![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/AdBlue_retail_containers.jpg/640px-AdBlue_retail_containers.jpg&w=640&q=50)
Diesel exhaust fluid
Chemical which reduces air pollution from diesel engines / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about AdBlue?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
Diesel exhaust fluid (DEF; also known as AUS 32 and marketed as AdBlue[3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. DEF is consumed in a selective catalytic reduction (SCR) that lowers the concentration of nitrogen oxides (NO
x) in the diesel exhaust emissions from a diesel engine.[4]
![A small bottle and a large cannister, both labeled as "AdBlue"](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/AdBlue_retail_containers.jpg/640px-AdBlue_retail_containers.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Hino_Standardized_SCR_Unit.jpg/640px-Hino_Standardized_SCR_Unit.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Passenger_car_using_an_AdBlue_pump.jpg/640px-Passenger_car_using_an_AdBlue_pump.jpg)