Putting it directly into your fuel tank could cause expensive damage to your fuel tank, pump and injection system. If you start the engine, it's likely to be an expensive write-off, so don’t touch the ignition. You’ll need to get the tank drained and the contents disposed of safely
before you can refill it. AdBlue is commonly mistaken as a fuel additive when it is actually an exhaust fluid that should never be mixed with diesel. AdBlue has its own tank and is stored completely separately to your vehicle’s fuel.
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 – Drain the fuel tank 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 diesel.
Step 3 – Check for damage Once you are sure no AdBlue remains in the fuel 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.
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