AdBlue in the Diesel Tank in St Albans? Keep It Switched Off
Motor off, ignition off: that's where you start if AdBlue has gone into the diesel tank. AdBlue is urea dissolved in water. Unlike fuel, it neither burns nor blends, and nothing starts until the motor pulls it through. A drain and a thorough flush, done where the vehicle is in St Albans, is generally what AdBlue in a diesel tank takes — if it is caught before the engine has been run. Before you do anything else, call 0333 366 0103.
St Albans, AdBlue in your diesel tank: what to do at once
Do these:
- Pull the keys out, so nobody switches your ignition on.
- Near moving traffic? So put the hazard lights on.
- Which product, and about how much amount? Hang on to the bottle or the till receipt, and we will see.
- Call us from where you are. A postcode starting AL3 5, or the name of the nearest street, brings our van to you without a search.
Not to do:
- Moving your car even a short way is no reason to fire up the engine.
- Your ignition stays off: on many diesels, switching it on is enough to run the pump.
- Adding more diesel does not work: AdBlue settles out rather than blending.
- Don't drive the vehicle anywhere, not even a short distance down Spencer Street.
- No draining it yourself, either, at the roadside.
Moving the vehicle away from the island is a job for attendants to help with, whichever St Albans forecourt you're on, the Esso included. On your own driveway, don't touch it at all.
What does AdBlue do in a diesel tank?
Meant for the exhaust, AdBlue has no place in your motor. It goes into its own tank and is sprayed into your exhaust gas to fresh it. Not one side suits the other: urea doesn't belong in an injection pump, and a pump cannot take urea.
Inside a diesel tank it acts really differently from fuel. It doesn't mix in. The intake takes fuel from the deepest part of your tank, and that is exactly where AdBlue settles: as it is denser than diesel, it sinks. Once the pump runs, the AdBlue is first to be pulled through. Until then it sits beneath the diesel, which is why a car filled in St Julians last night and not started remains the straightforward one, as long as nobody turns your key.
It does two kinds of harm from there. What is left when the water evaporates is urea, which forms crystals: they settle in narrow passages and block filters. Worse, it eats at some metals in the fuel system, and keeps going till it is cleared out. Pipes carrying AdBlue spell harm overnight for a vehicle sitting in St Albans. Only inside the tank, it stays stable. Diesel protects the injection pump and each injector as it flows; water offers none of that, which is a second form of damage.
Petrol or AdBlue in a diesel: why AdBlue is regularly worse
Petrol pumped into a diesel on BP's forecourt leaves the fuel watery — that's the whole problem. No harm comes while it stays put, mixed into your diesel — only once the motor works on it.
With AdBlue in a diesel, the fluid itself is simply the wrong one. Since it does not burn, running it through isn't an option. Whether your car is in New Greens or the heart of St Albans, firing it up "to see" costs more with AdBlue than nearly any other error, and the flush counts more. The reasons: it will not remain mixed, so watering it down fails; and deposits and corrosion outlast the following fill.
The good news is the same as with petrol. If your motor has not run, the AdBlue is still inside the tank, and that tank is the easiest part of a fuel system to clear, wherever in Hertfordshire your car is sitting.
St Albans: how AdBlue ends up in a diesel tank
Plenty of motors put the AdBlue cap alongside the diesel one, occasionally under one flap, and after dark the two can look the same. Nobody intends it. Mostly it's not the filling station: someone buys a container driving home and tips it in at home.
Usually, it happens in one of a couple of familiar ways. Midway through the drop-off, the dashboard flags it up, and outside Aboyne Lodge Junior Mixed and Infant School the top-up is hurried. A bottle is poured in at the end of the day on a drive just off Victoria Street. Or your car is topped up in the car park outside White Swan, in poor light, by somebody who has never opened that flap before.
