What happens if you put AdBlue in the diesel tank
What happens if you put AdBlue in the diesel tank — what happens depends entirely on one thing: whether the engine was started. Unstarted, nothing permanent happens and it is a drain. Started, AdBlue is pushed through the injection system, where it corrodes and seizes components.
AdBlue is an aqueous urea solution designed for the exhaust, not the engine. In the fuel system it does three things: it does not combust, it carries water into a system engineered to exclude it, and its urea content attacks aluminium, zinc, copper and mild steel. On a common-rail diesel the high-pressure pump is the first casualty, then the injectors.
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| The question | What happens if you put AdBlue in the diesel tank |
|---|---|
| Short answer | Nothing permanent, until the engine runs |
| 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 |
What happens if you put AdBlue in the 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
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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
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.
Reference: Urea (Wikipedia).
Across the Fuel Fixer network
AdBlue 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.