What to Do If You Accidentally Put AdBlue in the Diesel Tank of an Volkswagen Fox?
If you have mistakenly poured AdBlue into the diesel tank of your Volkswagen Fox, it is crucial to act immediately. This mistake can cause severe damage to the fuel and injection system, so following the correct steps is essential to minimize the risks.
What Is AdBlue and Why Shouldn’t It Be Mixed with Diesel?
AdBlue is a solution made of urea and deionized water, used in diesel engines equipped with Selective Catalytic Reduction (SCR) systems to reduce harmful emissions. It is stored in a separate tank and must never be mixed with diesel fuel.
If AdBlue enters the fuel tank, it does not act as an additive, but instead turns into a corrosive substance that can damage engine components.
What Problems Can AdBlue Cause in Diesel Fuel?
⚠️ Crystallization and Fuel System Blockages – When mixed with diesel, AdBlue forms crystals that can clog injectors, filters, and fuel lines.
⚠️ Corrosion of the Fuel Pump and Injectors – AdBlue has a high pH level and can corrode the metal components of the fuel system.
⚠️ Major Engine Failures – If the contaminated fuel reaches the engine, it can cause the vehicle to shut down, leading to costly repairs.
What to Do If You Added AdBlue by Mistake?
🛑 Do Not Start the Engine! The most important step is to avoid turning on the ignition, as this could spread the contaminated fuel through the entire injection system.
✅ Stop Refueling Immediately – If you notice the mistake while pouring AdBlue, stop the process as soon as possible.
✅ Contact a Professional Service Center – The vehicle should be towed to a specialized workshop where the fuel tank can be drained and properly cleaned.
✅ Check and Replace Affected Components – The diesel fuel filter and fuel lines should be inspected and replaced if necessary.
How to Prevent This Mistake in the Future?
🔹 Identify the Correct Filling Ports – The AdBlue cap is blue and smaller than the diesel fuel cap to help prevent mix-ups.
🔹 Pay Attention to Fuel Pump Labels – Always read the labels carefully before refueling.
🔹 Ensure Everyone Handling Refueling Knows the Difference – If you have employees or frequently refuel at unfamiliar stations, make sure they understand the importance of keeping the two liquids separate.
If you have accidentally put AdBlue in the diesel tank of your Volkswagen Fox, do not drive the car – this can turn a minor mistake into a very expensive repair. The best course of action is to act quickly and seek professional assistance to prevent serious damage.
Stay attentive during refueling to avoid costly engine problems!
