AdBlue in a Diesel Tank in Mill Green? Don't Start It
Motor off, ignition off: that's where you begin if AdBlue has got into the diesel tank. Water with urea dissolved in it: that is AdBlue. The trouble begins once it's sucked through the pump — it won't burn, and it will not blend with diesel. If the engine hasn't run yet, AdBlue in a diesel tank is usually emptied and thoroughly purged where the vehicle sits around Mill Green. Call 0333 366 0103 before you do anything else.
Those opening minutes: AdBlue in the diesel tank around Mill Green
Do:
- Keys out — that way nobody can switch anything on.
- Close to moving traffic? Then put the hazard lights on.
- The empty bottle or the till receipt shows us the product and the quantity, so do not bin it out.
- Call us from where you are. A postcode starting AL9 5, or the name of the closest street, gets the van to you without a search.
Do not:
- Don't start your engine, even for a moment to shift the vehicle.
- Don't switch your ignition on. On many diesels that alone runs the fuel pump.
- Adding more diesel does not work: AdBlue settles out instead of thinning.
- Even a short distance down Mill Green Lane is too far to drive the vehicle.
- Beside the road, do not try draining it on your own.
The staff on duty at any Mill Green filling station — the Tesco among them — will usually lend a hand rolling it clear if you ask. At your own drive, do not touch it at all.
What AdBlue does in a diesel tank
Meant for the exhaust, AdBlue has no business in your motor. It goes into its own tank and is sprayed into the exhaust gas to clean it. Not one side suits the other: urea does not belong in an injection pump, and an injection pump cannot take urea.
Inside a diesel tank it behaves really differently from fuel. It does not mix in. The pickup takes fuel from the deepest part of the tank, and that's exactly where AdBlue settles: being heavier than diesel, it sinks. The first thing the system pulls through, once it runs, is the AdBlue. So a car that had AdBlue poured in on a drive in Old Hatfield last night, and has not been started since, is still the straightforward case: the AdBlue is lying at the bottom of the tank, and nothing has drawn it in.
Two kinds of harm come from there. What is left once the water evaporates is urea, which forms crystals: they settle in tiny channels and block filters. On top of that, it attacks some metals in the fuel system, and carries on until it is cleared out. A car left standing around Mill Green with AdBlue already in its lines is worse by the morning; one with AdBlue only in its tank is not. And there is the water: it offers no protection to the parts that need it most — the injection pump and each injector.
AdBlue in a diesel: why it's regularly worse than petrol
Petrol put into a diesel on Shell's forecourt leaves your fuel watery — that is the main fault. Mixed into the diesel and left still, it is no threat at that stage; running your motor is the damage.
AdBlue in a diesel is a fault of the wrong substance altogether. It does not burn, so it can't simply be run through. It doesn't stay mixed, so it cannot be weakened. And crystals and corrosion do not wash out with the next tank of fuel. That is why the flush matters more with AdBlue than with petrol, and why starting the engine "to see" costs more here than nearly anywhere else, whether the vehicle is in Hatfield or the middle of Mill Green.
The good news is the same as with petrol. If your engine hasn't run, the AdBlue is still inside the tank, and that tank is the easiest part of a fuel system to clear, wherever around Hertfordshire the vehicle is standing.
AdBlue in a diesel tank around Mill Green: how it ends up there
After dark, two caps side by side — the AdBlue cap and the diesel cap, occasionally under a single flap — may look the same. No one means it; many designs invite it. A bottle bought while heading home and tipped in at home, instead of at the forecourt, is the typical story.
It tends to take place in a couple of familiar ways. A warning light comes on during the school run, and the top-up occurs in a hurry outside The Ryde School. Someone tips the container in outside their house, just off Chequers, as the day ends. Or the car is topped up in the car park outside The Wrestlers, in poor light, by someone who has never opened that flap before.
