Water in the diesel tank in Sawston Cambridge: a local drainer comes to you
Keys out, bonnet shut, hazards on if you are at the roadside. Water in the diesel tank in Sawston Cambridge is drained on site by a local drainer: pumped out, flushed and refilled in about 1 to 2 hours. Call-out from £89 — call 01295 380724 and you get the figure before anyone drives to you.
Water is heavier than diesel, so it sits at the bottom of the tank and reaches the pump first, stripping lubrication and stopping the engine.

Water in the diesel tank in Sawston Cambridge: the facts
| Neighbourhood | Sawston Cambridge |
|---|---|
| City | Cambridge |
| Postcodes | CB22 |
| Job | Water in the diesel tank |
| Price | Call-out from £89, full price quoted first |
| Time on site | 1–2 hours |
| Who attends | A local drainer with a pump and sealed tank |
| Phone | 01295 380724, 24 hours |
The drain itself, step by step in Sawston Cambridge
The job is quieter than people expect. Tank drained into the van, lines flushed, clean fuel added, engine started and watched for a few minutes. The waste fuel is logged and taken for licensed disposal, and you get a receipt showing what was done.
Five things to ask a drainer before they set off
A drainer should be happy to answer all of these on the phone. If they will not give a price before travelling, ring someone else.
- What is the total, not just the call-out, if it is a straight drain?
- Is the vehicle over 3.5 tonnes, and does that change the price?
- Will you check the filter and pump if the engine ran?
- How long until you reach me in Sawston Cambridge?
- Do you take card payment at the roadside?
What to do right now
- Don't press the start button or turn the key.
- Take a photo of the pump display: it shows the fuel type and the litres.
- Ring 01295 380724 and describe where the car is.
- Agree the price before booking — the call-out starts at £89.
- The drainer empties the tank and flushes the system where the car stands.
- They refuel, start the engine and check it before handing back the keys.
Sawston Cambridge postcodes
Drainers cover postcode district CB22, and the roads either side of them, across Cambridge.
Where you can be drained in Sawston Cambridge
The drainer comes to the vehicle wherever it is in Sawston Cambridge: pump lane, car park, driveway or kerb. Tell the operator exactly where you are on 01295 380724 — a postcode, a landmark or the name of the filling station — and they will give you an arrival window.
Nearby, drainers regularly attend Foxton Cambridge, Newton Cambridge, Hauxton Cambridge and Great and Little Shelford Cambridge as well.
The cost of a drain in Sawston Cambridge
| What happened | What the drainer does | Price | Time on site |
|---|---|---|---|
| Spotted at the pump, key never turned | Drain, flush, refuel, test start | From £89 call-out | Under 90 mins |
| Ignition on, or started briefly | Drain and filter flush | Quoted before travel | Around 1–2 hours |
| Drove off the forecourt | Drain, flush and a check of the pump | Quoted before travel | Up to 3 hours |
| Lost power or cut out | Drain, flush and diagnosis on site | Quoted before travel | Depends on findings |
| AdBlue went in the diesel | Tank and lines drained and flushed | 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 Sawston Cambridge
Drainers nearby
More of Cambridge
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 Sawston Cambridge.
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
Does insurance cover water in the diesel tank?
Many policies exclude misfuelling. Some breakdown cover and optional add-ons include it. Check your policy wording before assuming either way.
Can you drain a van or a lorry?
Vans, yes, routinely. Vehicles over 3.5 tonnes are quoted separately because of the volume involved.
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.
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.
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.
Can I pay by card?
Yes. Card payment is taken on site once the job is done.
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.