Put Screenwash in Your AdBlue Tank? 24/7 Emergency Mobile Drain
DO NOT TURN THE IGNITION ON.
Pouring screenwash into your AdBlue filler neck is a surprisingly common mistake due to their close proximity under the bonnet or fuel flap. However, screenwash detergents and chemicals will rapidly destroy your diesel vehicle's Selective Catalytic Reduction (SCR) system if circulated.
Call 07917 952153 immediately for rapid 60–90 minute emergency mobile extraction across the UK.
3 Immediate Steps to Prevent Engine Lockout
-
Keep the Ignition OFF: Do not start the car or turn on the dashboard lights. This stops the electronic AdBlue pump from priming and circulating contaminated fluid into the SCR system.
-
Leave the Cap Closed: Prevent any further foreign debris or dirt from entering the neck.
-
Call The Wrong Fuel Team: Our SPA-certified technicians will arrive directly on-site at forecourts, roadsides, homes, or workplaces with specialist extraction equipment.
Why Screenwash Destroys AdBlue (SCR) Systems
AdBlue is pure 32.5% high-purity urea mixed with deionized water. Screenwash, on the other hand, contains alcohols (such as ethanol and isopropanol), colorants, and heavy synthetic detergents.
-
Catalyst Poisoning: Detergents foul the precious metals inside the exhaust catalytic converter.
-
Injector Crystallization: Chemical additives cause rapid buildup inside the heated AdBlue dosing injector, completely blocking fluid flow.
-
Non-Start Engine Lockout: Modern diesel ECU computers automatically prohibit the engine from restarting once sensor limits detect non-compliant fluid quality in the SCR module.
Our On-Site 4-Step Recovery Process
-
Step 1: Spark-Free Liquid Extraction: We bypass standard fuel lines using specialized suction units to completely empty the contaminated AdBlue tank.
-
Step 2: Tank & Sensor Flushing: We flush the reservoir and internal level sensor nodes with pure deionized fluid to eliminate detergent residue.
-
Step 3: Line Inspection: We check the supply lines and injector valves to ensure no cross-contamination entered the dosing feed.
-
Step 4: Fresh AdBlue Prime & Reset: We supply fresh, ISO 22241 certified AdBlue, clear fault codes, and test the system so you can drive away safely.
Frequently Asked Questions
What happens if you accidentally put screenwash in your AdBlue tank?
Screenwash contains alcohols, detergents, and dyes that react aggressively with the SCR system. If driven, it causes crystallization, destroys the delicate AdBlue injector, and ruins the SCR catalyst, leading to thousands of pounds in repairs.
Can I drive if I put screenwash in my AdBlue tank?
No. Keep the ignition completely off. Turning the ignition on triggers the AdBlue priming pump, circulating the corrosive screenwash mixture directly into the heater unit and SCR system.
How do you remove screenwash from an AdBlue tank?
Our mobile technicians use specialized suction pumps to completely drain the contaminated AdBlue tank, flush the system with deionized fluid, inspect the lines, and refill it with fresh ISO 22241 compliant AdBlue on-site.
Contact
I'm always looking for new and exciting opportunities. Let's connect.