Replacement Interval for Automotive Urea Filter
2 Answers
Automotive urea filters are typically replaced based on mileage, generally every 50,000 to 60,000 kilometers. The contaminant-holding capacity of urea filters is limited, so even when using genuine urea solution, regular replacement is necessary. Once the filter loses its filtration effectiveness, impurities in the urea can cause system failures. When selecting automotive urea solution: 1. Certification compliance: Must meet GB29518-2013 standards and have AdBlue certification issued by the German Automotive Industry Association. 2. Valid certification: Must possess CGT certification issued by the China Internal Combustion Engine Industry Association. Products with these three certifications are considered qualified. Substandard products can cause significant damage to the vehicle's three-way catalyst, and once damaged, replacement is the only option, resulting in high repair costs. 3. Regular replacement: Using genuine urea solution and regularly replacing the urea filter ensures normal vehicle operation, prevents engine torque limitation, and maintains proper functioning.
I've been driving a diesel pickup for seven or eight years, and you shouldn't rigidly stick to the mileage for urea filter replacement. For normal city commuting, check it every 50,000 kilometers. If you frequently go on long trips or heavy-duty transportation, pay attention at 30,000 kilometers. Once, my urea pump failed, and the repair shop said it was caused by the filter being clogged for too long without replacement. Monitoring urea consumption is particularly useful: if you notice a sudden 10% increase in urea consumption under the same driving conditions, or if the exhaust fault light on the dashboard comes on, these are signs that you should replace the filter. Winter requires even more frequent checks, as urea crystallization can easily clog the filter when temperatures drop below -11°C. I make it a habit to replace it before winter.
