AdBlue in the engine oil
AdBlue in the engine oil is serious. Do not start the engine. Water-based urea in an oil gallery destroys the oil film on bearings and journals, and this needs a full oil-system flush rather than a drain. Call 01293 248666.
Engine oil carries a load-bearing film between bearing shells, journals, cam lobes and followers. Urea solution does not emulsify into oil in any useful way and it does not carry load. Run the engine and you are running plain bearings on water. Urea is also corrosive to the bearing overlay metals and to aluminium, and it will attack the oil cooler internals. This is not a drain-and-go job.
Call 01293 248666 From just £89 call-out fee
This is not a drain job, so it is not work we do. AdBlue in Fuel drains and flushes AdBlue contamination — AdBlue put into a fuel tank, or diesel, petrol, water, screenwash or oil put into the AdBlue tank. That is the whole service. AdBlue in the engine oil is an SCR system fault, and it is fixed by a garage or a franchised dealer with the right diagnostic tooling, not by draining a tank at the roadside.
The page below is here because the question gets asked constantly and the answers online are poor. It is reference material, not a sales page. There is no call-out price quoted for it, because we would not be the ones attending. If you are not certain which of the two you are looking at, call 01293 248666 and describe it — if it is a drain we will quote it, and if it is not we will say so and you will not be charged for the conversation.
AdBlue in the engine oil — the severity verdict
| Severity | Component risk Frequently needs SCR component work rather than a drain. Quoted before a technician travels. |
|---|---|
| What this is | AdBlue in the engine oil — an SCR system fault, not a contaminated tank |
| Who fixes it | A garage or franchised dealer with SCR diagnostic tooling |
| Do we do it? | No. AdBlue in Fuel drains AdBlue contamination only |
| Typical cost | £260–£600 at a garage — a guide figure, not our quote |
| If you are unsure | 01293 248666 — we will tell you which of the two it is |
What to do right now
- Do not start the engine under any circumstances.
- Do not crank it to 'see if it sounds alright'. Cranking is enough to circulate it.
- Call 01293 248666 and say how much went in and whether the engine has run since.
What a technician actually does
Oil and filter out, multiple flush cycles with fresh oil, sump and pickup strainer inspection, and a decision — made with you before it is taken — on whether the engine needs stripping for bearing inspection.
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
If the engine has not been started, is it recoverable?
Usually yes, with repeat oil flushes and a pickup strainer check. If it has been run, bearing inspection becomes a real possibility and that is engine work, not roadside work — you will be told that on the phone.
Can I just do an oil change myself?
A single drain leaves urea solution in the cooler, the galleries and the filter housing, because it is denser than oil and pools. Repeat flushing is the point.
Will this be covered by a warranty?
Misfuelling and wrong-fluid damage is normally excluded. Check your policy — some comprehensive insurance policies cover misfuelling as an add-on.
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
Start from a symptom instead
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: ISO 22241 — the AdBlue standard.
Across the Fuel Fixer network
These are sister brands of the same company, not unrelated sites. Forecourt Assist keeps the canonical list at forecourtassist.co.uk/network rather than duplicating it here.