How Often Should You Refill Automotive Urea Solution?

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When the remaining automotive urea solution drops below approximately 20%, it should be promptly refilled. Effects of automotive urea on human health: Automotive urea consists of 32.5% high-purity urea and 67.5% deionized water. Under normal circumstances, automotive urea is harmless to humans (if it comes into contact with the skin, simply rinse thoroughly with plenty of soapy water or clean water, but be sure to avoid contact with eyes or ingestion). However, under high-temperature conditions, automotive urea may release ammonia gas, which can have corrosive and irritating effects on human skin tissue. Prolonged exposure to ammonia gas may lead to symptoms such as skin pigmentation or ulcers. Function of automotive urea: Automotive urea is used in the Selective Catalytic Reduction (SCR) system of diesel vehicles to catalytically reduce nitrogen oxides in the exhaust into harmless nitrogen (N2) and water, which are then expelled.