Supermarket fuel V's Petrol station fuel.

Supermarket fuel V's Petrol station fuel.

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Discussion

slowly slowly

Original Poster:

2,474 posts

237 months

Saturday 18th November 2006
quotequote all
I know this has been mentioned before but is there anyone on here that as done a proper comparison. About 6 months ago I filled up with ESSO unleaded from a petrol station, drove careful and got 48.7mpg out of my Toyota Pasio (60-65mph).
Today I went from empty to full with Tesco super unleaded, did 133 miles and then put 13.91 ltrs of BP ultimate in, I get that to 43.4mpg, so I paid 7% more and got 10% worse, I now have to use most of this up before I test a full tank of petrol station super unleaded.
Am I wasting my time, has anyone else done a proper comparison with these fuels.

timmy33

9,325 posts

240 months

Saturday 18th November 2006
quotequote all
To do a proper test you need to put a car on a rig, drain the tank, and run the car to empty using the same rev range for each fuel test, in the same conditions, same temp etc.

Howitzer

2,861 posts

229 months

Saturday 18th November 2006
quotequote all
On Tesco 99 I always seem to get about 50km less to a tank (400km instead of about 450) when compared to V-Power, which is quite a difference. I don't feel any difference between the two though.

Dave!

remal

25,030 posts

247 months

Saturday 18th November 2006
quotequote all
not really but heard soo many bad things about supermarket fuels unless i am about to run out I always turn to fill up either at a local BP, Shell etc...

my grandfather filled up at a local well known supermarket a few years ago and get Unleaded when it said Diesel fuel. and not a mistake on his part. and not bloody funny at the time

KirstM

2,376 posts

249 months

Saturday 18th November 2006
quotequote all
our cossie didn't pink on petrol station stuff but did on Morrisons

tvrgit

8,479 posts

265 months

Saturday 18th November 2006
quotequote all
Haven't done a proper comparison, but in the Saab (diesel) I get just over 40mpg - I started to notice that the range on branded fuel is about 500 miles, and on supermarket diesel, about 460-470.

In the last few weeks I've used two consecutive full tanks of supermarket fuel and you can see the trip computer drop - then two full tanks of branded fuel and it goes up again.

I'm also sure that the branded fuel makes the car run better.

Of course this might all be imagination...

rick.e

768 posts

284 months

Saturday 18th November 2006
quotequote all
The most extensive back to back test I have seen was published on our very own PH a few montsh back:

www.pistonheads.com/news/default.asp?storyId=14919

and showed Tesco 99 to be the best.

Remember that there are other things to take into account in doing your own comparison. Petrol has a higher calorific value per gallon at cold temperatures for example. Also, petrol engines produce slightly more power in damp conditions.

danhay

7,489 posts

269 months

Saturday 18th November 2006
quotequote all
If you think the supermarkets have their own refining and distribution channels then you are very much mistaken. The stuff the supermarkets sell is the same as the what you buy at branded oil companies pumps.

However, that doesn't mean that all fuels are the same.

It would be good to find out what goes into whose pumps?

slowly slowly

Original Poster:

2,474 posts

237 months

Saturday 18th November 2006
quotequote all
I think you know when you are driving economically, when I got 48.7 I felt that I could have got over 50, today I thought I had definitely got over 50, but don't forget I put super in so something made a difference.
The car is only worth £1500, may be the engine is past its prime, where is that Autotrader mag?.

mcflurry

9,168 posts

266 months

Saturday 18th November 2006
quotequote all
KirstM said:
our cossie didn't pink on petrol station stuff but did on Morrisons


Sainsburys use BP fuel

D_T_W

2,502 posts

228 months

Saturday 18th November 2006
quotequote all
I've typically run mine on diesel from either BP or Shell, the fuel tends to be the same price round here no matter where you go. I did try BP Ultimate diesel once, tank range dropped by over 100 miles with the same driving.

I usually only fill up from Tesco if i have a 5p/litre off voucher, otherwise its branded filling stations.

Though changing from 16 to 18 inch wheels has dropped the range and average fuel economy so much i can't tell the difference between different fuels anymore

condor

8,837 posts

261 months

Saturday 18th November 2006
quotequote all
It might be something to do with the tolerance on the pumps - about 30 years ago it was 0 to +2% a pump could be out - then it changed to + or - 2%. No idea what it is now, but wiuld hazard a guess that the supermarkets would use legal tolerances to their advantage.

