Diesel emissions

[Jonnycoupe]

After 2 years it may require draining if the car recognises it hasn't used the adblue in that period without refill. It's got a 2year life from production, storing an half full opened bottle with more air volume in probably accelerates that.

 

[Joe T]

I've heard that some manufacturer's latest models will use a lot more AdBlue than previous ones. With the focus moving to real world emissions rather than just via the test cycle this is inevitable. Many systems only really work during the test cycle.

I'm hearing it could be as often as a full tank of AdBlue for every other tank of fuel. This (as suggested above) starts to eat into the fuel savings from diesel. Plus there's the hassle.

 

[Entai]

How is the adblue in a container with an airtight lid in the garage going to be any more contaminated over time than the adblue in the (Ventilated) tank on the car?

Once its open the air is into the container and contaminating the contents.

On a vehicle the AdBlue will be used up before the contaminants get to a dangerous level.

6 months in your garage in a container then into a car where it might not all get used for another 6 months or more and you are using year old AdBlue and will get issues.

Most AdBlue (there are a couple of exceptions) only has a shelf life of 6 months to a year, maybe 18 months at a push in a sealed unopened container in perfect storage conditions.

 

[robj20]

Why do some use Adblue and some dont.

 

[Orionaut]

I've heard that some manufacturer's latest models will use a lot more AdBlue than previous ones. With the focus moving to real world emissions rather than just via the test cycle this is inevitable. Many systems only really work during the test cycle.

I'm hearing it could be as often as a full tank of AdBlue for every other tank of fuel. This (as suggested above) starts to eat into the fuel savings from diesel. Plus there's the hassle.

What would happen if you just filled the Adblue tank with deionised water?

Obviously the NOX reduction catalytic process would no longer be effective.

But would it actually cause any "Damage"

IE could you add Adblue at a later stage (Say MOT test time) and have it work correctly??

 

[Joe T]

Interesting question - I have no idea!

 

[breadturbo]

Doesnt the cost of adblue kind of erase and fuel savings vs petrol? 60p a litre must be what an extra £6 a tank. I bet if you factor that in the running costs of petrol are pretty similar?

not when they are mostly motorway miles to and from airports, and do 75-110k a year each.

I dug out my last cost btw, it was much lower, 27p a litre for 6000 litres.
I did have to pay 3k for a heated tank though, as adblue is affected by temperature and also freezes at -9c (doesnt really matter here but it goes slushy first)

 

[Frozennova]

What would happen if you just filled the Adblue tank with deionised water?

Obviously the NOX reduction catalytic process would no longer be effective.

But would it actually cause any "Damage"

IE could you add Adblue at a later stage (Say MOT test time) and have it work correctly??

Interesting question - I have no idea!

I'd imagine OEMs are cunning enough to have a NOx sensor fitted pre and post AdBlue injection to stop people doing exactly that. I'd imagine there's already people offering a service to map out the AdBlue related controls though

 

[Jonnycoupe]

What would happen if you just filled the Adblue tank with deionised water?

Obviously the NOX reduction catalytic process would no longer be effective.

But would it actually cause any "Damage"

IE could you add Adblue at a later stage (Say MOT test time) and have it work correctly??

Could do this on gen1 lorry system. Now it would flag a Lin error as the NOX sensor would know there is a fault.

 

[Orionaut]

Could do this on gen1 lorry system. Now it would flag a Lin error as the NOX sensor would know there is a fault.

Would that just bring up a fault light, or would it actually put the vehicle into limp mode?

(See also, Cars)

And back to original question, would it actually do any permanent irreversible damage?

 

[DaveyD]

Would that just bring up a fault light, or would it actually put the vehicle into limp mode?

(See also, Cars)

And back to original question, would it actually do any permanent irreversible damage?

Early death to those that have to breathe in all the extra NOx!

Dunno in reality, would depend on what you really fill it with and if it would ever cause issues corroding sensors/components etc

 

[breadturbo]

Would that just bring up a fault light, or would it actually put the vehicle into limp mode?

(See also, Cars)

And back to original question, would it actually do any permanent irreversible damage?

I imagine it would give you a chance, I've read with a little googling that Audi's with a system fault give you a 650mile to no startup warning to allow a visit to the dealer.

Spoiler

 

[Jonnycoupe]

Would that just bring up a fault light, or would it actually put the vehicle into limp mode?

(See also, Cars)

And back to original question, would it actually do any permanent irreversible damage?

If it's empty you get 20 restarts then it will block engine start until refilled. I imagine a similar situation might occur. Interesting question though. It's all downstream stuff so unlikey to give long term issues once ECU reset and refilled.