AdBlue in the Diesel Tank in Hampstead? Keep It Switched Off
If AdBlue has got into the diesel tank, keep your motor off then keep the ignition off. Chemically, AdBlue is simply urea in water. Being water-based, it won't ignite and won't blend with diesel; trouble just starts when the pump starts drawing it. If your motor hasn't run yet, AdBlue in a diesel tank is normally drained and carefully flushed where the vehicle sits around Hampstead. No step comes before ringing 0333 366 0103.
Your next steps straight away, Hampstead: AdBlue in your diesel tank
To do:
- Take your keys out, and so no one switches your ignition on.
- Hazards on, if moving traffic is anywhere near.
- Which fluid, and about what amount? Hang on to the bottle or the receipt, and our engineers will know.
- The van locates you quickest with a postcode starting NW3 6, or just the name of a street nearby, and so call from the spot.
Not to do:
- Shifting the car just a short way is no reason to fire up the motor.
- Plenty of diesels power their fuel pump the instant the ignition comes on, so leave the car off.
- Don't top up with diesel to dilute it. AdBlue doesn't dilute in diesel; it separates out.
- Don't drive the vehicle anywhere, not even a short distance along Hampstead High Street.
- No draining it yourself, either, at the verge.
Moving the car away from the pumps is a job for attendants to help with, wherever Hampstead forecourt you're on, the BP or any other. On your own driveway, don't move it at all.
What does AdBlue do in a diesel tank?
Not the engine but the exhaust is where AdBlue is meant to go. Stored in a separate tank, it's injected into the exhaust to clean the gases. Neither side suits the other: urea does not belong in an injection pump, and a pump cannot take urea.
Fuel mixes; AdBlue, after tipped in, won't. Its behaviour is not at all like diesel's. The intake sucks fuel from the lowest part of that tank, and that is just where AdBlue ends up: being denser than diesel, it sinks. Once your pump runs, the AdBlue is first to be pulled through. Before then it sits beneath the diesel, which is why a vehicle topped up in North End last night and not started remains the simple one, provided no one touches the key.
From there it does two kinds of harm. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, so it keeps working on the parts it hits for as long as it stays there. Where the AdBlue is in the pipework, waiting till morning around Hampstead leaves it worse. In your tank alone, time costs nothing. Water protects nothing. The injection pump and every injector need diesel running past them, so the water part damages them by itself.
Why AdBlue in a diesel is often more serious than petrol
Fill a diesel with petrol in error over at the Shell, and the issue is thinned fuel. Mixed into your diesel and left unused, it's no threat at that stage; running your engine does the damage.
With AdBlue in a diesel, the liquid itself is simply the wrong one. It doesn't burn, so it cannot simply be run through. Nor can it be watered down, since it splits again — and the next fill won't clear away crystals or corrosion. So the flush counts for more with AdBlue, and turning your key "to see", in the heart of Hampstead or out in Childs Hill, costs more than nearly any other slip.
The same good news applies as with petrol. Not started? Then the AdBlue sits only inside your tank, the easiest section of the entire system to empty, anywhere your vehicle has stopped in Greater London.
How does AdBlue end up in a diesel tank in Hampstead?
It's not deliberate. Many vehicles have the AdBlue inlet beside the diesel one, now and then behind one flap, and muddling them up is simple after dark. Mostly it takes place with a bottle bought on the way home and poured in on the driveway, not at the forecourt.
Usually, it occurs in one of a few familiar ways. Midway through the drop-off, the dashboard flags it up, and outside Hampstead Parochial Church of England Primary School the top-up is rushed. Someone tips the bottle in at home, right off Heath Street, as the day ends. Otherwise, in dim light outside The Horseshoe, the vehicle gets topped up by a driver using that flap for the first time.
It occurs most in the vehicles people know least: a hire car, a new vehicle, a company car, or the second motor of a household with one diesel and one petrol. Wherever you're in Hampstead or the rest of Greater London, it's the same slip and the same first answer: leave the car off.
