrow and fill her right up to be on the safe side.
Don't really know why I put it in to be honest, as a rule I never use supermarket fuel but just thought I'd try it as seen some good posts recently.
Think I'll just ride over to the shell tomorrow and fill her right up to be on the safe side.
23 June 2011, 10:08 PM
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It didn't say 'momentum99' on the pump, just 'momentum'. Gotta be the same stuff though surely.
Don't really know why I put it in to be honest, as a rule I never use supermarket fuel but just thought I'd try it as seen some good posts recently.
Think I'll just ride over to the shell tomorrow and fill her right up to be on the safe side.
Don't really know why I put it in to be honest, as a rule I never use supermarket fuel but just thought I'd try it as seen some good posts recently.
Think I'll just ride over to the shell tomorrow and fill her right up to be on the safe side.
23 June 2011, 10:10 PM
#7
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i use both but must admit i use shell more evan though it costs more as well.
i got my de-cat pipe today but theres a hole in it and not sure why buddy.
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
i got my de-cat pipe today but theres a hole in it and not sure why buddy.
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
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23 June 2011, 10:15 PM
#9
i use both but must admit i use shell more evan though it costs more as well.
i got my de-cat pipe today but theres a hole in it and not sure why buddy.
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
i got my de-cat pipe today but theres a hole in it and not sure why buddy.
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
23 June 2011, 10:19 PM
#10
There used to be a thing on tesco's petrol site that said where they sold 99RON as only about 80 or so of their stations have that, the rest have 97.
But i've only ever seen 99RON Momentum in any tesco i've been to and i live in the sticks! (North Wales)
But i've only ever seen 99RON Momentum in any tesco i've been to and i live in the sticks! (North Wales)
23 June 2011, 10:32 PM
#11
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I am good for tesco 99 2 near me. Years ago supermarket fuel was the very basic stuff, no additives that were added in for the main petrol stations. It was okay years ago but as cars have evolved they have had to improve their fuel to stay in the game.
23 June 2011, 11:16 PM
#13
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think what you're thinking about is when the petrol suppliers didn't rinse out the cleaning fluid from the tankers before refilling with fuel. the traces of cleaning fluid caused some cars to cut out and it was just bad luck for the supermarkets because that particular batch of fuel was destined for only them.
24 June 2011, 01:34 AM
#15
Sainsbury's use BP Fuel, and they sell it cheaper than any BP Filling station. 
Tesco 99 runs spot on, I have checked the knock oth the following fuels via an Apexi Power FC and commander.
This was with No Octane booster being added.
Esso 97 RON 65 Knock
BP 97 RON 35 Knock
Sainsburys 97 RON 35 Knock
Tesco 97 27 Knock
This is adding a cannister of Regular CVL octane booster to a tank
ESSO 97 RON 45 Knock
BP 97 RON 21 Knock
Sainsburys 97 RON 21 Knock
Tesco 97 RON 17 Knock
This is adding a cannister of CVL TURBO octane booster to a tank
Esso 97 RON 32 Knock
BP 97 RON 9 Knock
Sainsburys 97 RON 9 Knock
Tesco 97 RON 6 Knock
the following was not in my car, but i witnessed the knock levels also on an Apexi
Tesco 99 RON with No Octane Booster 11 Knock Not Tested with any octan booster.
The last tst result i do not consider to be Accurate, as different engines may recieve different levels of Knock, which could be for a whole number of reasons.
But it does give a clear indication of how various fuels will behave in your car.
The Above test's were Carried out in Barnstaple N.Devon, on my RA before fitting a Simtek ECU.
every Subaru i know of that has used the ESSO Fuel in Barnstaple ends up with a Missfire that goes away when you refill at another fuel station... This is not good, I think ESSO watter down the petrol more than reccomended.
however all the other fuels are perfectly good in fact, their is a clear indication that the level of Knock is down considerably when using Tesco Petrol.
