Bye Bye Eolys Fluid - Hello Adblue

[Johndouglas]

Looks as though Eolys fluid is on the way out.   The latest PSA engines are changing to Adblue but it seems they'll need attention more frequently.

[Parkesie]

Looks good if they do away wih the need to reset the tank level everytime iyou top it up.

[Sixchannel]

Having changed from a Xantia to a_2010 C5 I guess I have eolys fluid too.

But_- where is it, how do I know when to top it up and where and how do I reset whatever I reset?

Ah- I feel better now!

Cheers

Ian

[Parkesie]

It hides behind the rear left wheel arch linner next to the fuel tank. The dash will throw up a low wrarning which has to be reset using lexia and wont just go away of you fill it up.

[Johndouglas]

, how do I know when to top it up

As Parksie says, a warning will come up for a minute or so every time you switch on although with eolys it's not likely to happen until you're approaching 100K, whereas with Adblue, it seems it adds a greater quantity to the diesel. If that's so, the tank will need a refill about as often as it has an oil change. So here's to hoping nothing needs to be reset, otherwise it's going to be an expensive business. A browse on ebay shows that a 10Ltr can of Adblue costs around £16 a pop. A further browse throws up an electrical device that can be fitted to the engine which fools the ECU into thinking that Adblue has been injected when it hasn't........ :rolleyes:

[PICASSOCONVERT]

Adblue - sounds like something campers add to chemical toilets to me............... Just got used to Eolys and all its little ways and they go and change!

 

Does anyone know if this approach is a Peugeot/Citroen special or do other manufacturers use it?

 

David

[Johndouglas]

Whilst PSA have already switched to Adblue in their latest 2ltr engined cars, trucks have been using it since Euro 4 began. Now that we're up to Euro6 every manufacturer who builds cars powered by diesel engines of 2 ltrs and more will need to use Adblue to conform. Smaller diesel engines will be included by 2016. Filling stations will need to provide Adblue dispensers alongside the diesel pumps.

[paul.h]

If I did not have a heavy caravan I think I would not bother with a diesel in the future. All the things being needed to minimise particulate emissions are making them more expensive to run and maintain and the government seem to be thinking about ways of increasing the tax on them. This adblue reminds me of the 2 stroke engines on bikes that needed oil adding to the fuel tank before putting the petrol in. In the future if all diesels need adblue then it may as well be included in the diesel.

[ivorcitroen]

As far as i know it can't be put in with the fuel it's introduced into the exhaust.

 

The company i work for have just taken delivery of 4 m.a.n 44t trucks,i was supprised to see it was using a tank of adblue to a tank of diesel.

adblue tank = 30 litres

diesel tank = 350-400 litres approx.

[paul.h]

I hope that is not right, about 1 litre of adblue to 10 litres of diesel. From above adblue is £1.60 a litre, 10 litres of diesel now about £13 and if 10 miles a litre (45 mpg) gives a total cost of about £14.60 for 100 miles, or 14.6 p/mile including adblue 1.6 p per mile. So adblue is of the order of 10 to 20 times the cost of eolys which uses about 3 litres in 80k miles at a cost of around £100, or about 0.1 p per mile. Also every time the diesel tank is filled then the adblue tank would need filling.

[ivorcitroen]

I'm sure adblue is only around 70p a litre on the pump,i used to drive daf trucks a couple of years ago and the adblue would last 2-3 days but the tanks were 75 litre that was a euro 4.

 

Also i've read that when the change came from euro 4 to euro 5 the adblue consumpsion was 50% greater,we are now on euro 6

[paul.h]

If you can believe what is on wikipedia, then adblue is dosed at 2 to 6% of the diesel use and it must go in to the exhaust. The idea is a lean burn diesel engine with excess oxygen is used that does not give soot but the adblue is to remove NOx. It is 32.5% urea and 67.5% water. In the exhaust catalyst, the urea decomposes to carbon dioxide and ammonia which converts the NOx to nitrogen and water.

 

At 6% dosage, for every 50 litre diesel fill you would need to fill with 3 litres of adblue. You can imagine the diesel pumps with an adblue pump at filling stations will lead to more time/queues and if there are 2 filling pipes on the car in the same place, somebody will mix up the 2.

[paul.h]

Just had a look in a C4 handbook for 2014 models and the section on Adblue for the blue hdi engines says the adblue tank is 17 litres and this will be enough for 12500 miles between services so will be topped up then. At the above cost of 10 litres for £16 it could be about £30 at a dealer with labour. Probably the lifetime cost compared to eolys is not going to be much different.

 

The handbook says low level warnings are given but if it runs out the engine is prevented from running to avoid high engine emissions. If the car does about 12.5 miles a litre of diesel (about 56 mpg), then this is 1000 litres to 17 litres of adblue, so dosage is about 1.7%. It shows in the book how to top up diy and the filler cap is in the boot next to the spare wheel well (where you can put a spare wheel/jack/wheel brace/wheel nut cover removal tool if you buy them).

[MikeLane]

I used to go to Spain from France a few years ago to buy my (pipe) tobacco and noticed that filling stations sold a more expensive Blue Diesel as well "normal". Now I know what it was! As far as I know, most German diesel cars have nad a "Blue" tank for a couple of years or so. A chap I know has a 14 reg. A6 and was told that if the warning comes on he has 400 miles max. before the car stops. If he tops it up himself he needs to add about 5l. for the sensor to register. His Blue tank filler is next to the diesel but he needs a hex spanner (wheel nut size) to open it ! (As it's a leased car the tank is topped up every at every (18000 mile) service but he doesn't know how much it uses. However, a warning came up after he'd driven it just over 400 miles - from new!)

[paul.h]

Talking to one of our neighbours today, their Audi A6 uses adblue and is how you describe for the A6 to add it, next to the diesel filling nozzle. They had to top up after getting the warning messages after about 6000 miles and managed to get some from a BP garage. Unfortunately, despite the container being new and not opened, it tipped over and spilt in the car boot - now as it has dried out the boot carpet is full of white urea crystals and is also a bit smelly.

[Johndouglas]

A few weeks ago here in Spain I met a German guy who towed with a newish Merc. I talked to him about Adblue. His does around 625 miles on a litre of fluid. There are various dashboard 'low level' warnings which he can get however, should he ignore them, eventually the engine won't start. His Adblue filler cap was alongside the diesel filler.

[MikeLane]

 This makes interesting reading! Perhaps Boris could learn something!

 

http://www.psa-peugeot-citroen.com/en/featured-content/diesel-technology