Can you mix half water into automotive urea?

[BrooklynRose]

Automotive urea cannot be mixed with water. Automotive urea is a 32.5% urea aqueous solution, and compared to agricultural fertilizer urea, automotive urea has a higher purity. The SCR (Selective Catalytic Reduction) solution has obvious advantages in the exhaust emission treatment system of National IV diesel vehicles, and automotive urea is an essential additive for the SCR solution. More information about automotive urea is as follows: 1. Automotive urea is an essential additive for SCR: Automotive urea is an essential additive for SCR (Selective Catalytic Reduction), used to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition is 32.5% high-purity urea and 67.5% deionized water. 2. Working principle: When nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays diesel exhaust fluid (DEF). The DEF and nitrogen oxides undergo a redox reaction in the SCR catalytic reaction tank, producing non-polluting nitrogen and water vapor, which are then discharged. 3. Precautions: If diesel exhaust fluid is not loaded, or if its purity is insufficient, or if it is of inferior quality, the vehicle's engine will automatically decelerate. Additionally, inferior-quality DEF can contaminate the catalyst in the SCR catalytic reaction tank, leading to serious consequences.

[LeHailey]

You must never mix automotive urea with half water, as doing so can cause significant issues. Automotive urea is a specialized liquid used in diesel vehicle emission reduction systems, requiring a concentration of approximately 32.5%. Adding water dilutes it, reducing the concentration and severely impairing the proper functioning of the SCR system. This can lead to non-compliant emissions, potential system blockages, nozzle damage, or even catalyst failure. If water is mixed in, the vehicle may experience warning lights, reduced power, or complete engine shutdown during operation, compromising driving safety. The correct approach is to use only standard-compliant automotive urea solution without adding any impurities. It is advisable to regularly inspect the urea tank and ensure the use of pure products, avoiding purchases from unofficial channels. Mixing water not only risks damaging the vehicle's system but may also result in additional repair costs, outweighing any perceived benefits. In short, for the sake of vehicle health and the environment, always strictly follow the manufacturer's instructions.

[JuneMarie]

I know some friends might want to save costs by diluting diesel exhaust fluid (DEF) with water, but this practice is extremely dangerous. I've personally seen many cases where altered urea concentration due to water dilution prevents the SCR system from properly treating exhaust gases, leading not only to excessive emissions but also potential clogging of critical components. For instance, water accumulation can corrode pipelines, resulting in frequent repairs that cost more in the long run. Moreover, diluted DEF may trigger vehicle alarms or cause loss of power, posing serious risks on highways. The best advice is to only purchase DEF from reputable brands without any additives, while regularly checking fluid levels to ensure timely replenishment with pure solution. Avoid using tap water or impure water as contaminants will exacerbate issues. Regular vehicle maintenance, including timely DEF replacement, extends system lifespan, protecting both the environment and your wallet.

[SanReid]

Automotive urea is that blue bottled stuff used in diesel vehicles to reduce pollution. Never dilute it with water, or you'll be in big trouble. Adding water makes the concentration insufficient, potentially causing the SCR system to fail and leading to excessive exhaust emissions that pollute the environment. In severe cases, it can damage components, resulting in costly and time-consuming repairs. Just keep it pure—regularly top up with the proper urea solution and avoid mixing anything else. Oh, and don't add other additives either, to prevent chemical reactions from causing issues. Safety first, worry-free driving.