I have no Shell close hence this not being tested.
Having done the test above, I will always fill up with Tesco 99, and on advice of others Optimax 99.
I will also consider using BP if desperate, no chance will i use ESSO again.
Of course the above exercise only gives an indication on the knock level of the engine, having lo knock is obviously very Good, but the test does not show any effects that the additives may be doing If any.
Tesco 99 runs spot on, I have checked the knock oth the following fuels via an Apexi Power FC and commander.
This was with No Octane booster being added.
Esso 97 RON 65 Knock
BP 97 RON 35 Knock
Sainsburys 97 RON 35 Knock
Tesco 97 27 Knock
This is adding a cannister of Regular CVL octane booster to a tank
ESSO 97 RON 45 Knock
BP 97 RON 21 Knock
Sainsburys 97 RON 21 Knock
Tesco 97 RON 17 Knock
This is adding a cannister of CVL TURBO octane booster to a tank
Esso 97 RON 32 Knock
BP 97 RON 9 Knock
Sainsburys 97 RON 9 Knock
Tesco 97 RON 6 Knock
the following was not in my car, but i witnessed the knock levels also on an Apexi
Tesco 99 RON with No Octane Booster 11 Knock Not Tested with any octan booster.
The last tst result i do not consider to be Accurate, as different engines may recieve different levels of Knock, which could be for a whole number of reasons.
But it does give a clear indication of how various fuels will behave in your car.
The Above test's were Carried out in Barnstaple N.Devon, on my RA before fitting a Simtek ECU.
every Subaru i know of that has used the ESSO Fuel in Barnstaple ends up with a Missfire that goes away when you refill at another fuel station... This is not good, I think ESSO watter down the petrol more than reccomended.
however all the other fuels are perfectly good in fact, their is a clear indication that the level of Knock is down considerably when using Tesco Petrol.
I have no Shell close hence this not being tested.
Having done the test above, I will always fill up with Tesco 99, and on advice of others Optimax 99.
I will also consider using BP if desperate, no chance will i use ESSO again.
Of course the above exercise only gives an indication on the knock level of the engine, having lo knock is obviously very Good, but the test does not show any effects that the additives may be doing If any.
24 June 2011, 01:45 AM
#17
Tbh local to me and I'm sure at alot of other tesco garages they use to advertise on there pumps as 99 .. But now they have changed over to momentum . .. so alittle confusion as as to what they are sellin as most people will just think it's a name change... But is it ?
24 June 2011, 02:00 AM
#19
Having spoke to One of the Tesco Tanker Drivers, He told me it is just a Branding to identify their fuels. eg. Optimax is also a Branding.
anyway Apologies to the Op for the thread Hijack.
Knock.
Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. The peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive.
Preventing Knock
Detonation can be prevented by any or all of the following techniques:
the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces the proclivity to detonate;
enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder;
reducing peak cylinder pressure by increasing the engine revolutions (e.g., shifting to a lower gear, there is also evidence that knock occurs more easily at low rpm than high regardless of other factors);
increasing mixture turbulence or swirl by increasing engine revolutions or by increasing "squish" turbulence from the combustion chamber design;
decreasing the manifold pressure by reducing the throttle opening; or
reducing the load on the engine.
The Above information was taken from the Link Below, where the Full Article can be read.
http://en.wikipedia.org/wiki/Engine_knocking
anyway Apologies to the Op for the thread Hijack.
Knock.
Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. The peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive.
Preventing Knock
Detonation can be prevented by any or all of the following techniques:
the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces the proclivity to detonate;
enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder;
reducing peak cylinder pressure by increasing the engine revolutions (e.g., shifting to a lower gear, there is also evidence that knock occurs more easily at low rpm than high regardless of other factors);
increasing mixture turbulence or swirl by increasing engine revolutions or by increasing "squish" turbulence from the combustion chamber design;
decreasing the manifold pressure by reducing the throttle opening; or
reducing the load on the engine.
