AdBlue in petrol
AdBlue in petrol is unusual — petrol cars do not have AdBlue — but it happens with jerry cans and shared forecourt equipment. Do not start the engine and call 01293 248666. A drain and flush resolves it.
Petrol is lighter still than diesel, around 0.74 g/cm³, so AdBlue sinks even more decisively. Petrol injection systems run at lower pressure than common-rail diesel, so the mechanical risk to the pump is lower — but petrol fuel pumps are usually submerged in the tank, which means the in-tank pump assembly is sitting in urea solution rather than fuel.
Call 01293 248666 From just £89 call-out fee
AdBlue in petrol — the severity verdict
| Severity | Recoverable Normally put right by a drain and flush, provided the engine has not been run. |
|---|---|
| What went where | AdBlue in petrol |
| Direction | AdBlue into somewhere else |
| Typical cost | £190–£400 typical total, from a £89 call-out |
| Time on site | About 60 minutes |
| Call-out | From just £89 call-out fee |
| Helpline | 01293 248666, 24 hours |
What to do right now
- Do not turn the ignition on. In-tank petrol pumps prime on ignition, before you even crank.
- Do not move the car under power.
- Call 01293 248666 and mention that it is a petrol vehicle — the drain method differs.
What a technician actually does
Drain, flush with fresh petrol, inspect the in-tank pump assembly and sender for urea residue, replace the filter where the vehicle has a serviceable one, refill and run up.
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
Why would AdBlue be near a petrol car at all?
Almost always a shared jerry can, a van fleet with mixed vehicles, or a bottle left in the boot of a car that used to be a diesel.
Is a petrol engine more forgiving than a diesel here?
Mechanically the injection side is less fragile, yes. But the in-tank pump assembly sits in the contamination, so the tank still has to come out of service.
Does the catalytic converter get damaged?
Only if the engine is run long enough to pass unburnt contamination downstream. If it was never started, no.
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.
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Where we cover
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: NOx (Wikipedia).
Across the Fuel Fixer network
Every 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.