Wrong Fuel In Car? Here’s What You Can Do:
Have you accidentally put AdBlue into your diesel fuel tank? Don’t worry—this is a common mistake, especially with modern diesel vehicles that use AdBlue systems. As these systems become more widespread, cases of incorrect filling have increased, but there is a safe and effective solution available.
In many cases, drivers don’t immediately realise that using the wrong fluid can quickly lead to vehicle issues or even a breakdown if the system is started or driven.
Why This Happens ?
Many modern diesel vehicles use AdBlue, a special fluid designed to help reduce harmful nitrogen oxide (NOx) emissions. It is stored in a separate tank and must never be mixed with diesel fuel. AdBlue and diesel are completely different substances—AdBlue does not burn and can cause serious damage if it enters the fuel system.
Even though vehicles are designed with clearly marked and colour-coded filler caps and separate filling points, mistakes can still happen. In diesel cars equipped with an SCR system, the blue AdBlue filler is usually located near the diesel cap. However, in a hurry or during a moment of distraction at the fuel station, it can still be easy to confuse the two.
What Happens if AdBlue Goes in the Diesel Tank
Adding AdBlue into a diesel fuel tank can lead to serious problems because:
- AdBlue is a water-based solution and cannot be used as fuel, so the engine may fail to start.
- It interferes with proper fuel combustion and lubrication, which can cause issues with injectors and fuel pumps.
- The urea and water content in AdBlue can be corrosive to metal components and may cause crystallisation, leading to blockages in filters and fuel lines.
For these reasons, any AdBlue contamination in the diesel system should be removed as quickly as possible to prevent potential damage.
What to Do Immediately
Stop the Vehicle Safely
If you realise that AdBlue has been added to your diesel tank, the first and most important step is to stop immediately. Do not start the engine, as this can circulate the contaminated fluid through the fuel system.Contact Wrong Fuel Specialists Immediately
Get in touch with us as soon as possible. The quicker we attend, the lower the risk of potential damage to your vehicle.Avoid DIY Attempts
Do not try to drain the tank yourself, as this may spread the contamination further into the fuel system. Professional removal ensures the issue is handled safely and correctly.
If you’ve mistakenly put AdBlue into your diesel tank, Wrong Fuel Specialists can resolve it quickly and efficiently—avoiding unnecessary delays and expensive garage repairs. We will safely drain and flush the system to get you back on the road as soon as possible.Â
AdBlue Removal Service
At Wrong Fuel Specialists, we provide a complete on-site solution for AdBlue contamination, using specialist fuel recovery equipment to handle the issue safely and efficiently.
When we attend your vehicle, our technicians will:
- Safely drain the contaminated diesel and AdBlue mixture
- Thoroughly flush the entire fuel system
- Replace affected fuel filters if required
- Ensure all traces of AdBlue residue are fully removed
This process helps prevent corrosion, blockages, and expensive long-term engine damage.
Nationwide 24/7 Call-Out: Our mobile teams operate across mainland UK and can reach you at the roadside, at home, or at the forecourt. In most cases, we’ll have you back on the road quickly and safely.
No Towing Needed: There’s no requirement for costly recovery or dealership visits—we resolve the issue on-site in the majority of cases.
FAQs About AdBlue
Answers to common questions about our engine repair process.