NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
  
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| AdBlue limited shelf life. |
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Quote:AdBlue deteriorates over time. Never use AdBlue after its expiry date has passed.
Unless you cover very high mileages, do not stockpile large quantities at home.
Ultra-violet light speeds-up AdBlue’s deterioration and this can damage your exhaust system’s delicate catalyst. Therefore, buying bottles that have been sitting outside a petrol forecourt may not be a good idea. Instead, look for bottles that have been stored indoors, or in the dark.
Don’t keep a half-empty container of AdBlue in your garage if you have some left over after topping up, as airborne contaminants can affect the chemical.
The shelf life of AdBlue as defined in the ISO 22241-3 standards.
At constant temperatures up to 30 deg C the product will last a minimum of 12 months; at constant temperatures up to 35 deg C the shelf life is reduced to a minimum of 6 months.
Store at between minus 6 °C and 25 °C to maximize the shelf life to 18 months.
The above come from a Google search done by a friend, which he sent to me seeing a bottle of AdBlue on a shelf in my garage. I couldn't tell him exactly when it was purchased but certainly more than 12 months ago - his reaction "Chuck it".
He also recommends emptying the AdBlue tank & refilling with "fresh" AdBlue as there is a risk of crystallisation. How do I do that please?
Here on in I'm inclined to top up at a filling station from time to time
https://www.novax.com.sg/novax-adblue/long...dblue-def/
NJSS
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 15th Mar 2022 4:58 pm |
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LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23832
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Interesting and useful. Thanks for sharing.  2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography (now semi-retired)
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| 15th Mar 2022 6:38 pm |
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popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
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We use large amounts and never had an issue . It needs to be stored out of direct sunlight
Crystallisation will not occur whilst in solution. There are so many myths and old wives tales around add blu.
WE use 1000 litre IBCs and have never seen a use before date on any of them.
Soon to become in short supply if you listen to supplier rumours.l
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| 15th Mar 2022 11:59 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
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popsdosh - Many thanks
I'm inclined to think that if you use large amounts you won't be storing the AdBlue for long.
The bottle that I chucked didn't have a use by date on it.
I'm going to err on the safe side and drain the tank, if I can, before refilling with fresh fluid, anyone know how to do this please?
NJSS
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| 16th Mar 2022 10:23 am |
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qcnr
Member Since: 23 Nov 2017
Location: Norway
Posts: 117
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Unless you can see crystallization. I wouldn't bother.
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| 16th Mar 2022 11:17 am |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
 
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No need to drain the cars tank, we have trucks standing for months and sometimes all year with the same adblue in the tank, loads of other emission related issues but not the actual adblue itself.
We were told it has a shelf life of 6 mths in storage, why that does not relate to whats in the cars tank I have no idea?
I would be wary of draining the cars tank in case you cause other issues.
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| 16th Mar 2022 2:59 pm |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1146
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Should you want to drain the Adblue tank.
Remove the spare wheel. remove the metal cover protecting the adblue plastic tank. There is a little rubber hose you can pull out, with a plug in the end. Squeeze the two press buttons & remove the plug draining into a container.
Dispose of responsibly, as it will kill plants & contaminate the ground.
Refill the adblue tank, but don't overfill, as it reads empty!
As long as you complete the drain & partial refill without switching the ignition on, you won't have any problems with regard resetting the display.
regards
Steve
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| 16th Mar 2022 3:41 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
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Many thanks Steve.
NJSS
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| 16th Mar 2022 4:08 pm |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
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The Land Rover service checklist states that under low mileage conditions the ad blue tank should be drained after two years . Here is the item from the service checklist:
Quote:Drain the DEF tank if the vehicle has covered less than 16,000 miles (26,000 km) in 2 years
My car was in this position at the second service so I asked about it. The service person I spoke with shrugged it off and said he had never heard of it. Typical . Gary
-------------------------------------------
Discovery 4 HSE 2016MY
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| 16th Mar 2022 5:38 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
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Thanks Gary - that's exactly my position. I normally do 10-12k miles per annum; because of Covid I have only done a little less than 10k miles in 24 months!
NJSS
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| 16th Mar 2022 5:55 pm |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1146
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I would suggest just top up by say, 5 litres when the top up warning comes on. There is no need to carry a full tank of adblue, just to drain it down every 2 years.
Even a low mileage car would get through 5 Litres in 2 years.
That way it will stay fresh.
The system measures the performance of the adblue by the Nox reading from the nox sensor. It will flag a adblue quality fault code if the adblue isn’t performing as it should.
So if you do low mileage, use up the adblue until the message appears, then just add 5 Ltrs until the message appears again.
Regards
Steve
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| 16th Mar 2022 6:41 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13024
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| Re: AdBlue limited shelf life. |
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NJSS wrote:AdBlue deteriorates over time. Never use AdBlue after its expiry date has passed.
Unless you cover very high mileages, do not stockpile large quantities at home.
Ultra-violet light speeds-up AdBlue’s deterioration and this can damage your exhaust system’s delicate catalyst. Therefore, buying bottles that have been sitting outside a petrol forecourt may not be a good idea. Instead, look for bottles that have been stored indoors, or in the dark.
Don’t keep a half-empty container of AdBlue in your garage if you have some left over after topping up, as airborne contaminants can affect the chemical.
The shelf life of AdBlue as defined in the ISO 22241-3 standards.
At constant temperatures up to 30 deg C the product will last a minimum of 12 months; at constant temperatures up to 35 deg C the shelf life is reduced to a minimum of 6 months.
Store at between minus 6 °C and 25 °C to maximize the shelf life to 18 months.
Never realised Cow-Peas was such an unstable compound !
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| 16th Mar 2022 7:38 pm |
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popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
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SteveNorman wrote:Should you want to drain the Adblue tank.
Remove the spare wheel. remove the metal cover protecting the adblue plastic tank. There is a little rubber hose you can pull out, with a plug in the end. Squeeze the two press buttons & remove the plug draining into a container.
Dispose of responsibly, as it will kill plants & contaminate the ground.
Refill the adblue tank, but don't overfill, as it reads empty!
As long as you complete the drain & partial refill without switching the ignition on, you won't have any problems with regard resetting the display.
regards
Steve
Oh please its not concentrated enough to kill plants we use 4 times the strength as fertiliser as for contaminate the ground  Another urban myth about that horrible stuff called Ad Blu along with it being corrosive ( It does damage some rubber seals if the wrong type of rubber).
Last edited by popsdosh on 16th Mar 2022 8:01 pm. Edited 1 time in total
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| 16th Mar 2022 7:51 pm |
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SteveNorman
Member Since: 14 Oct 2005
Location: Somerset
Posts: 1146
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Well, I did a test by putting some on a small patch of our gravel car park. It was covered with grass & weeds. I poured adblue onto it, as I was curious, as the label didn't state hazardous.
It killed that area overnight & still hasn't fully recovered. That was about 4 months ago... So I would suggest don't use it as fertiliser 
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| 16th Mar 2022 7:58 pm |
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popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
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We use urea four times the strength all the time as fertiliser .
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| 16th Mar 2022 8:03 pm |
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