2004 C230 just filled up with sainsburys petrol mpg plummet!

lordrobs said:
Doesn't Sainsbury's have a deal with BP for them to supply all their fuel?
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this has been discussed before

1) supermarkets usually do have a "usual" supplier yes. But this supplier doesnt have an exclusive deal. If that supplier is short or whatever, they'll get it from somewhere else. You can never guarantee whats in a supermarket forecourt

2) allthough its supplied by the big name, its made to order for the supermarket, and they skimp on anything they can. Normal forecourt petrol normally has more cleaning aditives and detergents etc.. Supermarket fuel wont have any of these.
 
MrLOL said:
2) allthough its supplied by the big name, its made to order for the supermarket, and they skimp on anything they can. Normal forecourt petrol normally has more cleaning aditives and detergents etc.. Supermarket fuel wont have any of these.
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any factual basis for this claim as I simply don't believe it?
 
lordrobs said:
Doesn't Sainsbury's have a deal with BP for them to supply all their fuel?

I avoid the supermarkets that use Greenergy or whatever they are called but happily fill up at Sainsburys.
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Sainsburys and Tesco both use Greenergy. They supply Tesco with 99 ron ULSP.

Greenergy were the first to introduce ULSD in the UK which was sold at Sainsburys and Tesco first, before national rollout a number of years ago if I remember correctly.

Tesco is a shareholder in Greenergy Fuels, Ltd.
 
I went from V-Power to sainbury's super unleaded for a few weeks to try it as it was a damn sight cheaper just to see if it was the same. Didn't think I could see any difference between the two until I went back to V-Power, idled a lot better (as good as a 172 engine will) and cold start driving was far improved and my constant low 30s mpg went back up to its usual 35-37mpg.

So will be sticking with vpower for a while yet.
 
I use Sainsburys Super Unleaded (97 Ron) and get around 20-22mpg on my cold start 5 mile trips. I don't really have an awful lot of choice becuase there isnt a Shell garage for 20 miles - poor for a city of 250,000 people really.

This means i probably only have 230bhp instead of 231bhp :(
 
Down here we have a petrol station company called united.
I dont know what they do to there petrol but if i use it the car drinks it like a fish.

It worth driving over a few towns to Shell and get optimax when ever i can just because it will last so much longer:)
 
Clarkey said:
any factual basis for this claim as I simply don't believe it?
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Look at simons quote below

Everybody's who'se ever posted who knows anything about the petroleum industry has said the same thing

the petrol used by the supermarkets is obtained as cheaply as possible. Given that supermarkets are always the cheapest without fault, it stands to reason the fuel they order from BP or whatever will be discounted if BP do less work to it.

By less work, i mean not purifying it and not adding cleaning detergents etc..

Look at the morrisons petrol scare for example. Supermarket fuel is cheap. And you get what you pay for.

monkeyspank said:
I seem to get a bit further on a tank of BP or Shell than Tesco stuff. 95 ron. It could be all in my mind though!
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ive never read anything that could explain that. All ive ever read is that the supermarkets get it cheaper by having less aditivies in it.

Ive also read they get it cheaper for it being less filtered. One petroleum industry workers explained that supermarket petrol will have higher silicion(sand) deposits. At the time, i dismissed this as rubbish. Then the morrisons scare happened. And sure enough it was sillicon deposits. And i read the post on scoobynet years before the morrisons scare happened so it was completely true.
 
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[TW]Fox;11416086 said:
Sainsburys is the same price as Shell, often a penny more?
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tbh the supermarkets have admitted they use as many as 10 different suppliers depending upon whats available locally and and at what price. For example, the Tesco part biofuel 99 RON fuel is largely only available down south

Your location has an influence on where your petrol comes from and what quality it is.

Also, Currently Sainsburys in Leeds is charging 103.9 which is about 2p cheaper than the Esso and Bp stations round here, further adding fuel to the locational variation argument.

But at the end of the day, its rare for petrol to be so bad it would do damage. Its all controlled at the end of the day so it shouldnt be at such a standard that it damages anything

And look at the morrisons case, if it does they get smacked down.
 
Must be very localised, currently Shell and Sainsburys are the same price. BP round here is artificially bumped up due to 3p off per litre vouchers in the local papers. Tesco and Total is 1p per litre more than the rest.
 
Here shell is the cheapest out of esso, shell and sainsburys.

If the supermarkets do get lower grade fuel and mix in their own additives, where does this mixing occur? From what I'd assume the fuel comes from the depot to the forecourt, not to some midway tesco fuel mixing plant?
 
Psycrow said:
Here shell is the cheapest out of esso, shell and sainsburys.

If the supermarkets do get lower grade fuel and mix in their own additives, where does this mixing occur? From what I'd assume the fuel comes from the depot to the forecourt, not to some midway tesco fuel mixing plant?
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from what i understand (simon will prob. know more) the aditives are added (or not added) at the depot depending upon where its going.

The raw petrol is the same, we're not claiming they use different fuel or anything. Just that corners are cut.
 
MrLOL said:
from what i understand (simon will prob. know more) the aditives are added (or not added) at the depot depending upon where its going.

The raw petrol is the same, we're not claiming they use different fuel or anything. Just that corners are cut.
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Spot on
 
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