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Diesel - Supermarket or Brand - terrierman

Is there really any difference in diesel from supermarkets or Shell etc.

Some posters think so, or does it all come from the same refineries?

Diesel - Supermarket or Brand - craig-pd130

All diesel sold in the UK has to meet the EN590 standard so it all should meet has the basic cetane level (51) and lubricity standards etc.

Different brands will add different additive packages which may or may not offer benefits.

Over the years I have tried pretty much everything in my Passat PD130 and new Mondeo 2.0 TDCi, from Shell Diesel Extra, V-Power, BP Ultimate, Esso Energy, to supermarket fuel.

Also additives including Stanadyne, Millers and a super Cerium-based catalyst and ....... none made ANY measurable difference to performance or economy. Certainly no difference that couldn't be explained by ambient temps or driving mix.

Sure, I **thought** I felt a difference in performance or throttle response or smoothness, but the calculator and stopwatch said no.

Now I just use whichever fuel is cheapest (Shell or Tesco, if I had a 5p- off voucher) and give the car a weekly blast through the gears to clear the soot :)

Diesel - Supermarket or Brand - a900ss

This has been covered many times but in my Subaru Legacy, it feels slightly smoother but that may be become I hope it is going to be. I don't notice any extra MPG.

What is certainly evident though is that the car smokes considerably less under acceleration. The Leggy diesel is a bit of a smoker for a modern diesel and using branded fuel makes it considerably less so compared to Tesco fuel (I only used Tesco fuel before as it was very local to me).

Good Luck

Diesel - Supermarket or Brand - iFocus

I've noticed my economy is worse on Sainsburys diesel, but better on Asda diesel.... explain that one!

Diesel - Supermarket or Brand - daveyjp

When I had a bunged up EGR valve replaced I was told to avoid supermarket fuel. I now do and around here branded fuel is no more expensive.

Diesel - Supermarket or Brand - galileo

Unless you are prepared to go through the process of buying groceries exclusively at the same supermarket and accumulating the vouchers, in this area Shell is no more than supermarket fuel and often a penny cheaper.

Diesel - Supermarket or Brand - tmjs

I used to buy fuel at Tesco, up until they had an issue with contaminated fuel - http://news.bbc.co.uk/1/hi/uk/6405701.stm

Now I buy my fuel at Shell, it's the nearest to my house and usually the cheapest.

Diesel - Supermarket or Brand - FP

I always buy Shell, but I hasten to add not for any particular reason except that I avoid supermarket stuff and I can get Shell relatively cheaply.

All fuel comes from a limited number of refineries and, as has been said, has to conform to certain standards. (Some might argue those standards are minimal.) The difference between brands is in extra additives used.

I use Miller's as well, but perhaps I'm just being paranoid. However, I've covered over 100,000 miles in my Peugeot 306 HDi without any fuel or engine problems whatsoever.

Diesel - Supermarket or Brand - AlleyCat`

Can't say i've noticed a huge difference between premium brand fuel and the supermarket stuff.

I do mix and match depending on where i am at the time (travel for work).

Price wise the local ASDA is cheaper by an average of 3p a litre on diesel (over branded fuel). The nearest Esso is the most expensive at 8p a litre more.

As to Millers, how does it compare with RedEX (is it even the same sort of deal?)

Diesel - Supermarket or Brand - OldSkoOL

Use shell

Much higher cetane rating which means the fuel ignites easier. When a fuel is essentially more flamible it burns more completely. As oppossed to a supermarket fuel which has no/low amounts of cetane booster (2-EthylHexylNitrate) which has a lower cetane rating, UK spec 51.

When our diesel cars re-circulate exhaust gasses, NOX, this burns cooler in the combustion chamber and the fuel burn's incompletely, forming carbon, soot.

A higher cetane fuel like Shell fuelsave or bp ultimate has a centane of around 56/57. More fuel is therefore ignited at any air/nox mix and leaves less soot.

I'm sure you are aware, carbon in the internals will eventually lead to component failure, the first stop, DPF.

Edited by OldSkoOL on 18/01/2011 at 23:52

Diesel - Supermarket or Brand - bathtub tom

Perhaps OldSkoOl, we'd have more confidence in your posts if they weren't double spaced and contain so many typos? (centane?)