The least familiar vehicles get it the most — rentals, brand-new cars, company ones, and the other car of a family with one of each fuels. Leave it switched off: that's the first response to the same slip, wherever in St Albans or the remainder of Hertfordshire you are.
AdBlue in the diesel tank around St Albans, and the motor started?
Then that tank is no longer where the AdBlue is. Given any running time, it travels to the high-pressure pump and each injector, having passed via the fuel filter and pipework.
Watch for rough running, exhaust smoke, falling power, warnings on your dash, or a cut-out — returning from Quaker Garden, perhaps, or midway across St Albans. When you safely can, pull over then turn everything off — without turning it on again to see. With each start, more of that is pulled through.
Leave the M1, under 3 miles from St Albans, at the next junction and stop safely, rather than driving on.
A quick hop across St Albans to the car park by St Alban's Museum + Gallery is one thing; heading towards London, under 25 miles away, is something else, because every mile carries the AdBlue deeper in. So distance matters. Roughly 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 clean out once your engine has been started. Very rarely does it leave lasting damage when it's noticed quickly.
Clearing AdBlue in a diesel in St Albans: what it takes
Our engineers come to the vehicle, wherever it has stopped around St Albans: a side street near The Castle Inn, a drive, a lay-by or a forecourt. Which fluid went in, about how much, and if the engine has turned over: we check first, since those shape the work.
On the spot, that tank is then emptied, and both the polluted diesel and the urea come out as one. With AdBlue, far more than with petrol, flushing counts: the whole system is flushed all the way through since what remains won't wash out unaided. Your filter is flushed, or replaced where it needs to be; clean diesel goes in; and your car is tested. If the motor has not run, the majority of jobs take about half an hour once we are there. The pumps are explosion-proof, safe on a working forecourt and quiet enough to use outside a house after dark.
Lastly, the fuel system is bled with clean diesel. After that our technicians fire it up and you drive off, whether from a parking space by St Albans Abbey or a drive around St Albans. The test before we leave is that it runs smoothly on new diesel. Since the job is done in its entirety where your car is, a workshop never comes into it. You receive a VAT invoice and an engineer report after that, which is what insurers want.
About St Albans and where it is
St Albans is a city located in Hertfordshire, England, situated near the lakes and waterways of the Ver Valley. St Albans sits at an elevation of around 121 metres, with a mix of semi-detached housing and other residential types. St Albans is close to several smaller communities, including Townsend, St Stephens, and Bernards Heath, and is positioned approximately 19 miles northwest of central London. St Albans has a population of around 70,647 people, making it a significant urban centre in the region.
AdBlue drains across St Albans and Hertfordshire
Townsend, St Stephens and Bernards Heath are among the towns near St Albans that the same teams serve, along with most of Hertfordshire beyond, over the AL postcode area. Assuming won't help close to a county line or anywhere hard to describe; phone and ask.
St Albans is a cathedral city, and a call-out drain suits it: whether the car is on a home drive, a residential street, a car park or a forecourt, our technicians drain it where it stands, and so it never needs to be shifted to us.
What does AdBlue in a diesel tank cost to sort out around St Albans?
There is no honest single price, since the jobs aren't the same. Three things change the price: whether the motor has run and for how long, how much AdBlue got in, and where the car is. That last one comes down to whether our van can get to it safely, and an open drive is simpler than a tight spot behind St Albans Market.
What went in, what quantity, and if it ran: every St Albans enquiry opens by asking precisely those, before a figure, not after. Given them, a range narrows to one fixed figure.
You get that price by phone, before anyone heads out, and you pay on the day, by card or over the phone, with nothing upfront. Look at your insurance whilst we are on the way: many include misfuelling cover.
Still next to your car in St Albans?
In that case, touch nothing — that is the most helpful step available. Keys out; engine and ignition off. Call 0333 366 0103: AdBlue, the amount, and whether the engine ran is everything our technicians need. Petrol in Diesel handles the remainder throughout Hertfordshire, St Albans included.