What to Do If You Put AdBlue in Your Diesel Fuel Tank by Mistake
- Adblue in Diesel Specialist
- Jan 14
- 4 min read
Accidentally putting AdBlue into a diesel fuel tank is a costly and stressful mistake that can happen to anyone. If you find yourself in this situation, acting quickly and knowing the right steps can save your vehicle from serious damage and expensive repairs. This guide explains what AdBlue is, why it should never mix with diesel fuel, and what you should do immediately if this error occurs. It also provides practical advice on how to get professional help, including a specialist service available nationwide 24/7 at 07459 909935.
Understanding AdBlue in Fuel Tank by Mistake
AdBlue is a liquid solution made of urea and deionized water. It is used in modern diesel vehicles equipped with Selective Catalytic Reduction (SCR) systems to reduce harmful nitrogen oxide emissions. AdBlue is stored in a separate tank and injected into the exhaust system, not the fuel tank.
Diesel fuel, on the other hand, powers the engine. Mixing AdBlue with diesel fuel is dangerous because AdBlue is not combustible and contains chemicals that can damage the fuel system, injectors, and engine components.
Why Putting AdBlue in the Diesel Tank Is a Serious Problem
When AdBlue enters the diesel tank, it contaminates the fuel. This contamination can cause:
Fuel system corrosion: AdBlue’s chemical composition can corrode metal parts inside the fuel tank and fuel lines.
Fuel filter blockage: AdBlue can crystallize and clog fuel filters, preventing proper fuel flow.
Engine damage: Contaminated fuel can cause misfires, poor combustion, and engine stalling.
Costly repairs: Fixing the damage often requires draining and cleaning the entire fuel system, replacing filters, and sometimes repairing or replacing injectors.
The severity of the damage depends on how much AdBlue was added and whether the engine was started after the mistake.
Immediate Steps to Take If You Put AdBlue in Your Diesel Tank
If you realize you have put AdBlue in your diesel tank, follow these steps without delay:
Do not start the engine
Starting the engine will circulate the contaminated fuel through the system, increasing the risk of damage.
Turn off the ignition and remove the key
This prevents accidental starting.
Call a specialist immediately
Contact AdBlue In Diesel Tank Specialist nationwide 24/7 at 07459 909935. We have the tools and expertise to handle the situation safely.
Avoid trying to fix the problem yourself
Draining and cleaning the fuel system requires professional equipment and knowledge.
What Professionals Do to Fix the Problem
When a specialist arrives, he will:
Drain the contaminated fuel tank completely
This removes all traces of AdBlue and contaminated diesel.
Flush the fuel lines and fuel system
Specialists use cleaning agents and flushing equipment to clear any remaining residue.
Inspect injectors and fuel pumps
These components are checked for damage and cleaned or replaced if necessary.
Refill with clean diesel fuel
After cleaning, the tank is refilled with fresh diesel to ensure proper engine operation.
This process can take several hours depending on the extent of contamination.
How to Prevent Putting AdBlue in the Diesel Tank
Prevention is always better than cure. Here are some tips to avoid this costly mistake:
Know your vehicle’s tanks
Familiarize yourself with the location and appearance of the diesel and AdBlue filler caps.
Look for clear labels and colors
AdBlue filler caps are usually blue, while diesel caps are black or green.
Pay attention at the pump
Take your time when refueling, especially if you are using a different fuel station or vehicle for the first time.
Ask for help if unsure
If you are not confident, ask a staff member or another driver for assistance.
Use separate keys or covers
Some drivers use color-coded covers or separate keys for the diesel and AdBlue tanks to avoid confusion.
What Happens If You Start the Engine After Adding AdBlue
If the engine is started after AdBlue has been added to the diesel tank, the contaminated fuel will circulate through the fuel system and engine. This can cause:
Immediate engine misfires or stalling
Damage to fuel injectors and pumps
Increased repair costs due to more extensive cleaning and part replacement
If this happens, stop driving immediately and call a specialist. Continuing to drive can cause irreversible damage.
How Much Does It Cost to Fix AdBlue Contamination?
Repair costs vary depending on the vehicle type and contamination extent. Typical costs include:
Fuel draining and flushing: £350–£1200
Injector cleaning or replacement: £600–£800
Fuel pump repair or replacement: £900–£1000
Using a specialist service like the one available nationwide 24/7 at 07459 909935 can help minimize costs by providing fast and effective assistance.
When to Call the Nationwide Specialist Service
If you have put AdBlue in your diesel tank, call the specialist service immediately at 07459 909935 if:
You are stranded and need urgent help
You want to avoid costly damage and repairs
Our service operates 24/7 across the country, ensuring help is available whenever you need it.
Summary and Next Steps
Putting AdBlue in your diesel fuel tank by mistake is a serious issue that requires quick action. Do not start your engine, turn off the ignition, and call a specialist immediately. Professional draining, flushing, and cleaning of the fuel system are necessary to prevent damage and costly repairs.
To avoid this mistake in the future, familiarize yourself with your vehicle’s fuel system, pay close attention when refueling, and use preventive measures like color-coded caps or covers.
If you find yourself in this situation, remember the nationwide specialist service at 07459 909935 is ready to help 24/7. Acting fast can save your vehicle and your wallet.
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