I asked this fascinating question a few weeks ago - and it was so interesting that absolutely no-one responded !!

Anyway - anyone know if the "performance" diesel is worth the extra cost ??

Super-Diesel?

I must have missed something.

Please enlighten me.  2008 Freelander 2 HSE TD4 Automatic, Caspian Blue, Alpaca, Moon roof, Exclusive pack.

A friend of mine recommends using the Sh*ll Diesel as he says he gets better fuel consumption with it. Out with the old (2007 SE)
In with the new (2012 Dynamic with everything). Now also gone.

At the fuel stations in Denmark you can buy standard diesel or "diesel extra" - the difference being about 10% higher price.


I guess it's a higher grade of diesel fuel - plus cleaners, more sulpher to increase combustion.....??

I don't think it does, I used it before and have not noticed any difference in performance or mpg.

It only increase the performance of the garage, cause if they sell alot of it his boss think he's performed well and he may get a free Cadburys Wispa and the boss get a huge pay packet.


On a simular thread....

5th Gear did a review on the petrol "Nitrous" aditives a couple of weeks ago and they fould all of them decrease power output.

You're probably right.

Wh*t C*r tested "performance" petrol a few weeks ago and concluded they were a complete waste of money.


(Please don't mention the boss's huge packet - it might be misunderstood.... )

Jimmy's right - here is the link to the what car survey report http://www.whatcar.com/news-special-report...EL=3217470

This is a copy of information on the practical caravan forum (see us caravanners do come in useful

"Speaking as the UK representative to the CEN fuel standards, it doesn't matter if you swap between the premium and standard diesel fuels, this won't cause any problems to the engine, injector pump or fuel filters.

If you have a new car, with a Euro IV or IV+ engine (owners handbook) then you should notice the biggest improvement.

WhatCar report seems to be technically flawed. The only diesel car they used (VW Golf 1.9 TDI) appears to be from a previous generation (head lamp layout in the picture appears to be from two generations back) - and won't benefit greatly from the new premium fuels.

By testing the different fuels with a car that can't take advantage of the potential, then it's no surprise if you don't see an improvement.

If you run an oldish diesel car - then aside from the reduction in smoke - there will be little improvement. But if you run a newish car - then the difference is noticeable.

Hope this is of interest to you Jimmy - regards

Grimbo wrote:

If you have a new car, with a Euro IV or IV+ engine (owners handbook) then you should notice the biggest improvement.

By testing the different fuels with a car that can't take advantage of the potential, then it's no surprise if you don't see an improvement.

If you run an oldish diesel car - then aside from the reduction in smoke - there will be little improvement. But if you run a newish car - then the difference is noticeable.

Hope this is of interest to you Jimmy - regards

Why do big oil companies sell those "superior" diesel ?

In most countries fuel prices differ considerably. (Spain is one of the few exceptions, in for instance France you pay most if you fill up at stations with the biggest turn-over: indeed on motorways -buth that's another issue).
With the high actual fuel prices, the price difference per tank becomes higher too. So people start to wonder why they should pay more for the same product. It is all fuel isn't it ?
So the marketeers found the solution: convince your customer that your product is better that the competitors one and he/she will be prepared to pay more. Difficult task of course as they tried that in the past so often.
Plan B: "super" diesel. Even better ! And the advantage is bigger as you buy more of it too !

It is clear there is indeed a big advantage: for the oil companies I mean.
Always the result of the same marketing philosophy: "How to seperate the customer from his money ?"

Last edited by Paul on 2nd Nov 2007 5:50 pm. Edited 1 time in total

Paul wrote:

Why do big oil companies sell those "superior" diesel ?

In most countries fuel prices differ considerably. (Spain is one of the few exceptions: prices are more or less the same anywhere. In for instance France you pay most if you fill up at stations with the biggest turn-over: indeed on motorways -buth that's another issue).
With the high actual fuel prices, the price difference per tank becomes higher too. So people start to wonder why they should pay more for the same product. It is all fuel isn't it ?
So the marketeers found the solution: convince your customer that your product is better that the competitors one and he/she will be prepared to pay more. Difficult task of course as they tried that in the past so often.
Plan B: "super" diesel. Even better ! And the advantage is bigger as you buy more of it too !

It is clear there is indeed a big advantage: for the oil companies I mean.
Always the result of the same marketing philosophy: "How to seperate the customer from his money ?"

The only time I have used "superdiesel" was when the local BP place was promoting it at no extra charge - I didn't notice any difference whatsoever even after 5-6 tankfuls in my then 1 year old car. I reckon it falls into the same category as snake oil, a means of getting folks to part with more money under the illusion that it MIGHT enhance the performance of their car's engine. How can carbon have a footprint, it has no feet?
Now driving - RRE Coupe Dynamic Lux Auto with Plus pack, Fuji White, Ebony, SD4 with tow pack
Gone - 2010MY FFRR TDv8 Stornoway and Ivory, Privacy - the pace of a TDv8 RRS, the incomparable grace of a Range Rover
Gone but will be missed- RRS Tdv8 HSE Stornoway Grey with Ebony Leather
Gone (only a little missed) RRS Tdv6 2.7SE Giverny Green/Aspen
Defender 90 County HT in Epsom Green

I will be the perfect customer for Super diesel then as my Dad once sold me a pot of 'Elbow Grease' ( i was only 9...honest)

Quote:

It is clear there is indeed a big advantage: for the oil companies I mean.

Oil companies only make about 15 pence per litre sold, about another 15p goes to the garage that sells it, and in this country the rest is made up of fuel tax and VAT

Don't be too quick to knock the oil companies, they don't set the price. THE GOVERNMENT DOES  ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

In Australia diesel is more expensive than what you pay for petrol compared to the rest of the world,use to be cheaper in the early eighties as dad had a diesel,then the price went up and up and overtook the petrol price.
The oil companies are ripping us off as its cheaper to make,there is a strong lobby here to keep the petrol price down but no strong voice about diesel,it might all change as diesel is slowly becoming more popular but there are issues about the state of the pumps and getting your hands covered in smelly oily diesel.