AdBlue in Diesel Tank

January 14, 2026

Oh No! Put AdBlue in Your Diesel Tank? Here’s What to Do Next

adblue in diesel tank rescue nationwide

It happens to the best of us. You’re at the pump, distracted or in a rush, and suddenly you realize the AdBlue nozzle has ended up in the diesel filler neck.


While AdBlue is essential for your exhaust system, it is catastrophic for your engine if it’s mixed with fuel. If you’ve just made this mistake, stop what you are doing immediately.


🚨 The Golden Rule: DO NOT Start the Engine


If you haven't turned the key yet, don't. If you have, turn it off right away.


AdBlue is not a fuel; it is a water-based urea solution. Unlike diesel, it is non-combustible and highly corrosive to engine components. Once it enters the fuel lines, it can crystallize, causing thousands of pounds in damage to your fuel injectors, filters, and high-pressure pumps.


Why AdBlue is Deadly for Diesel Engines


Crystallization: As soon as AdBlue dries or heats up, it forms hard crystals that block fuel injectors.

Corrosion: The urea solution is corrosive to copper and other metals found inside your engine’s fuel system.

Water Contamination: Diesel engines cannot compress or combust water-based liquids, leading to potential "hydro-locking" and engine failure.


How We Fix It


At Misfuelled Car Fixer, we specialize in getting you back on the road without the dealership price tag. Our mobile technicians come directly to your location (home, roadside, or petrol station) to perform a professional fuel drain.

  1. Drain: We completely drain the contaminated mixture from your tank.
  2. Flush: We flush the entire fuel system with fresh diesel to ensure no urea crystals remain.
  3. Replenish: We provide enough fresh diesel to get you moving again.
  4. Test: We run diagnostics to ensure your engine is safe to start.


Need Help Right Now?


Don't risk a permanent engine breakdown. Our specialist team is standing by to help you recover your vehicle safely and affordably.


📞 Call Misfuelled Car Fixer Now: 0330 122 6640


Quick Tip: If you're still at the petrol station, inform the cashier. They can often provide cones to mark your car as broken down while you wait for our technician to arrive.