Does your Skoda require adblue ? It’s there for a purpose not like the old shots of Redex of yesteryear. If it did require adblue you certainly would not have done 115 k miles without putting any in. It does nothing for the car’s performance or longevity it’s there to reduce diesel NOX emission.
Correct, when MOT have been done no mention has ever said anything about it. When motor homing in the nineties there were many people saying about Millers oil being the best for performance etc which like most things they are soon forgotten, so does this additive really work?.
What it does is reduce NOX levels in the exhaust. So yes it does work but cit doesn’t do anything for engine performance. The use of Urea (adblue) is a well established process of Selective Catalytic Reduction which ships introduced at least 20 years ago. It will not be forgotten as long as there are diesel vehicles/engines. If your car requires it then it will not go very far without it being replenished.
I am led to believe it does work, but whether it's true or not is overshadowed by legal requirement, where if a EU6 rated vehicle is built with a urea (Adblue) additive system, if the reservoir empties whilst the vehicle is in motion, the engine management warning will be produced, and after a short while, the performance of the engine will be limited to "limp home" mode. Once the engine stops the engine management system will prevent the engine from restarting until the reservoir is replenished. Thats why its not a good idea to run out.
At least as far as my Euro-6 VW Touareg goes - running out of Adblue won't put the engine into "limp mode" - it'll continue running normally until it's switched off, then it won't restart - the electronics monitor the Adblue level and give a warning at 1500 miles from empty, which is repeated every 100 miles - NOTE when towing, the 100 mile countdown occurs every 40 miles due to the engine working harder and using more diesel.
It’s a well established chemical process which the motor industry introduced as a means of reducing NOX emissions to meet legal limits.
Try this one for “size”. 😃I was hoping for a simple explanation as that is way over my head!
dieselforum.org
Much better and now have an understanding. Is there really a need for the DPF to be fitted or does that trap other nasty stuff that the Adblue cannot eliminate?Try this one for “size”. 😃
Selective Catalytic Reduction (SCR) | Engine Technology Forum
Learn more about Selective Catalytic Reduction (SCR), an advanced active emissions control technology system that reduces tailpipe emissions of nitrogen oxides.
The DPF deals with soot particles which are quite different to the NOx gases although both are very harmful to people.
The levels of carbon dioxide in the atmosphere don’t affect the decision to introduce ULEZ which are targeted at reducing ground level pollutants namely particles PM2.5 and less, and NOX. Both of which are deemed harmful to health. A by product of DPF and SCR is increased carbon dioxide levels from exhausts. But the balance of advantage still lies with reducing exhaust emissions at street level.
CO2 levels are related to LEZ introductions as well as London's ULEZ - it's the higher levels of CO2 that cause temperature inversion over urban areas which prevents the NOx breaking down naturally and so causes high levels of NOx in urban areas - which is why some motorways in urban areas are having reduced speed limits imposed to try to improve air quality.
Came back from a weekend in Chester via M6 and M5 and the elevated M5 in Birmingham has 60 mph fixed limit with signs informing it is for air quality improvements. Chance to do 60 mph would have been welcomed. 😂
Few mention carbon dioxide levels in cities as they are well below the levels that HSE use for industrial exposure. I’ve been in environments where exposure to 1% for long continuous periods brought no increase in morbidity. In London carbon dioxide emissions have reduced 45% since peak emissions in 2000, despite in increase in population. The emissions deemed harmful to health are fine particulates and NOX and it’s these that LEZ/ULEZ are aimed at reducing.
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