# AdBlue in Fuel — a service by Forecourt Assist > The UK authority on AdBlue and SCR contamination. 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 why AdBlue in the fuel tank and fuel in the AdBlue tank are > two completely different failures with completely different costs. Phone: 01295 380724 (From just £89 call-out fee, 24 hours, UK-wide, mobile) Publisher: AdBlue in Fuel is 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. Fuel Fixer International is owned by Stockbridge Capital Holdings. Author: Rambo S, Wrong Fuel Expert, Fuel Fixer International — https://forecourtassist.co.uk/experts/rambo-s/ Rating: 4.8/5 from 2,190 Trustpilot reviews. Most common criticism: price. Answered with a £89 call-out and a quote before travel. Trademark: AdBlue is a registered trademark of the Verband der Automobilindustrie (VDA). AdBlue in Fuel is an independent service and is not affiliated with, endorsed by or licensed by the VDA. The name is used descriptively to identify the product this service relates to. ## The severity model - AdBlue in diesel — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-diesel/ - AdBlue in the diesel tank — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-the-diesel-tank/ - AdBlue in petrol — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-petrol/ - AdBlue in the petrol tank — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-the-petrol-tank/ - AdBlue in the screen wash tank — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-the-screen-wash-tank/ - AdBlue in the engine oil — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/adblue-in-the-engine-oil/ - AdBlue in the coolant tank — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/adblue-in-the-coolant-tank/ - AdBlue spilled on paintwork — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-spilled-on-paintwork/ - AdBlue in the wrong filler — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-in-the-wrong-filler/ - Diesel in the AdBlue tank — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/diesel-in-the-adblue-tank/ - Petrol in the AdBlue tank — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/petrol-in-the-adblue-tank/ - Screen wash in the AdBlue tank — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/screen-wash-in-the-adblue-tank/ - Water in the AdBlue tank — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/water-in-the-adblue-tank/ - Tap water in the AdBlue tank — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/tap-water-in-the-adblue-tank/ - Oil in the AdBlue tank — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/oil-in-the-adblue-tank/ - Coolant in the AdBlue tank — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/coolant-in-the-adblue-tank/ - Wrong AdBlue — non ISO 22241 fluid — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/wrong-adblue-non-iso-22241/ - Contaminated AdBlue — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/contaminated-adblue/ - Expired AdBlue — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/expired-adblue/ - Overfilled AdBlue tank — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/overfilled-adblue-tank/ - AdBlue warning light — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/adblue-warning-light/ - AdBlue countdown and no restart — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-countdown-no-restart/ - AdBlue limp mode — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-limp-mode/ - AdBlue system fault — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-system-fault/ - AdBlue crystallisation — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-crystallisation/ - AdBlue tank drain — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-tank-drain/ - AdBlue system flush — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-system-flush/ - Blocked AdBlue injector — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/adblue-injector-blocked/ - AdBlue pump failure — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/adblue-pump-failure/ - Frozen AdBlue — recoverable (Recoverable): Normally put right by a drain and flush, provided the engine has not been run. https://adblueinfuel.co.uk/frozen-adblue/ - NOx sensor fault — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/nox-sensor-fault/ - SCR catalyst damage — component-risk (Component risk): Frequently needs SCR component work rather than a drain. Quoted before a technician travels. https://adblueinfuel.co.uk/scr-catalyst-damage/ - AdBlue system reset — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-system-reset/ - AdBlue level sensor fault — likely-recoverable (Likely recoverable): Usually resolved by a drain and flush, with a fluid-quality check afterwards. https://adblueinfuel.co.uk/adblue-level-sensor-fault/ ## Severity note, verbatim £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. ## Symptoms — entered from the dashboard, not the diagnosis - AdBlue warning light is on: https://adblueinfuel.co.uk/symptoms/adblue-warning-light-on/ - A countdown to no restart is showing: https://adblueinfuel.co.uk/symptoms/adblue-countdown-showing/ - The engine will not restart: https://adblueinfuel.co.uk/symptoms/engine-will-not-restart/ - Power loss or limp mode: https://adblueinfuel.co.uk/symptoms/power-loss-and-limp-mode/ - White crystal deposits on or under the vehicle: https://adblueinfuel.co.uk/symptoms/white-crystal-deposits/ - The AdBlue gauge reads wrong: https://adblueinfuel.co.uk/symptoms/adblue-gauge-reads-wrong/ - The fault only appears in cold weather: https://adblueinfuel.co.uk/symptoms/fault-only-in-cold-weather/ - You have just put the wrong fluid in: https://adblueinfuel.co.uk/symptoms/wrong-fluid-just-added/ - A smell of ammonia: https://adblueinfuel.co.uk/symptoms/ammonia-smell/ - Failed emissions or an MOT advisory: https://adblueinfuel.co.uk/symptoms/failed-emissions-at-mot/ - A dosing or SCR fault code has been read: https://adblueinfuel.co.uk/symptoms/dosing-or-scr-fault-code/ - The light came on after a top-up: https://adblueinfuel.co.uk/symptoms/light-came-on-after-a-top-up/ ## Explained - SCR vs DPF: https://adblueinfuel.co.uk/explained/scr-vs-dpf/ - ISO 22241: https://adblueinfuel.co.uk/explained/iso-22241/ - Driver inducement: https://adblueinfuel.co.uk/explained/driver-inducement/ - What AdBlue actually is: https://adblueinfuel.co.uk/explained/what-is-adblue/ - How much AdBlue a vehicle uses: https://adblueinfuel.co.uk/explained/adblue-consumption/ - AdBlue storage and shelf life: https://adblueinfuel.co.uk/explained/adblue-storage-and-shelf-life/ ## Vehicle classes - Cars: https://adblueinfuel.co.uk/classes/car/ - Vans: https://adblueinfuel.co.uk/classes/van/ - Pickups: https://adblueinfuel.co.uk/classes/pickup/ - HGVs: https://adblueinfuel.co.uk/classes/hgv/ - Buses and coaches: https://adblueinfuel.co.uk/classes/bus-and-coach/ - Motorhomes: https://adblueinfuel.co.uk/classes/motorhome/ - Agricultural and plant: https://adblueinfuel.co.uk/classes/agricultural-and-plant/ ## Machine-readable - https://adblueinfuel.co.uk/api/services.json - https://adblueinfuel.co.uk/api/areas.json - https://adblueinfuel.co.uk/api/answers.json - https://adblueinfuel.co.uk/api/symptoms.json - https://adblueinfuel.co.uk/api/network.json - https://adblueinfuel.co.uk/api/mcp.json - Markdown twin of every page: append .md to the path without its trailing slash - https://adblueinfuel.co.uk/sitemap_index.xml ## The network - Forecourt Assist — https://forecourtassist.co.uk - Fuel Fixer — https://fuelfixer.co.uk - Fuel Fixer Scotland — https://fuelfixer.scot - Misfuel Doctor — https://mis-fueldoctor.co.uk - Wrong Fuel — https://wrongfuel.co.uk - AdBlue in Fuel — https://adblueinfuel.co.uk - Motor Servicing — https://motorservicing.co - Stockbridge Capital Holdings — https://stockbridgecapitalholdings.com - Petrol in Diesel — https://petrolindiesel.co.uk - Diesel in Petrol — https://dieselinpetrol.co.uk - Fuel Drain UK — https://fueldrain.uk - Mobile Fuel Drain — https://mobilefueldrain.co.uk - Misfuel Rescue — https://misfuelrescue.co.uk - Forecourt Rescue — https://forecourtrescue.co.uk - Fuel Doctor Fleet — https://fueldoctorfleet.co.uk - Wrong Fuel Assist — https://wrongfuelassist.co.uk - Fuel Fixer Fleet — https://fuelfixerfleet.co.uk - Contaminated Fuel — https://contaminatedfuel.co.uk - HGV Fuel Drain — https://hgvfueldrain.co.uk - Fuel Fixer Ireland — https://fuelfixer.ie - SCR Specialists — https://scrspecialists.co.uk Group directory: https://forecourtassist.co.uk/network/