Drive a Zafira 1.6? Get 7 more mpg!

I put some of this in my car on saturday and it actually made it run worse than before! All lumpy and spluttery on a cold start! (87 Golf GTi) Its normally spot on on "normal" juice!

I won't be paying for it again! Even if I do allegedly get more MPG.
 
this is slightly off topic but, does anyone know who supplies what supermarkets with fuel? as im sure asda dont have there own rigs and refinerys lol

either way ives been told sainsburys is bp. which makes sense with the whole nectar thing, but i might be wrong

Basically all petrol stations get their fuel from the nearest refinery. All fuel the lorries are subcontracted out, so you may fine Shell/BP lorries filling up tesco petrol stations, but that doesn't mean the fuel came from a Shell/BP refinery. There are very strict regulations regarding the quality of petrol and the only difference between different brands being the additives put in.

In summary the main/only difference between fuel brands is the (quality of) additive put in. However, there is a net fuel agreement between companies to supply any company who has a fuel shortage, so you may find from time to time that BP/Shell etc supply fuel with their additives in to Tesco/Asda etc.
 
I put some of this in my car on saturday and it actually made it run worse than before! All lumpy and spluttery on a cold start! (87 Golf GTi) Its normally spot on on "normal" juice!

I won't be paying for it again! Even if I do allegedly get more MPG.

Lack of knock sensor means the fundamental difference for you is it's harder to ignite and cleans your injection system better.

Probably a sign that your plugs are getting tired.
 
Lack of knock sensor means the fundamental difference for you is it's harder to ignite and cleans your injection system better.

Probably a sign that your plugs are getting tired.

Ah cheers bud :D

OT ;)

So it has beneficial effect on my injection system? If replace the spark plugs then it should sort out the lumpy starts right?
 
[TW]Fox;17219728 said:
Why would ANYONE ever take a car to this place to get any work done after reading such a shocking peice of research?

Someone who reads it and takes it at face value without realising that it's complete BS. Quite a lot of people aren't educated in the ways of science and could easily get taken in.
 
It's clearly marketing spiel and they have deliberately distorted the figures to show exactly what they want. 99% of people who see that graph wont analyse it in the same way which members on here have.

Saying that, I have been using Tesco 99 RON fuel for the past 6-8 months and it has definitely improved my mpg.... slightly. We're talking maybe +2 mpg. That's in a Clio 182 which is right on the cusp of making use of the higher octane.
 
[TW]Fox;17219728 said:
Why would ANYONE ever take a car to this place to get any work done after reading such a shocking peice of research?
What research? :confused:

Shouldn't someone be contacting Trading Standards over this tripe?
 
Basically all petrol stations get their fuel from the nearest refinery. All fuel the lorries are subcontracted out, so you may fine Shell/BP lorries filling up tesco petrol stations, but that doesn't mean the fuel came from a Shell/BP refinery. There are very strict regulations regarding the quality of petrol and the only difference between different brands being the additives put in.

In summary the main/only difference between fuel brands is the (quality of) additive put in. However, there is a net fuel agreement between companies to supply any company who has a fuel shortage, so you may find from time to time that BP/Shell etc supply fuel with their additives in to Tesco/Asda etc.

So basically supermarket bramds are a mishmash of brands

Branded fuel is more likely to be of one type in the tank?
 
I get much better MPG on SUL than I do on regular NUL.

My VXR was even more sensitive than the ST, where I'd consistently get 1-2 MPG more on average from V-Power than T99.
 
I keep hearing adverts on Heart London for this - they're directing people to the webpage to read about it so they're certainly trying to get the word out there!
 
our local station has a radio advert for it too.

They seem utterly unfazed by the unscientific nature of the research and are going all guns blazing in promoting it.

not sure what came first, shells "fuel save unleaded 95" or Tescos rebranding of Ultra 99 to Momentum 99.
 
I'm not sure what's unscientific about it, other than the fact that anyone can work it out. A fuel with more energy will get you further per gallon than another fuel with less energy.
 
Jesus that is worrying!

I wonder will they try to bring this to Ireland. It could be a great marketing strategy for them as people are generally even less educated about cars, and you can only get standard 95RON here anyway..
 
I'm not sure what's unscientific about it, other than the fact that anyone can work it out.

Are you joking? The lack of accuracy in measuring the total ammount of fuel used makes the results worthless, added to the fact that though they claim later that the tests were done blind the published testing methodolgy completely contradicts this. I'm seriously shocked that Tesco would have anything to do with the cowboys at Thorney and have actually advertised these "results".

I've sent a complaint to the ASA and would hope other will do the same.

As an aside previous Tesco 99 actually had less energy density than their normal unleaded but could offer increased mpg in some cases due to the higher RON. In fact they make no claims that the "new" fuel has higher energy density.
 
Because theory is clear on what is possible, I mean I've experienced the results myself, but perhaps the literature they advertise is what they believe to be more consumer friendly. This isn't just T99/Momentum, but any SUL.
 
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