Hampstead: started the motor with AdBlue in your diesel tank?
Then the tank is no longer where the AdBlue is. With any running time, it goes on to the injection pump and every injector, after passing via your filter and pipework.
You may notice the motor running unevenly, smoking, losing power, showing warning lights or cutting out, maybe on the way back from Leinster Mansions or halfway across Hampstead. Stop as soon as it is safe, switch off, and don't restart the vehicle to check. With each start, more of that is pulled through.
Hampstead sits under 3 miles from the M1; if you were on it, leave at the next junction and pull up safely rather than driving on.
A quick hop across Hampstead to the car park by Everyman is one matter; heading towards Westminster, under 5 miles away, is something else, because each mile pushes the AdBlue further in. So mileage counts. Approximately how far had it come? Tell us.
Wherever your car came to a halt is where all of it gets done, even with more to flush once your engine has been running. When it's spotted soon, lasting damage is very uncommon.
Hampstead: how AdBlue is cleared from a diesel
The vehicle remains put, whether that's a street near Pentameter's theatre, a driveway, a lay-by or a forecourt in Hampstead, and our van travels to it. Three answers shape the job, so first we ask which fluid was put in, about what quantity, and whether your motor has run.
Then your tank is cleared where the vehicle waits, so the contaminated fuel and the AdBlue come out together. With AdBlue, far more than with petrol, the flush matters: the whole system is flushed right through because what remains will not flush out by itself. Testing the vehicle follows last, once fresh diesel is added and your filter is flushed or, where necessary, replaced. About half an hour on site is typical for most jobs where the motor has not run. The pumps are explosion-proof, safe on a busy forecourt and quiet enough to use outside a house at night.
Priming your system with clean diesel comes last. Whether it is a parking space by Finchley Road & Frognal or a drive around Hampstead, that is where our engineers fire it up and you set off. We check it runs correctly on fresh diesel before we leave. The entire job is done where the vehicle is, so it never has to be taken to a workshop. You receive a VAT invoice and an engineer report after that, which is what insurers want.
About Hampstead and where it is
Hampstead is a locality in north London, situated on the banks of the River Thames and overlooking the city. Hampstead sits on a hill at an elevation of around 116 metres, with views across the surrounding area. Hampstead is characterised by its predominantly flat housing stock and is located near other areas such as Frognal and West Hampstead. Hampstead is a short distance from central London, with Westminster just 4.5 miles away.
Hampstead and Greater London: AdBlue drains across the area
AdBlue call-outs in Hampstead are passed to teams that serve the places around it — Frognal, Vale of Health plus West Hampstead — and much of Greater London beyond, across NW postcodes. Ring and ask instead of guessing if you're close to a border, or somewhere tricky to pin down.
No towing is needed. In Hampstead, a small village, a mobile service works: your vehicle is drained where it stands, be it on a drive, a side street, a parking area or a filling station.
Hampstead: what AdBlue in a diesel tank costs to fix
There's no fair single quote, because the jobs are not the same. What shifts the cost is, firstly, whether the engine has run and for how long; then how much AdBlue went in; and finally where your car is and whether our van can get to it safely, which is easier on an open drive than in a tight space behind St Mary's Catholic Church.
Which fluid went in, what quantity, plus if the engine ran: every Hampstead call begins with exactly those, ahead of a quote, not afterwards. Their replies shrink a range right down to one number.
Our price is quoted on the call, before a van leaves; payment comes on the day, by card or by phone, with nothing upfront. Check your policy while we're on the way: many carry misfuelling cover.
Beside the vehicle in Hampstead, still?
In that case, do nothing — that is the most helpful step available. Keys out; engine and ignition off. Petrol in Diesel takes over the rest, across Hampstead or anywhere in Greater London, once you call 0333 366 0103 saying it was AdBlue, roughly what quantity, and whether it ran.