Are Exhaust Fluid and Automotive Urea the Same?
2 Answers
Exhaust fluid and automotive urea are not the same. The specific introductions of automotive urea and exhaust fluid are as follows: Introduction to Automotive Urea: Automotive urea refers to an aqueous urea solution with a urea concentration of 32.5% and a solvent of ultra-pure water. The raw materials are specialized automotive urea materials and ultra-pure water. Function of Automotive Urea: Automotive urea is an essential product for heavy-duty diesel vehicles to meet the National IV emission standards. It primarily serves to purify exhaust gases by reacting with nitrogen oxides (NOx) in the exhaust, thereby reducing NOx emissions. The main function of automotive urea is to convert nitrogen oxides (NOx) produced by diesel engines into harmless nitrogen gas (N2), reducing the NOx content in the exhaust to comply with national emission standards. Introduction to Exhaust Fluid: Exhaust fluid is a liquid used to reduce nitrogen oxide pollution in diesel vehicle exhaust.
I've been driving diesel vehicles for over a decade, and exhaust fluid and automotive urea are essentially the same concept. It's a blue liquid used to reduce harmful gas emissions in the exhaust pipe. AdBlue is a well-known brand name, but whether you call it exhaust fluid, automotive urea, or DEF fluid, they all fundamentally contain urea components and are added to a dedicated tank in the vehicle. I remember one time I added it to the wrong place and almost damaged the fuel system, but luckily I fixed it in time. It needs to be stored in a cool place, away from direct sunlight or freezing, otherwise it can spoil and become ineffective. If you don't use it, the vehicle might trigger a warning, limit speed, or even result in a fine, affecting daily driving. Regularly checking the fluid level can prevent trouble—it's not expensive, but you can't go without it.
