Do China VI diesel vehicles still require urea solution?

[DeIker]

China VI vehicles still require urea solution, but the standards are more stringent. The primary function of automotive urea solution is to convert nitrogen oxides in vehicle exhaust into harmless nitrogen and water. Using urea solution can reduce fuel consumption, increase power, and promote energy efficiency and environmental protection, which is why the government has mandated the implementation of China V and China VI policies. Below is relevant information about urea solution: 1. The technical name for automotive urea is Diesel Exhaust Fluid (DEF). It is commonly used in diesel engines as part of the SCR (Selective Catalytic Reduction) technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition consists of 32.5% high-purity urea and 67.5% deionized water, aimed at reducing nitrogen oxide pollutants emitted by diesel engines. 2. Failure to use DEF, or using DEF of insufficient purity or inferior quality, will result in automatic engine deceleration. Additionally, inferior-quality DEF can contaminate the catalyst in the SCR catalytic reaction tank, leading to severe consequences.

[LeArabella]

As a driver with over a decade of experience with diesel vehicles, I believe that China VI-compliant diesel cars still require urea fluid, especially those equipped with SCR systems. This fluid is mainly AdBlue, used to treat harmful gases in the exhaust. The China VI standard imposes stricter emission requirements, making SCR systems a standard feature—without it, the vehicle may limit power or trigger a warning light. I always keep an eye on the dashboard alerts while driving and top up a bottle when the level is low. A single tank typically lasts around two to three thousand kilometers, and while it's not expensive, it's not worth skimping on. A few tips: urea evaporates faster in high temperatures, so store it in a shady spot during summer; buy genuine branded products to avoid clogging the injector and doubling repair costs. In short, you'll get used to it, and it helps your vehicle run more eco-friendly.

[VanRiley]

From an environmental perspective, China VI diesel vehicles indeed rely on urea solution for emission reduction. SCR technology utilizes AdBlue to decompose nitrogen oxides, mitigating air pollution risks. The China VI standards have further lowered these limits, making the fluid even more indispensable. I must remind everyone to choose high-quality urea solution to ensure high catalytic efficiency; avoid spillage during refilling to prevent soil contamination, which is hard to remediate. Occasionally, some attempt to reduce usage, but this leads to non-compliance with emission standards or fines. In the long run, this contributes to improving urban smog and adds a layer of protection for health.

[McClaire]

China VI diesel vehicles still require urea solution to support the exhaust treatment system, which involves injecting AdBlue to neutralize nitrogen oxides. Without it, emissions will exceed standards, potentially triggering warning lights or even activating speed reduction protection. The sensor alerts when the fluid level is low, making it easy to replenish promptly. Typically, it's recommended to check every 5,000 kilometers or so. Don't overlook this detail—repairs can be troublesome.