🚨 AdBlue in Diesel Tank? Stop!
Immediate Action Guide
Misfuelled Car Fixer: Professional AdBlue In Diesel Tank Expert
Putting AdBlue (Diesel Exhaust Fluid or DEF) into your diesel fuel tank is a
serious and potentially very expensive mistake. AdBlue is a water and urea solution, and it is
highly corrosive to the components of a diesel fuel system.
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The most crucial rule is:
🛑 DO NOT START THE ENGINE! 🛑 If the engine has not been started, you can prevent major damage.
What to Do RIGHT NOW (Immediate Steps)
If you have just put AdBlue into your diesel fuel filler neck, follow these steps immediately:
- Do NOT Turn the Key: Even turning the ignition to the "on" position or unlocking the doors in some modern vehicles can activate the fuel pump and circulate the contamination, causing widespread damage.
- Do NOT Start the Engine: Starting the engine will immediately draw the corrosive AdBlue/diesel mixture through the fuel lines, pump, and injectors, guaranteeing thousands in repair bills.
- Put the Vehicle in Neutral and Secure It: Use the parking brake. If you must move the car, push it manually to a safe spot.
- Call Professional Assistance: Contact our AdBlue contamination specialist service. Do not attempt to fix this yourself.
Engine NOT Started
Professional fuel tank drainage, flushing of fuel lines. Minimal damage (mainly labor for drainage/flush). Cost starts FROM £349.00.
Engine HAS Been Started
Professional fuel tank drainage, fuel system flush, fuel filter flush. Potential full fuel system replacement (pump, lines, injectors, filter, etc.). The cost is higher for this scenario.
Why Is AdBlue So Dangerous in the Diesel Tank?
AdBlue is roughly two-thirds de-ionised water and one-third urea. When it mixes with diesel, it creates a milky, crystalline, and highly corrosive substance.
- Corrosion: The solution immediately begins to attack sensitive metal components in the fuel system.
- Crystallisation: When heated, the mixture forms urea crystals that will clog the fuel pump, filter, and injectors.
- Fuel Pump Failure: High-pressure fuel pumps are extremely sensitive to contamination; AdBlue will cause immediate internal damage and failure.
How to Prevent This Mistake
Modern vehicles and jerry cans are designed to make this difficult, but mistakes happen.
- Dedicated Filler Necks: AdBlue filler necks are generally smaller than the diesel filler and are often located next to the diesel cap, or sometimes in the boot/trunk or under the bonnet.
- Colour Coding: AdBlue caps are almost always blue, while diesel caps are typically black or green.
- Take Your Time: Always double-check the cap label before dispensing. Never fill up when you are distracted or in a hurry.
Why You Must Call a Specialist Immediately
If you put AdBlue in your diesel tank, our specialized wrong fuel recovery service is the only way to minimize the potential cost, especially if you have not started the engine:
- Engine NOT Started: The wrong fuel technician can perform a fuel drain. The cost is primarily the service fee, generally ranging from £349.00 (depending on the vehicle, location, and time of day).
- Engine HAS Been Started: The highly corrosive mixture has circulated. In this case, the
misfuelled car fixer technician can drain the fuel tank, flush the fuel system and refill with some diesel.
