What to Do If You Put AdBlue in Your Diesel Fuel Tank by Mistake
- Richard B
- Jan 13
- 3 min read
Accidentally putting AdBlue into a diesel fuel tank can cause serious damage to your vehicle’s engine and fuel system. If this has happened to you, it’s crucial to act quickly and correctly to minimize the harm. This guide explains what AdBlue is, why it should never mix with diesel fuel, and the exact steps to take if you find yourself in this situation.
AdBlue in Fuel Tank by Mistake and Why It Should Not Go There
AdBlue is a liquid solution made of urea and deionized water. It is used in 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 stream, not mixed with the fuel.
Putting AdBlue into the diesel fuel tank is a mistake because:
AdBlue is corrosive to fuel system components. It can damage fuel pumps, injectors, and fuel lines.
It does not combust like diesel fuel. This can cause engine misfires and stalling.
It can clog filters and fuel injectors. Leading to expensive repairs.
It contaminates the fuel. Making the vehicle unsafe to run until cleaned.
Understanding these risks highlights why immediate action is necessary if AdBlue enters the diesel tank.
How to Recognize You’ve Put AdBlue in the Diesel Tank
Sometimes the mistake is obvious, but other times it may only become clear after symptoms appear. Signs include:
Unusual smell or color at the fuel filler. AdBlue has a distinct ammonia-like smell.
Engine warning lights. The vehicle’s computer may detect fuel system issues.
Engine hesitation or failure to start. The engine may run roughly or stall.
Fuel gauge or dashboard alerts related to emissions.
If you suspect AdBlue contamination, do not start or continue driving the vehicle.
Immediate Steps to Take After Putting AdBlue in the Diesel Tank
Stop using the vehicle immediately. Do not attempt to start the engine or drive.
Do not add more fuel or AdBlue. Avoid further contamination.
Contact a professional emergency service. For example, call 07771 029122 for expert advice and assistance.
Avoid trying to fix the problem yourself. Draining and cleaning the fuel system requires special equipment and knowledge.
What Professionals Will Do to Fix the Problem
When you call a specialist, they will typically:
Drain the contaminated fuel tank completely. This removes all traces of AdBlue.
Flush the fuel lines and filters. To clear any residue that could cause damage.
Inspect fuel system components for corrosion or damage. Including pumps and injectors.
Refill the tank with clean diesel fuel.
Test the vehicle to ensure it runs properly and safely.
This process can take several hours and may be costly, but it prevents long-term damage.
Preventing AdBlue Mistakes in the Future
To avoid putting AdBlue in the diesel tank again, consider these tips:
Label fuel and AdBlue filler caps clearly. Use stickers or color codes.
Always double-check before refueling. Take a moment to confirm which filler you are using.
Educate all drivers and users of the vehicle. Make sure everyone knows the difference.
Use separate containers for AdBlue and diesel if refilling yourself.
Keep emergency contact numbers handy. For example, save 07771 029122 for quick help.
What Happens If You Drive With AdBlue in the Diesel Tank
Driving with AdBlue in the diesel tank can cause:
Severe engine damage. Corrosion and clogging can lead to costly repairs.
Fuel system failure. Pumps and injectors may stop working.
Vehicle breakdown. Leaving you stranded and needing emergency recovery.
Voiding of warranties. Some manufacturers may not cover damage caused by contamination.
If you have driven after the mistake, inform your mechanic immediately for a thorough inspection.
How Much Does It Cost to Fix AdBlue Contamination?
The cost varies depending on the extent of contamination and damage. Typical expenses include:
Fuel tank draining and cleaning: £150–£300
Fuel filter replacement: £50–£150
Fuel injector repair or replacement: £200–£600 per injector
Labour charges: £50–£100 per hour
Getting professional help early can reduce costs by preventing further damage.
When to Call Emergency Fuel Services
If you realize you have put AdBlue in your diesel tank, call emergency fuel services without delay. Services like those available at wrongfuel-emergency.co.uk offer:
Rapid response to drain and clean your fuel system
Expert advice on what to do next
Assistance with vehicle recovery if needed
Keep the number 07771 029122 saved for quick access to help.
Comments