A5 Ultra & Adblue

[Jonwm]

Hi all, the countdown has started for me to fill with Adblue on my A5 s / back, Audi want a small fortune to top up and the big barrels at the petrol station have no fillers on them, wondering has anyone used the hgv pumps at BP for adblue? Does the nozzle fit? I can use these on my fuel card and would be less hassle than buying 17 1 litre bottles as Audi suggested ( they come I with a pourer)

Cheers

[yayitsadiesel]

I am awaiting delivery of my A6 which requires adblue and was going to buy this on ebay:
http://www.ebay.co.uk/itm/161369635612?ru=http%3A%...
But would also like to know if there are better options.

[Jonwm]

I was just going to try it, but you have to get the wheel brace out to remove the cap, in mine it's a spare wheel out job to get to the tool, thought I'd try here before that hassle, why its not just a normal cap I don't know.

[PositronicRay]

I struggle to see the benefits of Adblue. Can someone enlighten me?

[Blaster72]

German and Swedish sell it in 10 ltr tubs for about £15.

Have a search on GSF Website for Adblue.

[zeduffman]

PositronicRay said:

I struggle to see the benefits of Adblue. Can someone enlighten me?

It reduces NO2 in diesel exhaust emissions.

[Jonwm]

PositronicRay said:

I struggle to see the benefits of Adblue. Can someone enlighten me?

Reduces my bik as the co2 drops quite a bit compared to the same engine without 114 to 109 on mine, I was led to believe you'll never need to fill yourself it will last till the service, not quite!

[PositronicRay]

Jonwm said:

PositronicRay said:

I struggle to see the benefits of Adblue. Can someone enlighten me?

Reduces my bik as the co2 drops quite a bit compared to the same engine without 114 to 109 on mine, I was led to believe you'll never need to fill yourself it will last till the service, not quite!

Thanks I understand, tax break, little real world advantage.

[SteBrown91]

PositronicRay said:

Thanks I understand, tax break, little real world advantage.

zeduffman said:

It reduces NO2 in diesel exhaust emissions.

I think thats a pretty important real world advantage considering how much N02 modern diesel pump out.

[citizensm1th]

make your own it is only urea and de-ionised water

you could of cause just fill a clean fuel can from a larger container and then you have a filler spout

[Jonwm]

citizensm1th said:

make your own it is only urea and de-ionised water

you could of cause just fill a clean fuel can from a larger container and then you have a filler spout

Ideally didn't want to keep a supply at home, this however is my back up should the pumps not fit, going to try one over the next few days, it's down to 800 and it doesn't start once it's run out so need to get something sorted.

[citizensm1th]

Jonwm said:

citizensm1th said:

make your own it is only urea and de-ionised water

you could of cause just fill a clean fuel can from a larger container and then you have a filler spout

Ideally didn't want to keep a supply at home, this however is my back up should the pumps not fit, going to try one over the next few days, it's down to 800 and it doesn't start once it's run out so need to get something sorted.

you produce your own supply every minute of every day

[Jonwm]

I was told it was more like washing up liquid by my fleet manager ;-)

[citizensm1th]

Jonwm said:

I was told it was more like washing up liquid by my fleet manager ;-)

approx. 32% urea and 37% water, its surprising the uses for urea it makes you think twice about eating a bagel

[Blaster72]

citizensm1th said:

Jonwm said:

citizensm1th said:

make your own it is only urea and de-ionised water

you could of cause just fill a clean fuel can from a larger container and then you have a filler spout

Ideally didn't want to keep a supply at home, this however is my back up should the pumps not fit, going to try one over the next few days, it's down to 800 and it doesn't start once it's run out so need to get something sorted.

you produce your own supply every minute of every day

Good luck tapping into that supply!

Just buy some Adblue, it's not expensive and easy to get hold of.

[citizensm1th]

Blaster72 said:

citizensm1th said:

Jonwm said:

citizensm1th said:

make your own it is only urea and de-ionised water

you could of cause just fill a clean fuel can from a larger container and then you have a filler spout

Ideally didn't want to keep a supply at home, this however is my back up should the pumps not fit, going to try one over the next few days, it's down to 800 and it doesn't start once it's run out so need to get something sorted.

you produce your own supply every minute of every day

Good luck tapping into that supply!

Just buy some Adblue, it's not expensive and easy to get hold of.

I just syphoned of a pint or so do you want some?

[Blaster72]

No thanks, the OP might want your excretions though

[Jonwm]

Just to update anyone interested in this, went to a BP today which had an Adblue pump in the HGV part, fitted the nozzle fine and it was 64p per litre, much cheaper than the 10 litre drum at £12.99 and the Audi 10 litre top up at £58.

Also worth noting I took a 19mm socket with me as the tool to remove the adblue cap is infact the wheel brace :-)

[Adrian E]

Good stuff

Just to add on the technical side, the urea (which is synthetic!) is introduced into a Selective Reduction Catalyst (SCR is the common term used) downstream of the DPF under conditions when high concentrations of oxides of Nitrogen are being produced. how much your car will use depends on the dosing strategy in the engine management and how it's driven.

Most manufacturers are moving towards a 2 filler solution behind the fuel flap now, whereas others are still faffing about with spare wheel removal (Passat) to access the filler. Some are 'filled for life' of 100k miles but that just means the SCR is barely doing anything!

Modern diesels meeting Euro 6 will have SCR - no other way to meet the limits as they're too stringent now to just use more and more EGR

[silentbrown]

Adrian E said:

Good stuff
Some are 'filled for life' of 100k miles but that just means the SCR is barely doing anything!

Interesting

Good info including a map of adblue filling stations here. http://uk.air1.info/en/adblue-supply/adblue-fillin...

And the following scary (and hopefully wrong) quote from the BP http://www.bp.com/en_gb/bp-plus/uk/fuel-expertise/...

BP said:

AdBlue is available in 10 litre cans (with pouring spout) – enough solution to enable an SCR fitted vehicle to run for 250 miles

(= 94 miles per gallon of adblue!)