Menu toggle

Pig's wee - not likely!

Lancerlot

PCGB Member
Member
At launch last evening, discovered diesel versions require topping up with pig wee to comply with more stringent emission regulations. You get a "200 miles to go" warning light - then the engine stops. [&:] Highly corrosive stuff too apparently. Anyway, can't be doing with all that, so petrol only for me from now on.
Regards,
Clive.

 
My Q5 170TDi uses the same stuff (AdBlue), the reservoir quantity is supposed to be sufficient to last between services which is mileage dependent or max of 2 years, my first warning came at 16000 miles just under 2 years old, so in accordance with the handbooks instructions I put in 2 bottles of the stuff (1.89 litres/bottle) but at 20000 miles I got the same warning message to fill up within 1500 miles, if you don't and ignore the subsequent warnings then when it's all gone the engine cannot be restarted. What was annoying is that it had been serviced at 17000 miles and although I specifically asked for the AdBlue to be checked I was told all was ok, so it went back to the Audi dealership again for a check and this time was filled with 7 more bottles of AdBlue (13.2 litres). This stuff is expensive at just under ÂŁ7 for a 1.89L bottle and apparently the reservoir holds about 20 litres, which is not documented anywhere in the vehicles handbook. What I really don't like is that once the warnings have started the available distance drops very quickly and disproportionately to the actual and as I said earlier once the last message is displayed that's it, you stop and then it's no longer possible to restart the car.

I believe the diesel engine in the Macan is sourced from Audi hence the same requirement for AdBlue.

Like Clive it will be the Petrol version if I go for it.
 
ORIGINAL: Lancerlot

can't be doing with all that, so petrol only for me from now on.


[:)]

So the cost (and hassle) of petrol over diesel narrows once more.

David


 

The diesel really is a dirty engine. Granted, carbon dioxide levels are lower than an equivalent capacity petrol engine but I'm more concerned about the emission of their carcinogenic particulates and oxides of nitrogen which are particularly dangerous in urban environments.

So, in addition to a cat converter, the modern diesel engine requires a particulate trap and now AdBlue to control its emissions, all of which add to development, manufacturing and maintenance costs. With modern DFI petrol engines giving improved fuel economy, lower emissions and more power and torque (using injector technology developed for the diesel engine), I wonder how much longer we'll be seeing the advance of the diesel in the UK?

Speaking to a salesman at the Hatfield PC launch of the Macan yesterday, he said that 80% of the Centre's 50 allocated cars were diesels, so whether or not we'll continue to see the "dieselisation" of the SUV sector remains to be seen. Unless you're doing a very high annual mileage or are bogged down continually in traffic (less of an issue now with stop-start technology), I can't understand why anyone would choose a diesel engined Macan over its petrol engined equivalent in what is supposedly a "sporty" vehicle. Much as I admire the low speed pulling power of the diesel, its nice to have a reasonably torquey engine which will rev to 6,000rpm rather than hit the limiter at around 4,000rpm. And over a 3-year/30,000 mile period, I doubt very much that the overall running costs of the diesel version will be significantly lower than that of the petrol.

Jeff
 
AdBlue - I had to look it up!

http://en.wikipedia.org/wiki/Diesel_exhaust_fluid

The name is actually a registered trademark:

http://www.vda.de/en/arbeitsgebiete/adblue/

As it's made from pig's urine, I wonder if Muslims have theological problems with it? Just asking...
 
As it's 32% high purity urea and 68% water I guess it is more likely to be chemically produced rather than fitting lots of pig's with catheters[:)] By the way, if the urea tank runs dry you can't just pee in it yourself to get you home.....
http://www.greencarreports.com/news/1042727_adding-urea-to-clean-diesel-cars-can-i-just-pee-in-the-tank

[:D]
 
AdBlue is what Audi call the stuff, I think Mercedes use it as well. I did some research ......
The DPF "regenerates" by burning the soot particles leaving an ash deposit, over time that ash builds up and eventually the DPF has to be replaced.
The problem is that if the DPF never gets hot enough the soot particles don't burn off so the filter gets clogged and then its an expensive replacement a lot earlier than would normally happen.

One type of DPF has an integrated oxidising catalytic converter and is located very close to the engine where exhaust gases will still be hot, an engine fitted with one of these will not be using any additives, the other type uses additives (AdBlue) to lower the ignition temperature of the soot particles. So it looks like this is what Audi uses in the Q5 (TDi 170/177 not sure about the 3 litre) as well as Porsche now with the Macan, would be interested to know if it's the same in the Cayenne diesel engines.




 

ORIGINAL: BigCat

AdBlue is what Audi call the stuff, I think Mercedes use it as well. I did some research ......
The DPF "regenerates" by burning the soot particles leaving an ash deposit, over time that ash builds up and eventually the DPF has to be replaced.
The problem is that if the DPF never gets hot enough the soot particles don't burn off so the filter gets clogged and then its an expensive replacement a lot earlier than would normally happen.

One type of DPF has an integrated oxidising catalytic converter and is located very close to the engine where exhaust gases will still be hot, an engine fitted with one of these will not be using any additives, the other type uses additives (AdBlue) to lower the ignition temperature of the soot particles. So it looks like this is what Audi uses in the Q5 (TDi 170/177 not sure about the 3 litre) as well as Porsche now with the Macan, would be interested to know if it's the same in the Cayenne diesel engines.

The Cayenne diesel also uses Adblue.
 
AdBlue also appears to be corrosive, this a quote from my OPC contact;

Ref. Ad Blue, we've already had the demonstration from Porsche and whatever it is, you wouldn't want to get it on the paint!!


D
 
Unfortunately this is another example of Porsche sales people treating customers like fools.

Adblue is not classed as a hazardous substance nor it's it necessary to use any special handling procedures.

http://www.bdfuels.co.uk/PDFs/MSDS_Jan_2006.pdf

ORIGINAL: dpoynton

AdBlue also appears to be corrosive, this a quote from my OPC contact;

Ref. Ad Blue, we've already had the demonstration from Porsche and whatever it is, you wouldn't want to get it on the paint!!

D
 
I work in emissions testing and while diesels are now being sold in countries where they were previously disallowed I wouldn't buy one, carcinogenic fumes etc and they stink! Add to that the number of diesel patches left on the roads while if someone leaves the cap off the petrol tank it evaporates so no hazard but roundabouts can prove hazardous especially near fuel stations thanks to diesels!

And soon we will be getting GPF's on Gasoline vehicles.
 

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Back
Top