Water in the AdBlue tank in Thornbury, drained on the spot
Keys out, bonnet shut, hazards on if you are at the roadside. Water in the AdBlue tank in Thornbury is drained on site by a local drainer: pumped out, flushed and refilled in about 1 to 3 hours. Call-out from £89 — call 01295 380724 and you get the figure before anyone drives to you.
AdBlue is a precise mix. Extra water takes it out of specification and the exhaust treatment system logs a fault.

Water in the AdBlue tank in Thornbury: the facts
| Place | Thornbury |
|---|---|
| Area | Bristol |
| Postcodes | BD3, BS12, BS35 |
| Job | Water in the AdBlue tank |
| Price | Call-out from £89, full price quoted first |
| Time on site | 1–3 hours |
| Who attends | A local drainer with a pump and sealed tank |
| Phone | 01295 380724, 24 hours |
On arrival in Thornbury: what happens next
They bring the fuel. Once the tank is empty and the lines are flushed, the drainer adds enough of the correct fuel to get the engine running and to reach a filling station, then checks for warning lights before handing the keys back.
Five things to ask a drainer before they set off
You are going to pay for the job, so it is worth two minutes on the phone first. These are the questions that separate a straight quote from a surprise at the roadside.
- How long until you reach me in Thornbury?
- Is the vehicle over 3.5 tonnes, and does that change the price?
- Is there an extra charge at night or at the weekend?
- What is the total, not just the call-out, if it is a straight drain?
- Do you take card payment at the roadside?
What to do right now
- Leave the ignition alone — on many cars even unlocking it powers the fuel pump.
- Push the car clear of the pump if needed, with someone steering and the engine off.
- Call 01295 380724 and give the fuel, the amount and your exact location.
- Ask for the whole price, not just the call-out, and agree it.
- The drainer drains the tank into a sealed container and flushes the lines.
- Fresh fuel goes in, the engine is started and the waste fuel leaves with the drainer.
Postcodes covered around Thornbury
Coverage takes in postcode districts BD3, BS12, BS35 in Bristol. If you are just outside, call anyway — the drainer covering the next area will usually come.
Where a drain can happen around Thornbury
Forecourt staff in Thornbury see this every week and will usually let the vehicle sit in a bay until the drainer arrives. Otherwise the drainer can work on your drive, at your workplace or at the kerb outside.
The same van covers Rudgeway, Almondsbury, Barkerend and Bradford Moor, which usually keeps arrival times short across this side of Bristol.
What a drain costs in Thornbury
| What happened | What the drainer does | Price | Time on site |
|---|---|---|---|
| Caught at the pump | Pump out, flush, clean fuel in | Call-out from £89 | 45–90 mins |
| Ignition turned on | Pump out and flush the filter | Given on the phone | 1–2 hours |
| Driven away from the forecourt | Pump out, flush, pump and injector checks | Given on the phone | Up to 3 hours |
| Vehicle stopped running | Pump out, flush and fault-finding | Given on the phone | Depends on the fault |
| AdBlue went in the wrong tank | Complete drain and flush | Quoted per vehicle | Up to 3 hours |
| Price ranges | The call-out, then the drain | Call-out £89–£199 · drain £199–£1,999 | — |
Other drains in Thornbury
Drainers nearby
More of Bristol
From the drainer's notebook
Fuel Fixer, the company behind Wrong Fuel Drain, holds a rating of 4.8 out of 5 from 2,190 reviews on Trustpilot, on a profile claimed since 2017.
Across recent reviews, the themes customers raise most often are staff who stay polite, professional and reassuring during what is a stressful situation, and how quickly a technician arrives and gets the vehicle back on the road in Thornbury.
The most common criticism is price. Some customers have felt the cost of an emergency drain was steep for a job that takes under two hours, and that is fair comment on an emergency call-out. It is why the misfuel call-out fee now starts at just £89 and why the full figure is quoted on the phone before a technician sets off — so nothing about the cost is a surprise at the roadside.
Common questions
I only put a little in — do I still need a drain?
In most modern diesels, yes. Even a small amount of petrol reduces the lubrication the pump depends on. A drain is cheap compared with a pump.
Can I drive to a garage with water in the adblue tank?
No. Every mile pushes the fuel further through the pump and injectors. A drainer comes to you, so there is no reason to move the car under its own power.
Will you bring fuel?
Yes. The drainer adds enough of the correct fuel to start the engine and reach a filling station.
Will my engine be damaged?
Not if it has not been started. The wrong fuel sitting in the tank touches nothing that a drain cannot clear. Damage starts once it circulates.
Do I need to stay with the car?
Ideally yes, so the drainer can confirm what happened and hand the keys back. If not, agree access on the phone.
Do I need to move the car off the forecourt?
Only if it is blocking a pump. Push it into a bay with help and the engine off; the drainer can work there.
Who you are dealing with
Wrong Fuel Drain is a brand of Fuel Fixer Ltd (company number 08520551), a company of Fuel Fixer International, the multinational group behind this website. Fuel Fixer International is owned by Stockbridge Capital Holdings, a private equity group. Work is carried out by Fuel Fixer Ltd technicians under ISO 9001 and ISO 14001, with Environment Agency waste-carrier registration.
North of the border, Fuel Fixer Scotland runs the same service across every Scottish postcode.
Across the network
Fuel Fixer sites: Fuel Fixer · Misfuel Doctor · UK Wrong Fuel Repository · Fuel Fixer Scotland
Forecourt Assist sites: Forecourt Assist · AdBlue in Fuel · Wrong Fuel Cumbria · Wrong Fuel Teesside · Wrong Fuel Carlisle · Wrong Fuel Penrith · Wrong Fuel Keswick · Wrong Fuel Kendal · Wrong Fuel Workington · Wrong Fuel Maryport · Wrong Fuel Whitehaven · Wrong Fuel Newcastle · Wrong Fuel Gateshead · Wrong Fuel Sunderland · Wrong Fuel Durham · Wrong Fuel Darlington · Wrong Fuel Middlesbrough · Wrong Fuel Dumfries
Also in the group: Motor Servicing
Background reading: HMRC rebated fuel guidance. Service operated by Fuel Fixer, alongside Wrong Fuel, Fuel Fixer Scotland and Motor Servicing, part of Fuel Fixer International and owned by Stockbridge Capital Holdings.