Diesel in the AdBlue tank in Guildford, drained on the spot
If the engine has not run, diesel in the adblue tank in Guildford is usually a clean drain with no lasting harm. Keep it that way — don't start it — and ring 01295 380724. The call-out is £89, the drainer brings everything, and most jobs are done in 1 to 3 hours.
What matters most is whether the fuel has moved beyond the tank. Diesel in the AdBlue tank contaminates the urea and can ruin the SCR dosing pump and injector, so it must come out before starting.

The short version: diesel in the adblue tank in Guildford
| Place | Guildford |
|---|---|
| Area | Surrey |
| Postcodes | GU1, GU2, GU3, GU4, GU5, GU6 |
| Job | Diesel 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 |
What to expect from the drainer in Guildford
The drainer parks up, checks the vehicle has not been started and makes the area safe with cones and a drip tray. The fuel is pumped out through the filler or the fuel line into a sealed tank on the van, the lines are flushed, a few litres of the right fuel go in, and the engine is started and run until it idles cleanly. The contaminated fuel leaves with them.
What to ask on the phone before a drainer travels to Guildford
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 much more if the engine has already been started?
- Can you work on the forecourt, or does the car need to be moved?
- How long until you reach me in Guildford?
- Is there an extra charge at night or at the weekend?
- 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 Guildford
Coverage takes in postcode districts GU1, GU2, GU3, GU4, GU5, GU6 in Surrey. If you are just outside, call anyway — the drainer covering the next area will usually come.
Forecourt, roadside or drive: where we drain in Guildford
Forecourt staff in Guildford 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.
Around Guildford, the busiest spots for call-outs tend to be Onslow Village, Worplesdon, Christmas Pie and Flexford.
How much it costs in Guildford
| What happened | What the drainer does | Price | Time on site |
|---|---|---|---|
| Engine never started | Tank drained, lines flushed, clean fuel added | From £89 call-out | 45–90 mins |
| Engine started, car not moved | Drain plus a flush of the filter and lines | Quoted on the phone | 1–2 hours |
| Driven a short way | Drain, flush, pump and injector check | Quoted on the phone | 1–3 hours |
| Driven until it stopped | Drain, flush and fuel-system diagnosis | Quoted on the phone | Assessed on arrival |
| AdBlue in the fuel tank | Full drain and flush of tank and lines | Quoted per vehicle | 1–3 hours |
| Price ranges | The call-out, then the drain | Call-out £89–£199 · drain £199–£1,999 | — |
Other drains in Guildford
Drainers nearby
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 Guildford.
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
The engine is running rough — is that the wrong fuel?
If it started shortly after filling up, very likely. Pull over when it is safe, switch off and call 01295 380724.
Does insurance cover diesel in the adblue tank?
Many policies exclude misfuelling. Some breakdown cover and optional add-ons include it. Check your policy wording before assuming either way.
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.
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.
What if I have already driven home?
Leave it on the drive with the engine off and call 01295 380724. The drainer can do the whole job at your house.
Do you work at night in Guildford?
Yes. Drainers work 24 hours a day, including weekends and bank holidays.
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.
Once the fuel is drained and you are moving again, Motor Servicing will service the car on your driveway rather than making you find a garage.
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: Environment Agency. 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.