The Above information was taken from the Link Below, where the Full Article can be read.
http://en.wikipedia.org/wiki/Engine_knocking
24 June 2011, 06:57 AM
#20
i got my de-cat pipe today but theres a hole in it and not sure why buddy.
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
and no before you say it ,it is not the lampba senser hole either its near where the join is for the centre section maybe a hole for a senser for aftermarket ecu set up may be ?????
well anyway needs welding up i don,t need it
24 June 2011, 08:25 AM
#21
Scooby Regular
I use Tesco Momentum99 all the time in my P1. ive never had a problem and its around 4p a litre cheaper than the nearest Shell, which happens to be around 10 miles away.
24 June 2011, 11:33 AM
#22
Having spoke to One of the Tesco Tanker Drivers, He told me it is just a Branding to identify their fuels. eg. Optimax is also a Branding.
anyway Apologies to the Op for the thread Hijack.
Knock.
Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. The peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive.
Preventing Knock
Detonation can be prevented by any or all of the following techniques:
the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces the proclivity to detonate;
enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder;
reducing peak cylinder pressure by increasing the engine revolutions (e.g., shifting to a lower gear, there is also evidence that knock occurs more easily at low rpm than high regardless of other factors);
increasing mixture turbulence or swirl by increasing engine revolutions or by increasing "squish" turbulence from the combustion chamber design;
decreasing the manifold pressure by reducing the throttle opening; or
reducing the load on the engine.
The Above information was taken from the Link Below, where the Full Article can be read.
http://en.wikipedia.org/wiki/Engine_knocking
anyway Apologies to the Op for the thread Hijack.
Knock.
Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. The peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive.
Preventing Knock
Detonation can be prevented by any or all of the following techniques:
the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces the proclivity to detonate;
enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder;
reducing peak cylinder pressure by increasing the engine revolutions (e.g., shifting to a lower gear, there is also evidence that knock occurs more easily at low rpm than high regardless of other factors);
increasing mixture turbulence or swirl by increasing engine revolutions or by increasing "squish" turbulence from the combustion chamber design;
decreasing the manifold pressure by reducing the throttle opening; or
reducing the load on the engine.
The Above information was taken from the Link Below, where the Full Article can be read.
http://en.wikipedia.org/wiki/Engine_knocking
Right i get it, never heard it called knocking before is that an american term?
24 June 2011, 11:41 AM
#23
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Sainsbury's use BP Fuel, and they sell it cheaper than any BP Filling station.
Tesco 99 runs spot on, I have checked the knock oth the following fuels via an Apexi Power FC and commander.
This was with No Octane booster being added.
Esso 97 RON 65 Knock
BP 97 RON 35 Knock
Sainsburys 97 RON 35 Knock
Tesco 97 27 Knock
This is adding a cannister of Regular CVL octane booster to a tank
ESSO 97 RON 45 Knock
BP 97 RON 21 Knock
Sainsburys 97 RON 21 Knock
Tesco 97 RON 17 Knock
This is adding a cannister of CVL TURBO octane booster to a tank
Esso 97 RON 32 Knock
BP 97 RON 9 Knock
Sainsburys 97 RON 9 Knock
Tesco 97 RON 6 Knock
the following was not in my car, but i witnessed the knock levels also on an Apexi
Tesco 99 RON with No Octane Booster 11 Knock Not Tested with any octan booster.
The last tst result i do not consider to be Accurate, as different engines may recieve different levels of Knock, which could be for a whole number of reasons.
But it does give a clear indication of how various fuels will behave in your car.
The Above test's were Carried out in Barnstaple N.Devon, on my RA before fitting a Simtek ECU.
every Subaru i know of that has used the ESSO Fuel in Barnstaple ends up with a Missfire that goes away when you refill at another fuel station... This is not good, I think ESSO watter down the petrol more than reccomended.
however all the other fuels are perfectly good in fact, their is a clear indication that the level of Knock is down considerably when using Tesco Petrol.
