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If you drive a diesel vehicle, you may have noticed an AdBlue warning on your dashboard or a separate filler cap beside your fuel cap. But what does AdBlue actually do, and why is it important?
AdBlue is a diesel exhaust fluid used in engines fitted with Selective Catalytic Reduction (SCR) technology. Its purpose is to help reduce harmful nitrogen oxide (NOx) emissions from the exhaust.
Diesel engines produce nitrogen oxides during combustion. AdBlue is injected into the exhaust system, where it helps the SCR system convert these pollutants into nitrogen and water vapour.
AdBlue is stored in a dedicated tank. It is not a fuel additive and must never be mixed with diesel.
AdBlue is used in a range of diesel vehicles and machinery equipped with SCR technology, including:
Cars and vans: Compatible passenger cars and commercial vehicles.
Lorries and buses: Heavy goods vehicles and passenger transport.
Agricultural machinery: Tractors, combine harvesters and other farm equipment.
Construction machinery: Excavators, dumpers and other diesel-powered equipment.
Not every diesel engine requires AdBlue. Check your vehicle handbook to confirm whether yours uses it and where to find the correct filling point.
Vehicles fitted with an AdBlue system typically provide dashboard warnings when the level becomes low. These warnings give you time to refill before the tank runs empty.
Depending on the vehicle, running out can reduce engine performance or prevent the engine from restarting once it has been switched off. Follow the instructions in your handbook, including any minimum refill quantity, and act on warnings promptly to avoid unnecessary downtime.
Use the correct tank. Always identify the dedicated AdBlue filling point before pouring. Never add AdBlue to the diesel tank.
Choose the right quality. Use AdBlue that meets ISO 22241, the relevant quality standard.
Keep it clean. Avoid introducing dirt, fuel or other contaminants through containers or filling equipment. Contaminated fluid can damage the SCR system.
Follow your handbook. Filling procedures and consumption vary between vehicles, so use the manufacturer’s guidance.
Where vehicles have separate diesel and AdBlue filling points, clear identification helps users find the correct tank. This is particularly useful for shared vehicles, busy fleets and machinery operated by different people.
A clearly marked AdBlue filling point provides a practical reminder during top-ups and helps reduce the risk of filling mistakes.
Keeping AdBlue topped up, using the correct fluid and clearly identifying the filling point are simple steps that help your vehicle’s emissions system work as intended.
Safety-Label has all the AdBlue stickers you will ever need. Head on over to our site for further info;
https://www.safety-label.co.uk/collections/adblue-stickers