Diesel - Supermarket or Brand - OldSkoOL

Dyslexic Tom

As for spacing, this editor double lines on return.

Edited by OldSkoOL on 21/01/2011 at 09:42

Diesel - Supermarket or Brand - Hamsafar

I avoid supermarket fuel, because once they have closed the independants, they jack up the prices. The fuel itself is sometimes better, sometimes the same sometimes worse. Unless you have local inside knowledge of fuel distribution, then one will have to play it by ear.

Diesel - Supermarket or Brand - mark193

Is there really any difference in diesel from supermarkets or Shell etc.

Some posters think so, or does it all come from the same refineries?

Hi

Spoke to a tanker 'man' the other day and he told me that the supermarket stuff doesn't have detergents in there Petrol/Diesel

Good advice me thinks ?

Mark 193

Diesel - Supermarket or Brand - RT

Spoke to a tanker 'man' the other day and he told me that the supermarket stuff doesn't have detergents in there Petrol/Diesel

Good advice me thinks ?

Mark 193

The reality is that supermarket fuel has a cheaper additive package than the big brands - not a case of NO additives - without them publishing details of their package no-one can every really know - which is how "Urban Myths" evolve.

Diesel - Supermarket or Brand - TDIGuy
Well another additive has aught my attention. It's a uk branded one called Diesel Rhino, and despite the unusual name it seems to be getting very good feedback from a select user group.

Any body heard or tired it ? The company seems to be in its infancy by the looks of things but a diesel fuel injection company endorses it so might take the plunge and test it out.
Diesel - Supermarket or Brand - unthrottled

I've tried it. Clogged up the fuel pump and seized the injectors. Won't buy it again.

Diesel - Supermarket or Brand - TDIGuy
I really find that hard to believe, sounds like you have an agenda.

If it really did that then why has no one else complained ?
Diesel - Supermarket or Brand - unthrottled

Maybe because they're ttill stuck on the hard soulder awaiting recovery?

Agendum? Resurrecting an old thread to plug a product whilst posing as a disinterested user?! Surely not!

Diesel - Supermarket or Brand - Armitage Shanks {p}

All diesel has a package of additives included, fewer in the supermarket fuels allegedly. However, all fuel sold meets the relevant British Standard and is thus fit for purpose to the extent laid down by that standard

Diesel - Supermarket or Brand - RT

All diesel has a package of additives included, fewer in the supermarket fuels allegedly. However, all fuel sold meets the relevant British Standard and is thus fit for purpose to the extent laid down by that standard

As well as a British Standard, it's also a EN European standard.

Diesel - Supermarket or Brand - brum

Notwithstanding TDIguy's possible association to United Diesel Fuel Injection Services Ltd, the firm I believe he is referring to as testimonial and also happens to be the firm who produces the stuff. I did a quick google around and came up with these "facts"

Millers ingredients:

  • 2-ETHYLHEXYL NITRATE 50-70%
  • COMPONENT 72248 30-50%
  • D-LIMONENE <1%

Diesel Rhino ingredients:

  • 2-ETHYLHEXYL NITRATE 40-50%
  • 2-BUTOXYETHANOL 40-50%
  • A MIXTURE OF ISOMERS OF: C7-C9 ALKYL 3-(3,5-DI-TRANS-BUTYL-4-HYDROXYPHENYL)PROPIONATE 1-10%
  • NONYLPHENOL 1-10%
  • ALKYL AMINES, MONOHEXYL AND DIHEXYL PHOSPHATES 1-10%

Shell V-power diesel's make up:

Complex mixture of hydrocarbons consisting of paraffins,
cycloparaffins, aromatic and olefinic hydrocarbons with carbon
numbers predominantly in the C9 to C25 range. May also
contain several additives at <0.1% v/v each. May contain
cetane improver (Ethyl Hexyl Nitrate) at <0.2% v/v.
May contain catalytically cracked oils in which polycyclic
aromatic compounds, mainly 3-ring but some 4- to 6-ring
species are present.


Note that all ETHYLHEXYL NITRATE as the cetane improver - higher cetane that leads to smoother running and for potentially better combustion.

Diesel - Supermarket or Brand - RT

Brum - that's not the full make-up of any of them - they only list hazardous components and the % are in statutory bands, not the exact %.