Witchfinder

6,250 posts

265 months

Monday 20th November 2006
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My Mondeo (and the Octavia before it) hated Shell fuel - regular, Optimax (for the Skoda) and V-Power (for the Mondeo). I just can't explain it.

Both cars love BP regular, and the Skud would be even happier on Ultimate. It doesn't make a difference in the Mondeo though.

I've tried various supermarket fuels, and found my cars ran even worse than on Shell stuff. Fortunately there's a BP garage 5 minutes down the road, and it's the cheapest in the area too (83.9/litre)

vixpy1

42,685 posts

277 months

Monday 20th November 2006
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Vpower is streets ahead of other fuels, Tesco99 second..

But the TVR seems to love Sainsbury's super for some reason

mdm123

372 posts

277 months

Monday 20th November 2006
quotequote all
it alright saying which is best, but 9 times out of 10 the it doesnt mater. what does matter is how long the fuels been lying in the tank. since supermarket petrol stations tend to be busier the petrol's fresher.

egomeister

7,101 posts

276 months

Monday 20th November 2006
quotequote all
Totally subjective but I find my Clio 182 likes V-Power, but seems a bit lifeless when fueled with Tesco 99. BP ultimate and sainsburys super seem to lie somewhere between the two.

grayme

936 posts

249 months

Monday 20th November 2006
quotequote all
danhay said:
If you think the supermarkets have their own refining and distribution channels then you are very much mistaken. The stuff the supermarkets sell is the same as the what you buy at branded oil companies pumps.

However, that doesn't mean that all fuels are the same.

It would be good to find out what goes into whose pumps?


When I worked at a Tesco PFS we were told (though I never checked) that only the biggies had their own refineries, Esso, shell, etc, all others came from shared refineries. One differencewas that Tesco (at the time at least) used to get the additives added on the tanker to mix in there rather than at the refinery.

Still, my Rover plinked on it so after selling the stuff I would fill up across the road as Esso.

Running a Focus TDCi I don't mind where I fill up (until someone later in this thread has some facts that change my mind )

phil24

65 posts

261 months

Monday 20th November 2006
quotequote all
grayme said:
danhay said:
If you think the supermarkets have their own refining and distribution channels then you are very much mistaken. The stuff the supermarkets sell is the same as the what you buy at branded oil companies pumps.

However, that doesn't mean that all fuels are the same.

It would be good to find out what goes into whose pumps?


When I worked at a Tesco PFS we were told (though I never checked) that only the biggies had their own refineries, Esso, shell, etc, all others came from shared refineries. One differencewas that Tesco (at the time at least) used to get the additives added on the tanker to mix in there rather than at the refinery.

Still, my Rover plinked on it so after selling the stuff I would fill up across the road as Esso.

Running a Focus TDCi I don't mind where I fill up (until someone later in this thread has some facts that change my mind )


As you rightly say there are only a handfull of refineries in the uk the rest of the distribution points have the fuel shipped or piped to them, www.linewatch.co.uk/network.htm the fuel is all basically the same just different additives used for different companies. The only exception i think is V-Power which is actually a refined specifically for shell.

As for testing against differnt brands there are too many variables to take into account to do it on the road. for example the colder it is the better in terms of filling up but i would hazard a guess that if the weather is warmer your car would get more miles to the gallon.

warren182

1,091 posts

223 months

Monday 20th November 2006
quotequote all
egomeister said:
Totally subjective but I find my Clio 182 likes V-Power, but seems a bit lifeless when fueled with Tesco 99. BP ultimate and sainsburys super seem to lie somewhere between the two.



Yep, I find the same, runs better on standard shell than tesco99.

eccles

13,919 posts

235 months

Monday 20th November 2006
quotequote all
i'd like to see a definitive answer, with proof, on what goes into supermarket tanks.
this question keeps coming up, but i've yet to see an answer where someone doesn't contradict it in the next post... scratchchin

there seem to be three basic answers...
1. the fuel is exactly the same as branded ones

2. its the same but with different additives

3. its the crud that's not as good as the branded fuel.


i always thought it was much the same stuff, but my octavia diesel seems to get 650-680 out of a tank of shell,(and seems to have a bit more get up and go), but on tescos/asda or sainsburys it only gets 600-630 out of a tank.