What to Do If You Put AdBlue in Fuel Tank by Mistake

AdBlue in Fuel Tank by Mistake can cause serious problems. AdBlue is a urea-based solution designed to reduce emissions in diesel engines, but it is not a fuel. If you realize you have put AdBlue in your diesel tank by mistake, acting quickly and correctly is crucial to avoid costly damage. This guide explains what happens when AdBlue enters the fuel system, the steps you should take immediately, and how to get professional help.

Diesel fuel tank filler neck with cap removed

What Happens When AdBlue in Fuel Tank by Mistake

AdBlue is a clear, non-toxic liquid made from urea and deionized water. It is stored in a separate tank in diesel vehicles equipped with Selective Catalytic Reduction (SCR) systems. Its purpose is to reduce nitrogen oxide emissions by converting them into harmless nitrogen and water vapor.

When AdBlue is mistakenly poured into the diesel fuel tank, it mixes with the diesel fuel and causes several issues:

• Fuel contamination: AdBlue is not combustible. Mixing it with diesel fuel dilutes the fuel and can cause the engine to misfire or fail to start.

• Corrosion risk: The urea in AdBlue is corrosive to metal parts in the fuel system, including fuel pumps and injectors.

• Damage to fuel system components: Prolonged exposure to AdBlue can damage fuel filters, fuel lines, and the engine itself.

• Potential engine failure: Running the engine with contaminated fuel can lead to costly repairs or even engine replacement.

  
  

Understanding these risks highlights why immediate action is necessary if you put AdBlue in your diesel tank by mistake.

Immediate Steps to Take If You Put AdBlue in Your Diesel Tank

If you realize the mistake before starting the engine, you can limit the damage significantly. Follow these steps:

1. Do not start the engine. Starting the engine will circulate the contaminated fuel through the system, increasing the risk of damage.

2. Call for professional help. Contact a specialist fuel removal service immediately. For example, you can call 07900 379492 for expert assistance in the UK.

3. Inform roadside assistance or a mechanic. If you are stranded, explain the situation clearly so they can prepare the right tools and parts.

4. Avoid trying to drain the tank yourself. Fuel tanks are complex and require proper equipment to safely remove contaminated fuel.

5. Keep the vehicle stationary. Moving the vehicle can spread the contaminated fuel further into the system.

   
   

Taking these steps quickly can save you thousands of pounds in repairs.

How Professionals Remove AdBlue from a Diesel Tank

Specialist technicians use specific methods and equipment to remove AdBlue from diesel tanks safely and thoroughly:

• Fuel tank draining: The contaminated fuel is carefully drained from the tank using pumps designed for hazardous liquids.

• Fuel system flushing: The entire fuel system, including fuel lines and filters, is flushed to remove any traces of AdBlue.

• System inspection: Technicians inspect fuel pumps, injectors, and other components for damage.

• Refilling with clean diesel: After cleaning, the tank is refilled with fresh diesel fuel.

  
  

This process ensures the vehicle is safe to operate again without risking engine damage.

Signs Your Vehicle May Have AdBlue Contamination

If you accidentally start the engine after putting AdBlue in the diesel tank, watch for these warning signs:

• Engine misfires or stalls: The engine may run roughly or stop unexpectedly.

• Difficulty starting: The vehicle may struggle to start or fail to start at all.

• Warning lights: The dashboard may show engine or fuel system warning lights.

• Unusual smells: You might notice a chemical or ammonia-like smell from the exhaust.

• Reduced power: The vehicle may lose power or hesitate during acceleration.

  
  

If you notice any of these symptoms, stop driving immediately and seek professional help.

Preventing AdBlue Mistakes in the Future

Preventing this costly mistake is easier than dealing with its consequences. Here are some tips:

• Know your vehicle’s tanks: Familiarize yourself with the location and appearance of the diesel and AdBlue filler caps.

• Label the caps: Use clear labels or color-coded caps to distinguish between the diesel and AdBlue tanks.

• Refuel carefully: Always double-check the filler before adding any fluid.

• Ask for help: If you are unsure, ask the fuel station attendant for assistance.

• Educate others: If multiple people use the vehicle, make sure everyone knows the difference.

  
  

Taking these precautions reduces the risk of putting AdBlue in the diesel tank by mistake.

When to Call Fuel Removal Specialists

If you suspect or confirm AdBlue contamination in your diesel tank, contact a fuel removal specialist immediately. Delaying can worsen the damage and increase repair costs.

In the UK, services like those reachable at 07900 379492 provide emergency fuel removal and cleaning. They have the right tools and expertise to handle the problem safely and efficiently.

Costs and Repair Considerations

The cost of fixing AdBlue contamination depends on how quickly you act and the extent of the damage:

• Early intervention: Draining and flushing the fuel system soon after the mistake can cost a few hundred pounds.

• Delayed action: If the engine runs on contaminated fuel, repairs can run into thousands due to damaged injectors, pumps, or engine components.

• Insurance: Some insurance policies may cover fuel contamination, but check your policy details.

  
  

Getting professional advice early can save money and prevent long-term damage.