Warning POSSIBLE Tesco 99 Poor fuel problem
Discussion
TheEnd said:
Andyuk911 said:
johnfelstead said:
When you go up an octane number, you are slowing down the burn speed of the fuel, so if you have an old car that cant actively manage the engine, going up an octane value can make the combustion process slow down, which gives you less power. Thats why on an old points based disy car, to gain a benefit from higher octane fuel you have to alter the distributor timing to advance the ignition more.
You are really showing up how little you understand about fuel.Equally many people think high octane is a measure of the power or energy in fuel. It isn't.
balls-out said:
TheEnd said:
Andyuk911 said:
johnfelstead said:
When you go up an octane number, you are slowing down the burn speed of the fuel, so if you have an old car that cant actively manage the engine, going up an octane value can make the combustion process slow down, which gives you less power. Thats why on an old points based disy car, to gain a benefit from higher octane fuel you have to alter the distributor timing to advance the ignition more.
You are really showing up how little you understand about fuel.Equally many people think high octane is a measure of the power or energy in fuel. It isn't.
That's how you can make high octane fuel out of normal fuel by adding a bottle of snake oil.
This is the worst "I'm cleverer than everyone in the world" thread ever.
Perhaps the OP thinks the point of pistonheads is to simply post up your gospel facts, and has been surprised by people failing to agree with him, and is now wondering why people don't like his s
tty dismissive attitude.
Anyway everyone, stop arguing with the fuel scientist please and go back to your respective jobs at McDonalds.
Perhaps the OP thinks the point of pistonheads is to simply post up your gospel facts, and has been surprised by people failing to agree with him, and is now wondering why people don't like his s
tty dismissive attitude.Anyway everyone, stop arguing with the fuel scientist please and go back to your respective jobs at McDonalds.
Andyuk911 said:
ZeeTacoe said:
which sad puts super unleaded in a poverty spec car?
You are obviously don't understand about modern cars, PLEASE don't use fowl language, it is NOT necessary. puts super unleaded in a poverty spec car?Seriously it is a boggo standard city car.Renault aren't going to spend vast sums of cash giving it moar boost for when you've filled it up with 99 and have just spotted a shoe sale in NEXT.
Plus I was talking about the other
putting £11 of 99 in his Alto , so take that chip off your shoulder.
ZeeTacoe said:
Andyuk911 said:
ZeeTacoe said:
which sad puts super unleaded in a poverty spec car?
You are obviously don't understand about modern cars, PLEASE don't use fowl language, it is NOT necessary. puts super unleaded in a poverty spec car?Seriously it is a boggo standard city car.Renault aren't going to spend vast sums of cash giving it moar boost for when you've filled it up with 99 and have just spotted a shoe sale in NEXT.
MSTRBKR said:
Without wishing to become a bore (because I asked yesterday), how is the car now with new fuel in?
It's only done a few miles on the new tank, but so far the tickover has returned to normal and not fluctuating up and down .... need to test a motorway run to confirm no limp mode ... Andyuk911 said:
MSTRBKR said:
Without wishing to become a bore (because I asked yesterday), how is the car now with new fuel in?
It's only done a few miles on the new tank, but so far the tickover has returned to normal and not fluctuating up and down .... need to test a motorway run to confirm no limp mode ... 
softtop said:
Andyuk911 said:
MSTRBKR said:
Without wishing to become a bore (because I asked yesterday), how is the car now with new fuel in?
It's only done a few miles on the new tank, but so far the tickover has returned to normal and not fluctuating up and down .... need to test a motorway run to confirm no limp mode ... 
I've just had the same problem with this fuel in my MY00 Honda S2000. The car appears to be in limp mode, wont go into Vtec and generally feels like it has a clogged injector - all after adding this fuel in my car.
I've never previously had a problem, but something is not right with my car after adding this fuel.
I'll be making a complaint to Tesco's just for the record, but I wont be using this fuel again - ever!
I've never previously had a problem, but something is not right with my car after adding this fuel.
I'll be making a complaint to Tesco's just for the record, but I wont be using this fuel again - ever!
Have I really been right both times about supermarket fuel? ttp://www.pistonheads.com/gassing/topic.asp?h=0&am...
To all the nay sayers where all fuel is the same,
Not fecking likely.
To all the nay sayers where all fuel is the same,
Not fecking likely.
doodlebug said:
Have I really been right both times about supermarket fuel? ttp://www.pistonheads.com/gassing/topic.asp?h=0&am...
To all the nay sayers where all fuel is the same,
Not fecking likely.
Fuel is most definitely not 'all the same'. Or, more accurately, it's not the same as it used to be.To all the nay sayers where all fuel is the same,
Not fecking likely.
Pinning the tail on the supermarket donkey isn't entirely appropriate though: they don't make their own petrol... Tesco is actually one of the more proactive players dealing with fuel quality problems, they were also a pioneer introducing biofuel blends.
Take a look at this from the Department for Transport. (PDF file)
DfT said:
Total sales of biofuels in the UK in 2008 were 1,092 million litres, whilst total road fuel sales were approximately 48,395 million litres. As a percentage of total road transport fuel sales, biofuels made up some 2.26% by volume (or some 2.04% by energy content).This represents an increase of more than double the previous year's total sales which amounted to 499 million litres.
Which is the mandated annual response to this from the EU, Directive 2003/30/EC of the European Parliament. (PDF file)Directive 2003/30/EC said:
Greater use of biofuels for transport forms a part of the package of measures needed to comply with the Kyoto Protocol, and of any policy package to meet further commitments in this respect.
A reference value for these targets shall be 5,75 %, calculated on the basis of energy content, of all petrol and diesel for transport purposes placed on their markets by 31 December 2010.
A reference value for these targets shall be 5,75 %, calculated on the basis of energy content, of all petrol and diesel for transport purposes placed on their markets by 31 December 2010.
Andyuk911 said:
Just a heads up but I am 99% sure Tesco have a problem with the 99 Fuel.
I filled the wife's 2008 Renault 1.2 TCE from almost empty, and after 20 miles the car went into limp mode.
I have had it checked, and no faults are found.
Car is now running rough on tickover and lacks power, I assume the ECU has backed everything off.
I am certain the problem is the Super unleaded bought from Tesco Sidcup and no faults with the car.
Since 2 years I only use Optimax (which is 95 over here). Shells new Fuel Save sh@te refuses my car to warm start. Overall octane 98 is ditched in favour of 'regular' 95 . . . not good for my carbed 1.3 and I can only find Gulf Super 98 - or brandless pumps, which I don't trust due to obvious reasons - with the favoured Octane nr. I filled the wife's 2008 Renault 1.2 TCE from almost empty, and after 20 miles the car went into limp mode.
I have had it checked, and no faults are found.
Car is now running rough on tickover and lacks power, I assume the ECU has backed everything off.
I am certain the problem is the Super unleaded bought from Tesco Sidcup and no faults with the car.
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