# Small amount of AdBlue in diesel tank | the straight answer > Small amount of AdBlue in diesel tank: Still a drain, however small the amount. Mobile drain, UK-wide. Call 01293 248666. - URL: https://adblueinfuel.co.uk/asked/small-amount-of-adblue-in-diesel/ - Focus: small amount of adblue in diesel tank - Updated: 2026-09-28 - Phone: 01293 248666 (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. --- ## Small amount of AdBlue in diesel tank Short answerSmall amount of AdBlue in diesel tank — a small amount is still a drain. There is no safe dilution ratio for AdBlue in diesel — it does not dissolve into the fuel, it separates and sinks to the bottom of the tank, which is exactly where the fuel pickup sits. This is the single most misunderstood question in the category, and the wrong answer is everywhere online. "It was only a litre in a full tank" sounds like a dilution argument, and dilution is how petrol-in-diesel behaves. AdBlue is not miscible with diesel. A litre does not become a harmless fraction; it becomes a litre of concentrated urea solution sitting on the floor of the tank, first in line to be drawn into the pump. 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They are variants of a single intent, so they get a single page rather than one page each. **At a glance** | The question | A small amount of AdBlue in the diesel tank | Short answer | Still a drain, however small the amount | What we do | AdBlue contamination draining is the entire service: AdBlue in a fuel tank, or something else in the AdBlue tank. Drained, flushed and disposed of, mobile, from just £89 call-out fee. | Helpline | 01293 248666, 24 hours ## Small amount of AdBlue in diesel tank — what actually happens next ## The sequence - Do not turn the key. Do not press start. Ignition alone can prime the pump on many common-rail cars. - Do not move the vehicle under its own power, and do not put it in gear. - If you are on a forecourt, apply the handbrake and tell the station staff. - Note roughly how much AdBlue went in and how much diesel was already in the tank. - Call 01293 248666. Quantity and whether the engine ran are the two questions that set the job. A technician drains the tank completely, catches the settled urea layer separately, flushes the tank and feed lines with clean diesel, replaces the fuel filter, refills with enough fuel to run, purges the lines and runs the engine under observation before signing off. ### The full guide AdBlue in diesel ## Where this is answered by town ### By area A small amount of AdBlue in the diesel tank — Appleby-in-WestmorlandA small amount of AdBlue in the diesel tank — BoroughbridgeA small amount of AdBlue in the diesel tank — Chorley ### Other questions people actually ask AdBlue in the diesel tankWhat happens if you put AdBlue in the diesel tankAccidentally put AdBlue in the diesel tankAdBlue in diesel tank repair costDoes AdBlue mix with diesel?Diesel in the AdBlue tankAdBlue in a petrol tankDraining AdBlue out of a fuel tankAdBlue in the diesel tank and the engine was startedAdBlue specialist near mePetrol in the AdBlue tank ## 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 This site is published by Forecourt Assist, which operates AdBlue in Fuel. 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. The group, Fuel Fixer International, is owned by Stockbridge Capital Holdings. Reference: Selective catalytic reduction (Wikipedia). ## Across the Fuel Fixer network Misfuel DoctorForecourt AssistMotor ServicingWrong FuelEvery 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.