# AdBlue in fuel | UK AdBlue & SCR help > AdBlue in fuel: AdBlue is AUS 32, not a fuel. Wrong tank, wrong fluid or a warning light — call 01295 380724 for an honest severity verdict. - URL: https://adblueinfuel.co.uk/ - Focus: adblue in fuel - Updated: 2026-09-21 - 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 fuel Short answerAdBlue in fuel and fuel in AdBlue are two completely different failures. AdBlue in the diesel tank is usually recoverable by a drain and flush if the engine has not been run. Diesel or petrol in the AdBlue tank frequently needs SCR component work. Call 01295 380724. AdBlue is not a fuel. It is AUS 32 — 32.5% high-purity urea in 67.5% demineralised water, specified by ISO 22241 — dosed into the exhaust ahead of the SCR catalyst, where it decomposes to ammonia and converts NOx to nitrogen and water. It never enters the engine. That is exactly why putting it into the fuel tank, and putting fuel into it, cost such different amounts to put right. Call 01295 380724 From just £89 call-out fee ## The two directions of adblue in fuel **The severity split** | | What happened | Severity | What it means | AdBlue in the diesel tank | Recoverable | Water-based, denser than diesel, sinks rather than mixing. Drain and flush, if the engine has not been run. | Diesel or petrol in the AdBlue tank | Component risk | Hydrocarbon contamination of a precision dosing circuit. Frequently not a drain-and-go job. | Water or screen wash in the AdBlue tank | Likely recoverable | Dilution rather than poisoning. Drain, flush, and a fluid-quality check afterwards. £89 is the call-out. An AdBlue tank drain and flush is quoted on the phone before a technician travels. If the SCR system needs component replacement — dosing injector, pump, tank or catalyst — that is separate, and you will be told before any work starts. If this is a job we cannot fix at the roadside, we will tell you that on the phone rather than after we arrive. ## Start from the dashboard, not the diagnosis Most people arrive here with a warning light rather than a known mistake. The symptom pages branch on what you can actually see, end in a severity verdict and route you to the right answer. ### Symptoms 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 wrongThe fault only appears in cold weatherYou have just put the wrong fluid inA smell of ammoniaFailed emissions or an MOT advisoryA dosing or SCR fault code has been readThe light came on after a top-up ### All 34 AdBlue and SCR verticals AdBlue in dieselAdBlue in the diesel tankAdBlue in petrolAdBlue in the petrol tankAdBlue in the screen wash tankAdBlue in the engine oilAdBlue in the coolant tankAdBlue spilled on paintworkAdBlue in the wrong fillerDiesel in the AdBlue tankPetrol in the AdBlue tankScreen wash in the AdBlue tankWater in the AdBlue tankTap water in the AdBlue tankOil in the AdBlue tankCoolant in the AdBlue tankWrong AdBlue — non ISO 22241 fluidContaminated AdBlueExpired AdBlueOverfilled AdBlue tankAdBlue warning lightAdBlue countdown and no restartAdBlue limp modeAdBlue system faultAdBlue crystallisationAdBlue tank drainAdBlue system flushBlocked AdBlue injectorAdBlue pump failureFrozen AdBlueNOx sensor faultSCR catalyst damageAdBlue system resetAdBlue level sensor fault ### By vehicle class CarsVansPickupsHGVsBuses and coachesMotorhomesAgricultural and plant ### Explained SCR vs DPFISO 22241Driver inducementWhat AdBlue actually isHow much AdBlue a vehicle usesAdBlue storage and shelf life **At a glance** | Coverage | UK-wide, mobile | Helpline | 01295 380724, 24 hours | Call-out | From just £89 call-out fee | Verticals | 34 AdBlue and SCR contamination and fault types | Places | 1,674 UK towns and neighbourhoods | Rating | 4.8 / 5 from 2,190 Trustpilot reviews ## 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. ## 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: Diesel exhaust fluid (Wikipedia). ## Across the Fuel Fixer network Wrong FuelFuel Drain UKWrong Fuel AssistSCR SpecialistsEvery brand above belongs to Fuel Fixer International, owned by Stockbridge Capital Holdings. The directory lives on the operator's own site: forecourtassist.co.uk/network.