---
title: AdBlue in a Diesel Tank Longhill? Next Steps
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/longhill-durham/
location: Longhill
county: Durham
latitude: 54.673420
longitude: -1.207700
service: AdBlue in a Diesel Tank
updated: 2026-10-27
---

# What Now? AdBlue in the Diesel Tank in Longhill

Has your engine turned over since the AdBlue was put in? This single point settles nearly everything about what comes next.

Not run yet? Then keep the vehicle like that, whether the vehicle sits — Longhill or Old Town.

Leave your motor and your ignition off and phone 0333 366 0103; it is normally a drain and a thorough flush, done where your car is around Longhill.

If it has run, stop as soon as it is safe then switch off.

It is a bigger job, though stage one does not change.

Match what happened to one of the list below, anywhere in Durham you happen to be.

## Longhill forecourt: AdBlue in a diesel at the pump

Picture it: stood by the petrol pump, gripping the nozzle, you realise the cap you opened was not the correct one.

Perhaps you're at the M&G solid fuels, perhaps at the Tesco Extra, possibly somewhere else around Longhill.

Put simply: no better place exists to discover it.

The AdBlue is inside that tank and nowhere else. Nothing has sucked it in.

Freeing the petrol pump is no excuse to run it — and so don't get back in.

Three jobs: a push into a space with the attendants helping, the bottle kept, and a ring to us from where you stand.

Draining it there at the petrol pump is possible when it can't be moved, since the equipment is explosion-proof.

## AdBlue in your diesel tank at home around Longhill

The warning light had been on for days.

Only at the recycling bin, the empty bottle in hand, did you glance back at the cap you'd opened at the driveway.

Houses just off Sarah Street get caught out as much as anywhere else.

Meaning? Provided your vehicle has not moved since, it's second to the pump case.

AdBlue does not mix with diesel; it sinks to the bottom of the tank and waits there. Overnight does not change that.

Your move: the keys in the house, so nobody takes the car anywhere at breakfast. After that, ring.

Out in Bellevue or here in Longhill, the draining happens at your driveway.

The pumping kit works quietly enough not to disturb the neighbours at night.

## Longhill: set off with AdBlue in a diesel?

A short way beyond filling up, your engine began misbehaving: roughness, smoke, lost power, warnings on the dash.

Anywhere along Casebourne Road or else on the road towards Durham — under 25 miles away.

What it means: the fuel system has sucked the AdBlue in.

Mileage sets how far it gets: filter and pipework to begin with, then the injection pump and every injector.

Every restart, like every mile, carries it deeper.

What to do: pull over where it is safe to do so and switch off.

Exit by the next junction — not the services beyond — if you are on the A1(M), under 15 miles from Longhill.

Do not restart the vehicle to see if it has cleared; it will not have.

Let us know the mileage driven when you call.

## AdBlue in the wrong tank of a hire, lease or company car

A week back, the car was unknown to you.

Unknown to you, the two inlets sit next to each other here — not like your own vehicle, which has none or keeps it in another spot.

Anywhere you are in Durham, any driver can slip up.

Meaning? Whatever case above counts here — run or unrun — plus one further stage.

Plenty of hire and company agreements want the owner to approve work on the vehicle.

What to do: call the hire firm or your fleet manager first, then us. That is quicker settled before our technicians arrive than after.

Leave the car off as the reply arrives, even if you're parked at Hartlepool or near Belle View Community Sports & Youth Centre.

## Longhill: unsure whether it was AdBlue in your diesel tank?

Now and then, "I think so" is all anyone can honestly say.

What cap was taken off, you can't say; meanwhile the bottle feels lighter than it ought to, and ammonia lingers by your filler.

It might have been at a friend's drive in Hartlepool, or in a rush by St Aidan's Church of England Memorial Primary School at the school run.

The point: your motor is not harmed by some AdBlue spilled on the outside.

If it is inside the diesel tank, though, that changes.

Turning on the car won't tell you which, and if there is AdBlue in that tank it would suck it in.

Next: act as though it went in, and keep the motor off.

Ring with the details: we would rather confirm a clean tank than empty one once your engine has run.

## Every AdBlue drain in Longhill shares these stages

Whichever situation you are in, the job starts the same way.

Three things come once our technicians arrive — on a filling station, a drive, a street beside 2nd-Hand Central or the car park outside Belle View Social Club: the fluid, the quantity, and whether the motor has been started.

Replies shape the work; the quote follows on the call whilst no one has set off yet.

Then that tank is drained and the fuel system cleaned thoroughly, which matters more with AdBlue than with petrol: AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it doesn't rinse out on its own.

Then comes the fuel filter — flushed, or replaced where needed — then fresh diesel, and a test of your car.

Not started? Then roughly half an hour once we are there covers most jobs.

Starting it comes last.

With new diesel in, it runs while our technicians make sure it's running correctly, and then we head off.

Lasting damage is very rare if it is noticed early, and the entire job is done where the car is.

For your insurer: the engineer's report and the VAT invoice. For you: payment on the day, no money in advance.

Dig out your insurance while we arrive: misfuelling cover comes built into many policies.

## About Longhill and where it is

Longhill is a coastal suburban area in County Durham, situated near the mouth of the River Tees and close to the nearby places of Bellevue, Stranton, and Foggy Furze. Longhill has a relatively low elevation of around 7 metres above sea level and is characterised by predominantly terraced housing. Longhill is located approximately 16.6 miles from the city of Durham and some 223.3 miles north of London.

## AdBlue drains across Durham, Longhill included

Throughout TS postcodes, the vans serving Longhill — a residential suburb — work nearby towns as well, Stranton and Foggy Furze among them.

Quickest of all: a TS25 1 postcode for your location.

Whether the vehicle is on a lay-by on the way to Stranton Green or in a car park in the middle of Longhill, it does not need to move.

We drain the car where it sits.

Guessing won't help beside St Aidan's Church, close to a border or anywhere hard to describe; ring and check.

## Your scenario, summed up

Unstarted? Leave it off then phone.

Already run: stop, switch off and ring. Either way, Petrol in Diesel takes it from there in Longhill and anywhere around Durham on 0333 366 0103.
