no offence to 1-click, but mine was custom mapped for 8 hours on supermarket diesel, so I think the effects (if there are any?) are more emphasised on my setup than a generic remap. (mine's infinitely switchable, by my throttle foot )

If the cetane rating's the same, the performance is the same. FACT!

Detergents will perhaps result in smoother running etc over a long period of time but we are talking a long time, not a couple of tankfuls.

no offence to 1-click, but mine was custom mapped for 8 hours on supermarket diesel, so I think the effects (if there are any?) are more emphasised on my setup than a generic remap. (mine's infinitely switchable, by my throttle foot )

hmmm, got me thinking......

mines got a custom map, and i think it was done with a tank of BP ultimate. Perhaps explains the not sure feeling i get when i press the right foot hard.

I'll be topping up with Ultinate next time to check.

Where's it available from ?

Available on Ebay for not very much money (delivered) or you can pick it up from one of your local stockists, check out milleroils.

I've tried BP Ultimate, Shell Diesel Extra and many different supermarket fuels. The worst I've encountered was our "local" Sainsbury's which made the car run dog rough. Couldn't tell the difference between any of the others and so have settled on Tesco with 5p off a litre and Clubcard points, with the occasional splash of Millers

Do mappers really map based on cetane ratings? I thought that could only be done with petrols where timing could be advanced to take into account octane rating. On a diesel, you just squirt and pray

Chris

Just be aware people, that Millers Diesel Power Plus is currently only for EuroIII engines (and below). It gives a clear message on the back of the bottle about checking your manual to see if your EuroIV engine is compatible with it.

I've always used Millers and bought a new bottle ready for the new car only to read that. I phoned Millers Technical and they told me it wasn't to be used in ANY EuroIV VAG PD's. They're releasing a new product called Millers Diesel Sport4 (I think that's what it was called!) for new EuroIV compliant engines and it's in the final stage of testing. It'll be released shortly...

Also take not that skoda advise not to use any fuel or oil addatives.

Fabia-vrs.com - The Use Of Oil And Fuel Additives

I'm not going to use anything on my new car. I'd already noted Skoda's information on the use of additives and decided I'd best adhere to that with the new one...

Also take not that skoda advise not to use any fuel or oil addatives.

So where does that leave you with BP Ultimate and Shell Diesel Extra which have cetane boosters (or so I hear!) :confused:

Chris

The fuels are EN rated and should conform to a standard in that respect so in theory the additives are in known quantities and the results are supposed to be predictable, therefore in a legal sense SUK can be sure that the use of the fuels won't cause them lots of warranty issues'

No-one can guarentee that any other aftermarket additives will have the same effect and not cause some sort of system contamination or worse.

There is logic in it and they are right to protect their interests on paper.

My personal opinion is that Miller's when used correctly is bloody good stuff that I have never ever used in my Fabia ever. Ever.

Last Time I rang Skoda UK I asked them about Ultimate Deisel and Shell diesel Extra after reading the same bit in the manual

the person on the phone told me it was fine and not to worry about it and it was other additives out of bottles they where not so sure about

anyways next time I ring I'll see what they say about this millars stuff?

Give it ago Will, it's good stuff... (i think it is)

So where does that leave you with BP Ultimate and Shell Diesel Extra which have cetane boosters (or so I hear!) :confused:

Chris

I thought it was just detergents and lubricants :confused:

If it does have an elevated cetane level compared to normal diesel then it will obviously result in higher performance, assuming the Furby's ECU can adapt the timing accordingly.

Does anyone know for sure - then we can kill this issue once and for all...

I thought it was just detergents and lubricants :confused:

If it does have an elevated cetane level compared to normal diesel then it will obviously result in higher performance, assuming the Furby's ECU can adapt the timing accordingly.

I'm not sure it can have cetane boosters, or it wouldn't conform to "standard diesel", much like super unleaded has its own BS number, but I've heard people say it has them. Would be interested to know the answer though....

Will! Get on the phone to BP :P

Chris

BP Ultimate Diesel has the highest cetane number in the UK at a guaranteed 55 minimum and typically higher. Ordinary diesel sold in the UK has a cetane number of 51

So now we need to know does the Furby ECU adapt as we would hope to take advantage of this higher cetane value? If it does not then Ultimate makes you go slower, if it does then you go faster.

Come on techies - let's put this to bed...

A bit of digging on the standard for diesel shows that there is no max cetane rating, just a minimum of 51. So I'm wondering how Skoda can make a sweeping statement about fuel additives not being used, yet encourage use of BP Ultimate where cetane is "a minimum of 55 and typically higher".

Chris

A bit of digging on the standard for diesel shows that there is no max cetane rating, just a minimum of 51. So I'm wondering how Skoda can make a sweeping statement about fuel additives not being used, yet encourage use of BP Ultimate where cetane is "a minimum of 55 and typically higher".

Chris

Because diesel like petrol has to meet certain standards by law so even Ultimate is a known quantity, but i doubt additives have to meet any of these standards.....

Just to side track a little what the cetane rating of Shell Diesel Extra??

How can Ultimate be a known quantity if BP only guarantee it's above 55 and in many cases " is a lot higher"? Sounds like a pretty unknown quantity to me Unleaded and Super unleaded are also two separate standards aren't they?

Shell seem a bit more coy on their website and just state that its Diesel Extra cetane rating is above normal diesel.....

Chris

In a old diesel, read XUD, you could probably run the thing of brent crude just fine.

In newer diesels I think that ultimate and derv extra have a positive effect on the smoke, but there is no way I am paying the extra money for ultimate over the shell stuff.

How can Ultimate be a known quantity if BP only guarantee it's above 55 and in many cases " is a lot higher"? Sounds like a pretty unknown quantity to me

All it needs to do is meet or exceed the required standards which it does so is safe to use.

All it needs to do is meet or exceed the required standards which it does so is safe to use.

So in that case, why does Skoda not want me to put a cetane booster into a tank of regular 51 cetane city diesel? Surely that would meet or exceed the required standards? :confused:

Chris

So in that case, why does Skoda not want me to put a cetane booster into a tank of regular 51 cetane city diesel? Surely that would meet or exceed the required standards? :confused:

Chris

Does it? Do fuel addatives have to meet the same requirements as petrol/diesel sold at petrol stations?? Does it say it meets these standards on the bottle???

Does it? Do fuel addatives have to meet the same requirements as petrol/diesel sold at petrol stations?? Does it say it meets these standards on the bottle???

"Added to diesel fuel to provide an increase in cetane number and to maintain injector cleanliness."

Therefore it raises the cetane of diesel? Therefore it "meets or exceeds" the BS EN590 standards for diesel? :confused:

Chris

Very good points raised there Chris. I can understand SUK being against oil additives but fuel additives? Like you're suggesting, the cetane number is increased, therefore meeting spec and the engine should (theroretically at least) run smoother and sweeter as it's cleaner...:confused: