How Much AdBlue Should Be Added at a Time?
2 Answers
Typically, AdBlue needs to be refilled every 2,000 kilometers, with 3 to 5 liters of AdBlue used per 100 liters of diesel fuel. The consumption of AdBlue is approximately 3% to 5% of the fuel consumption. AdBlue is a liquid used in SCR (Selective Catalytic Reduction) technology to reduce nitrogen oxide (NOx) emissions from diesel vehicles. It consists of 32.5% high-purity urea and 67.5% deionized water. Reasons for Adding AdBlue to Vehicles: The primary harmful substances in diesel vehicle exhaust are nitrogen oxides (NOx) and particulate matter (PM). While engine technology can reduce particulate emissions, NOx remains a major concern. AdBlue is injected into the exhaust after-treatment system, where it decomposes into ammonia (NH3) at high temperatures. In the presence of a catalyst, ammonia reacts with NOx to form harmless nitrogen (N2) and water (H2O). Therefore, the main purpose of adding AdBlue to diesel vehicles is to reduce harmful exhaust emissions. Precautions for Using AdBlue Solution: AdBlue solution is generally harmless to humans. If it comes into contact with the skin, simply rinse thoroughly with soapy water or clean water. If it accidentally splashes into the eyes, lift the eyelids and rinse immediately with clean water. If ingested in large quantities, seek medical attention promptly. In high-temperature environments, AdBlue solution may release ammonia gas, which can corrode and irritate skin tissues. Prolonged exposure to ammonia may cause skin pigmentation or finger ulcers in some individuals. If such symptoms occur, medical treatment is necessary.
I've been driving diesel vehicles for over a decade, and there's really no fixed amount for AdBlue refills. The tank sizes vary significantly between vehicles - compact cars may hold 10 liters while heavy trucks can go up to 80 liters. I simply refill when the dashboard urea level warning light comes on, stopping at about 90% capacity because AdBlue expands in summer heat and overfilling may cause leaks that corrode the chassis. For long-distance trips, I always top up the AdBlue tank beforehand - consumption typically runs 1.5-2 liters per 100km. Don't stockpile AdBlue as opened containers may crystallize within three months. Remember to use the dedicated narrow nozzle at the filling port - don't confuse it with the diesel fuel nozzle.
