Do China VI Diesel Cars Still Use Urea?
2 Answers
China VI diesel cars still use urea, but the requirements are more stringent. The basic function of automotive urea solution is to convert nitrogen oxides in vehicle exhaust into harmless nitrogen and water. Using urea solution can reduce vehicle fuel consumption, increase power, and be both energy-saving and environmentally friendly. The hazards of not adding urea in China VI vehicles include: automotive urea solution can optimize the engine and fuel consumption, reducing diesel consumption by up to 6%; conversely, prolonged non-use of automotive urea solution can lead to urea crystallization clogging pipelines, nozzles, and pump bodies, causing partial or complete system damage. The China VI Motor Vehicle Pollutant Emission Standards are established to prevent pollution from compression ignition and gas-fueled spark ignition engine vehicle exhaust, protect the ecological environment, and safeguard human health.
I've been driving a China VI diesel car for three years, and of course, it uses urea. This urea solution is called AdBlue, and it must be added to a dedicated tank; otherwise, the car will throw an error and won't go fast. I remember once when I was on a business trip and didn't check the fluid level, the speed suddenly got limited to 30 km/h on the highway, forcing me to make an emergency stop. The China VI standards are very strict, relying on this system to treat pollutants in the exhaust—without urea, it can't meet environmental requirements. Now I've developed a habit of checking every 5,000 kilometers and topping it up to full. Urea isn't expensive; a barrel costs just a few dozen yuan and can be bought at gas stations. Don't skimp and use low-quality products, as they can damage the engine. Long-term use is worry-free and eco-friendly, so I fully support this design.