It happens most in the cars motorists know least: a hire car, a new car, a company car, or the second vehicle of a household with one diesel and one petrol. Same slip, an identical first response — keep it off — anywhere you are in Mill Green or the remainder of Hertfordshire.
AdBlue in your diesel tank in Mill Green, and the motor started?
If so, the AdBlue is no longer inside your tank. The filter and pipework have had it sucked along, and some running carries it on to the high-pressure pump and each injector.
Lumpy running, smoke from the exhaust, lost power, dashboard warnings or stalling: any may show up, perhaps part way across Mill Green or coming back from The Dell. Stop as soon as it is safe, switch off, and don't restart the car to check. Each start pulls more of that through.
If you were on the A1(M), under a mile from Mill Green, come off at the next exit and stop somewhere sensible instead of pressing on.
Each mile pushes the AdBlue further into your system. That is why crossing Mill Green to park near Mill Green Museum & Working Mill and a drive of under 10 miles towards St Albans are very different jobs. Let us know about how far it had come.
Our technicians do all of the cleaning where your car has ended up, and once the engine has run there is more of it. Caught soon, it very seldom leaves permanent damage.
What does an AdBlue drain on a diesel involve around Mill Green?
The car stays where it is, whether that is a road beside Stanborough Reedmarsh, a driveway, a lay-by or a filling station around Mill Green, and the van travels to it. Before anything else we ask what got in, about how much, and whether your motor has been run, since those answers settle the work.
Then that tank is emptied where your car stands, and so the contaminated fuel and the AdBlue come out together. A full flush counts much more with AdBlue than with petrol, because what remains won't clear away by itself. The filter is flushed, or replaced where it needs to be; fresh diesel goes in; and the car is tested. About half an hour on site is typical for most jobs when the motor hasn't run. Quiet enough to use outside a house at night, and safe on a busy forecourt, the pumps are explosion-proof.
Bleeding your system with new diesel comes at the end. Whether it's a parking bay by Hatfield or a drive around Mill Green, that is where our engineers fire it up and you head off. We confirm it runs properly on clean diesel before we go. The whole job is done where the vehicle is, so it never has to go to a workshop. You receive a VAT invoice and an engineer report later, which is what insurers want.
About Mill Green, briefly
Mill Green is a suburban area in Hertfordshire, situated on the riverside at an elevation of 64 metres. Mill Green lies approximately 18.8 miles from London and 6 miles from St Albans, with nearby places including The Ryde, Hatfield Hyde, and Birchwood. Mill Green has a population of around 573 people and is characterised by predominantly detached housing.
AdBlue drains in Mill Green and across Hertfordshire
The Ryde, Hatfield Hyde and Birchwood are among the towns near Mill Green that the same teams serve, together with much of Hertfordshire further out, over the AL postcode area. Assuming won't help close to a county line or anywhere tricky to pin down; phone and check.
Wherever your vehicle sits — a drive at home, a residential street, a car park, a forecourt — our technicians empty it on the spot, with no need to bring it to us; which suits Mill Green, a residential suburb, well.
Mill Green: what AdBlue in a diesel tank costs to fix
There's no honest single quote, since the jobs aren't the same. The cost shifts first with how long, if at all, the engine has been running, and next with the amount of AdBlue that got in. After that it depends on where your car is and whether a van can reach it safely, which is easier on an open driveway than in a tight gap behind Birchwood Leisure Centre.
What got in, what quantity, plus whether the engine ran: every Mill Green call begins with exactly that, before a quote, not after. Their answers shrink the range down to one figure.
Before anyone heads out, you hear our quote by phone. And you pay on the day, by card or by phone, with nothing in advance. Many insurance policies include misfuelling cover, so it is worth checking yours whilst we are on the way.
Mill Green: still alongside the car?
Then, touch nothing — that is the best move there is. Keys out; motor and ignition off. Call 0333 366 0103 then tell us it's AdBlue, about how much, and if it's run. Petrol in Diesel takes it from there, in Mill Green or anywhere in Hertfordshire.