Diesel - Supermarket or Brand - BigJohnD

I hope you took a sample to Trading Standards and told them where you bought it.

Diesel - Supermarket or Brand - FocusLgd

Interesting topic this. I assumed they would all be the same but will start to check this from now on.

Diesel - Supermarket or Brand - mark999

I used to work for a fuel additives company many years ago, we ran field test vehicles to test the effectiveness of our additives. The additives were really effective at keeping injectors and inlet valves clean.

Mark.

Diesel - Supermarket or Brand - RT

I used to work for a fuel additives company many years ago, we ran field test vehicles to test the effectiveness of our additives. The additives were really effective at keeping injectors and inlet valves clean.

Mark.

And I bet that company now sell those additives to the fuel distributors to put into raw fuel as all brands have some additives, they vary in quantity and type but they all have some.

Diesel - Supermarket or Brand - struie

The father of one of my son's school friends drives a Shell tanker. He says fuel comes out of the same tanks at the refinery or fuel depot be it it for Shell , Asda, Morrisons etc and that he sometimes delivers to supermarkets.

Diesel - Supermarket or Brand - Collos25

I have just watched a tanker deliver petrol to a supermarket while having a breakfast in the cafe connected the pipes up filled the tank and disconnected the pipes took some paperwork into the kiosk and then drove off.If he had any additives he certainly did not put them in the tank and where would he carry them to comply the HS certainly not tin the cab and there is nowhere on the outside of the tanker to store them.

Diesel - Supermarket or Brand - FP

In a conversation I had a few years ago with a chap - I got to know him quite well - who was a driver for BP delivering from the ill-fated Buncefield depot in Hemel Hempstead, he quite clearly told me he had to add stuff to the contents of his tanker.

When it was put in (it could have been just before the tanker was filled) I don't know. Nor do I know if it was the same stuff that was added irrespective of the destination. Nor do I know where the stuff was kept - in/on the tanker or at the BP premises at the depot.

We do of course know that all fuel has some additives - it's not just "raw" petrol or "raw" diesel. The discussion is about what else is added to some fuels and whether it makes any difference.

Edited by FP on 08/04/2013 at 16:05

Diesel - Supermarket or Brand - BigJohnD

In a conversation I had a few years ago with a chap - I got to know him quite well - who was a driver for BP delivering from the ill-fated Buncefield depot in Hemel Hempstead, he quite clearly told me he had to add stuff to the contents of his tanker.

I find that hard to believe.

I used to fill 30,000 litres tankers at the refinery.

Samples of everything that left in the tanker were stored and checked in the event of any complaint. There's no way anything would be added so casually by the driver on arrival at the filling station.

Diesel - Supermarket or Brand - FP

I can only tell it as I heard it.

"There's no way anything would be added so casually by the driver on arrival at the filling station." I didn't say that, and he didn't say that. For all I know, it was all done inside the depot.

Diesel - Supermarket or Brand - skidpan

The chances of letting drivers put the additives in either the depot or filling station is less than zero. The stuff almost certainly contains toxic chemicals plus it will require accurate measuring.

The stuff will be put in without human contact at some point in the supply chain.

Think of the repercussions if insufficient anti-waxing additive was put in during the winter.

Diesel - Supermarket or Brand - Hamsafar

The drivers sometimes added stuff at the depot while loading the tankers (from on top), this stopped in the1980s. Before working at height regs and H&S, they used to climb up a ladder at the back of the tanker and walk around on top, open 6-8 lids, one for each compartments and swing a hose round and fill each compartment as per the order and check level with dipsticks, they could then add red marker dye or whatever too. A few decades ago, it became forbidden to go on top and botto loading was introduced and you will see 8 or so faucets with caps on down one side (these were always there for delivering), but only 1990s- were they used for loading too. As loading has been a closed system for 30 years there is no way for drivers to manually add stuff. Bottom loading has been computeried for 20 years and additives are added from seperate small tanks for each customer at the depot, as you know, rationalisation in the late 1990s saw most depots close and the remaining ones shared bewteen different fuel companies and later supermarkets.

Diesel - Supermarket or Brand - Collos25

Seeing as a large proportion of Diesel fuel is imported as there is not he refining capacity in the UK the quality goood or bad would depend on the refinery were it was refined I suppose.

 

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