Water in Adblue tank

[Alun Price]

Warning !
I managed to put half a pint of water into the Adblue tank by mistake. I filled the rest of the tank with Adblue and forgot about it. This resulted in a Christmas tree full of warning lights etc. My Citreon dealer has told me that the bill for this will be £2600. It cannot be cleaned and the tank and pipes will have to be replaced. To insult me further parts are on back order and my car has been in the garage for a month awaiting the bits. I feel like i have been mugged!. I have written to Citreon UK no reply yet. Meanwhile My old Berlingo sails serenly on serves me right for having two cars

[Sol]

I really have to ask. How on earth did you manage to accidentally put half a pint of water in the Adblue tank?

[Alun Price]

I really have to ask. How on earth did you manage to accidentally put half a pint of water in the Adblue tank?

picked up the wrong container. Mind in neutral for 5 seconds! Costly mistake

[Sol]

I'd be tempted to drive on and try to get rid myself. The Adblue is injected into the cat directly and not into the fuel tank so the water won't reach the engine and do any damage.

Unfortunately a tank takes 12500 miles to deplete. Maybe get a friendly mechanic to dump the contents and refill it again. It would need the pipe from tank to injector disconnected and the pump would run when commanded by Autel or Diagbox in test mode.

Better than shelling out £3k.

[deejay_xb]

afaik adblue is piss+water (in some percentage) so if you put like 0.5-1l of water, then fill the reservoir with adblue and it should be ok!

[notsofast]

afaik adblue is piss+water (in some percentage) so if you put like 0.5-1l of water, then fill the reservoir with adblue and it should be ok!

Yes I was surprised that just half a pint of water (= less than 300ml) should throw up so many warnings.  AdBlue is just purified urea.  (Urea is a component of urine, though urine contains other stuff and isn't suitable for putting in an AdBlue tank).  I would've expected the water to only have diluted the AdBlue slightly?