A synthetic solution, AdBlue is made from demineralised water and a specially created solution derived from the compound Urea.
AdBlue is not an additive for diesel that you add directly into your vehicle’s fuel tank. Instead, it uses a specialised AdBlue tank built into many modern, diesel vehicles, working in-sync with the vehicle's Selective Catalytic Reduction (SCR) system. Most vehicle users can find this tank beside their fuel tank, carrying a blue cap.
AdBlue for diesel engines abides by exacting specifications pertaining to its purity, which means that AdBlue is the only product you should use in your AdBlue tank. Going with a cheaper, off-brand product can result in major vehicle damage and costly repairs.
What does AdBlue Do?
AdBlue benefits vehicles by providing reduced emissions and bringing vehicles in-like with EU regulations.
When present in a vehicle, the SCR system will insert small amounts of AdBlue into the vehicles exhaust emissions. AdBlue then combines with the exhaust gases and converts harmful emissions into nitrogen and steam – which are both inert and harmless to the environment.
The outcome is a vehicle with much-reduced levels of nitrogen oxide emissions and cleaner, more eco-friendly performance.
When using AdBlue, it’s vital to ensure the solution is uncontaminated and pure. A vehicle’s onboard SCR will react to even the smallest impurities in AdBlue and, in turn, this will affect SCR performance. When this happens, vehicle emissions will carry more noxious gases, and that could mean the vehicle in question is producing an illegal level of harmful emissions. Moreover, impure AdBlue can also damage the SCR, leading to costly repairs or replacement.
To ensure your AdBlue fluid is pure and fit for the job, always purchase official AdBlue for diesel products. The AdBlue manufacturing process places a significant emphasis on purity and performance, meeting specific ISO22241 standards. Off-brand products don’t meet the same standards and could damage your vehicle.
It’s important to make sure that AdBlue is free from contaminants like fuel, oil and other substances, and the optimum storage temperature for AdBlue is between -11ºC and 30ºC. The best approach is to store AdBlue at a reasonable room temperature and ensure you only ever use official, trademarked AdBlue products.