AdBlue is also known as diesel exhaust fluid, but it is commonly mistaken as a fuel additive. It should never be mixed with diesel, AdBlue has its own tank and is stored completely separately to the vehicles’ fuel tank.

If you put diesel fuel into the AdBlue tank, below actions should be taken immediately to avoid some serious damage to the SCR ( Selective Catalytic Reduction).

Step 1: Do not start your engine

Starting the engine will begin the process of circulating the fluid through the entire fuel system. As AdBlue is not compatible with any engine materials it can very quickly corrode all components and pipework within the engine. If this happens the entire fuel system will need to be replaced.

Step 2: Remove the fuel

You must contact a professional to drain the tank immediately and dispose of all contaminated fluid. They will use a siphon system to suck all of the fuel out of the tank. Once the tank is empty it must be cleaned with warm water before you refuel with AdBlue.

Step 3: Check the damage

Once you are sure no diesel fuel remains in the AdBlue tank it is still essential to have a mechanic check for any damage caused. They can also replace the filters that will have absorbed the AdBlue.

Conclusion

AdBlue is a relatively new innovation and is increasingly becoming popular due to its advantages. Mixing diesel and AdBlue is nothing new. Taking adequate precaution while adding AdBlue is definitely the safest approach, but even if you accidentally make a mistake, it is entirely reversible.