I have no Shell close hence this not being tested.
Having done the test above, I will always fill up with Tesco 99, and on advice of others Optimax 99.
I will also consider using BP if desperate, no chance will i use ESSO again.
Of course the above exercise only gives an indication on the knock level of the engine, having lo knock is obviously very Good, but the test does not show any effects that the additives may be doing If any.
Tesco 99 runs spot on, I have checked the knock oth the following fuels via an Apexi Power FC and commander.
This was with No Octane booster being added.
Esso 97 RON 65 Knock
BP 97 RON 35 Knock
Sainsburys 97 RON 35 Knock
Tesco 97 27 Knock
This is adding a cannister of Regular CVL octane booster to a tank
ESSO 97 RON 45 Knock
BP 97 RON 21 Knock
Sainsburys 97 RON 21 Knock
Tesco 97 RON 17 Knock
This is adding a cannister of CVL TURBO octane booster to a tank
Esso 97 RON 32 Knock
BP 97 RON 9 Knock
Sainsburys 97 RON 9 Knock
Tesco 97 RON 6 Knock
the following was not in my car, but i witnessed the knock levels also on an Apexi
Tesco 99 RON with No Octane Booster 11 Knock Not Tested with any octan booster.
The last tst result i do not consider to be Accurate, as different engines may recieve different levels of Knock, which could be for a whole number of reasons.
But it does give a clear indication of how various fuels will behave in your car.
The Above test's were Carried out in Barnstaple N.Devon, on my RA before fitting a Simtek ECU.
every Subaru i know of that has used the ESSO Fuel in Barnstaple ends up with a Missfire that goes away when you refill at another fuel station... This is not good, I think ESSO watter down the petrol more than reccomended.
however all the other fuels are perfectly good in fact, their is a clear indication that the level of Knock is down considerably when using Tesco Petrol.
I have no Shell close hence this not being tested.
Having done the test above, I will always fill up with Tesco 99, and on advice of others Optimax 99.
I will also consider using BP if desperate, no chance will i use ESSO again.
Of course the above exercise only gives an indication on the knock level of the engine, having lo knock is obviously very Good, but the test does not show any effects that the additives may be doing If any.
When I had my last Impreza I ran it for several months on Tesco 99 with no issue what so ever. The "cars cutting out and killing engines" thing was a bit sensationalised in the press but was basically just something left in a batch of fuel destined for supermarkets - cleaner for the tanks I believe. No issues reported since then.
I eventually moved to Shell (cos it's closer) and ran the Scoob on V-power. No mpg difference, just got club points and a voucher every 3 months (shop at Asda so no Tesco's club card back then).
Currently running my Luftpanzarwagen on normal Shell, as again being a thirty hair armpitted German beast, she gets me lots of V-power club points
When I get another Scoob, I'll see what the price difference between Tesco and Shell is on their 99ron fuels and weigh it up then. Saying that a UK classic can safely be run on the normal 95ron fuel with no concerns unless remapped afterwards
24 June 2011, 11:43 AM
#24
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24 June 2011, 02:24 PM
#28
The new UK STi when fitted with the upgrade will have a sticker inside the fuel filler telling you what to use. Even Porsche's use 96RON unless stated other wise.
Read your user manuel and do what it says in there.
24 June 2011, 02:36 PM
#29
I use Momentum 99 in my Type R, it was mapped on Esso Super Unleaded but in all fairness, I've been really impressed with Momentum.
When Tesco used to sell just the 'Super Unleaded' the RON would differ from station to station, my local Tesco was 97 RON, yet one in a near by town was 99 RON, I'm not sure it's the same with Momentum though.
When Tesco used to sell just the 'Super Unleaded' the RON would differ from station to station, my local Tesco was 97 RON, yet one in a near by town was 99 RON, I'm not sure it's the same with Momentum though.