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Removing AdBlue from HGV and PSV Vehicles: Essential Steps and Considerations

Accidentally introducing AdBlue (a urea solution used for diesel exhaust fluid) into the fuel tank of Heavy Goods Vehicles (HGV) or Public Service Vehicles (PSV) can lead to significant engine issues if not addressed promptly. AdBlue is designed to reduce nitrogen oxide emissions in diesel engines, but it is not a fuel and can cause severe damage to the fuel system if mixed with diesel. Here’s a detailed guide on safely removing AdBlue from HGVs and PSVs.

Why Remove AdBlue?

Potential Engine Damage:AdBlue is corrosive and can cause serious damage to diesel engines if it’s allowed to mix with the fuel. It can lead to clogged fuel filters, damaged injectors, and other costly repairs.

Operational Downtime: Keeping AdBlue in the fuel system can render a vehicle inoperable, resulting in significant downtime for businesses that rely on their HGV or PSV fleet.

Steps to Remove AdBlue

Do Not Start the Engine: If you realize that AdBlue has been added to the fuel tank, your immediate action should be not to start the engine. This will prevent the fluid from circulating through the system, which can help minimize damage. Your vigilance in this situation is crucial for preventing further complications.

Contact a Professional Service: The safest and most effective method for removing AdBlue from your vehicle is to call a professional fuel drainage service. Technicians are trained to handle such situations and have the equipment to perform the task safely and efficiently.

Fuel Drain Process:

Assessment: A technician will assess the situation to determine how much AdBlue is in the tank and whether the engine has been started.

Drain the Tank:Using specialized pumps and siphons, the technician will remove the contaminated fuel and AdBlue mixture from the tank.

Flush the System:After draining, the fuel system must be flushed to eliminate any residual AdBlue from the lines and filters.

Refill with Diesel:The technician will refill the tank with the appropriate diesel fuel once the system is cleaned.

Post-Drain Inspection:

After the removal process, it’s advisable to thoroughly inspect the fuel system to check for any potential damage or corrosion caused by the AdBlue.

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