How Often Should You Add Urea to Your Car?

1 Answers
LeilaniFitz
07/30/25 7:58am
Car urea should be added approximately every 2000 kilometers. Details about car urea are as follows: Urea consumption: 3 to 5 liters of urea are used per 100 liters of diesel, equivalent to 3% to 5% of fuel consumption. Function of car urea: Car urea is a liquid used in SCR technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition is 32.5% high-purity urea and 67.5% deionized water. Reason for adding car urea: The main harmful substances in diesel vehicle exhaust are nitrogen oxides and particulates. While particulate emissions can be reduced through technical means within the engine, the exhaust primarily contains nitrogen oxides. By injecting urea into the exhaust after-treatment device, the urea decomposes into ammonia at high temperatures, which then reacts with nitrogen oxides in the presence of a catalyst to produce harmless nitrogen and water.
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