# AdBlue in the screen wash tank | what to do now > AdBlue in the screen wash tank: Recoverable. AdBlue in the screen wash tank is the least serious version of this mistake. Do not use… - URL: https://adblueinfuel.co.uk/adblue-in-the-screen-wash-tank/ - Focus: adblue in the screen wash tank - Updated: 2026-09-22 - Phone: 01295 380724 (From just £89 call-out fee) - Publisher: AdBlue in Fuel — a service by Forecourt Assist — Forecourt Assist is a trading name of Fuel Fixer Ltd, company no 08520551, registered at Fairway House, Portland Road, East Grinstead, RH19 4ET, a company of Fuel Fixer International. --- ## AdBlue in the screen wash tank Short answerAdBlue in the screen wash tank is the least serious version of this mistake. Do not use the washers. Drain the bottle, flush it with clean water and refill with screen wash — call 01295 380724 if you would rather it was done properly. Nothing mechanical is at risk here, but urea sprayed on warm glass dries to a white crystalline film that smears badly and is stubborn to remove, and the washer pump, jets and non-return valve will hold residue. AdBlue is also mildly aggressive to some plastics and to the aluminium trim and bare metal it runs onto around the scuttle and wiper arms. Call 01295 380724 From just £89 call-out fee ## AdBlue in the screen wash tank — the severity verdict **Key facts** | Severity | Recoverable Normally put right by a drain and flush, provided the engine has not been run. | What went where | AdBlue in the screen wash tank | Direction | AdBlue into somewhere else | Typical cost | £89–£160 typical total, from a £89 call-out | Time on site | About 30 minutes | Call-out | From just £89 call-out fee | Helpline | 01295 380724, 24 hours ## What to do right now - Do not operate the washers, and do not use the headlight washers if fitted. - Drive is fine — this has no effect on the engine or the SCR system. - Drain the bottle, flush twice with clean water, run clean water through the jets, then refill with screen wash. ## What a technician actually does Bottle drained and flushed, the pump and lines run through with clean water until no residue shows, jets cleared, system refilled with screen wash, and any crystallised residue on glass and paint removed with water. ## Why this is not the same job as the other direction This is contamination of the fuel side. The SCR system itself is untouched, which is why this direction is the recoverable one — provided the engine has not been run. Starting it is what turns a drain into pump and injector work. ## Common questions ### Does this affect my SCR system or the warning light? No. The screen wash bottle and the AdBlue tank are entirely separate. Your AdBlue level and SCR system are unaffected. ### I already sprayed it on the windscreen. Is the glass damaged? Glass itself is not damaged. The white film is dried urea and it comes off with water and a little patience. Get it off the paint and wiper arms promptly — urea attacks aluminium and bare steel. ### Can I just top it up with screen wash and carry on? You will still be spraying urea for a long time, because the bottle, pump and lines are full of it. Flush it properly. ## What customers say 4.8 out of 5 from 2,190 Trustpilot reviews. What reviewers mention most is that the technician stayed calm and professional with a driver who was embarrassed and stressed, and that somebody arrived when they said they would. The most common criticism is price. People do not expect a wrong-fluid job to cost what it costs, and that is a fair complaint to publish rather than bury. The answer is the From just £89 call-out fee, a quote given on the phone before a technician travels, and being told when a job cannot be done at the roadside rather than after somebody has arrived and charged for the visit. ### Related AdBlue problems AdBlue in dieselAdBlue in the diesel tankAdBlue in petrolAdBlue in the petrol tankAdBlue in the engine oilAdBlue in the coolant tankAdBlue spilled on paintworkAdBlue in the wrong filler ### Start from a symptom instead AdBlue warning light is onA countdown to no restart is showingThe engine will not restartPower loss or limp modeWhite crystal deposits on or under the vehicleThe AdBlue gauge reads wrong ### By vehicle class CarsVansPickupsHGVsBuses and coachesMotorhomesAgricultural and plant ### Where we cover AdBlue in the screen wash tank in Belle Isle LeedsAdBlue in the screen wash tank in CaerphillyAdBlue in the screen wash tank in Craven ArmsAdBlue in the screen wash tank in Everton Liverpool ## Who you are dealing with Work booked through AdBlue in Fuel is carried out by Fuel Fixer Ltd, company no 08520551, registered at Fairway House, Portland Road, East Grinstead, RH19 4ET, trading as Forecourt Assist and part of Fuel Fixer International, which is owned by Stockbridge Capital Holdings. Reference: Urea (Wikipedia). ## Across the Fuel Fixer network Fuel Fixer IrelandMisfuel DoctorDiesel in PetrolFuel Doctor FleetAdBlue in Fuel is a service by Forecourt Assist, a brand of Fuel Fixer International, owned by Stockbridge Capital Holdings. The full group directory is at forecourtassist.co.uk/network.