Greenhill: AdBlue in the Diesel Tank? Leave It Off
With AdBlue in your diesel tank, your ignition remains off and so does your motor. Water with urea dissolved in it: that is AdBlue. Being water-based, it won't burn and never combines with diesel; trouble just comes when your pump begins pulling it. If your motor hasn't run yet, AdBlue in a diesel tank is usually emptied and carefully rinsed where the car sits in Greenhill. First, ring us on 0333 366 0103.
Your next steps straight away, Greenhill: AdBlue in the diesel tank
To do:
- So no one can switch your ignition on, take your keys away.
- Hazards on, if moving traffic is anywhere near.
- Which fluid, and roughly what quantity? Hang on to the bottle or the till receipt, and our engineers can know.
- Give us a postcode starting HA1 2, or whatever street lies closest, and our van reaches you directly — so call wherever you are.
Do not:
- Do not start your motor, even for a moment to shift your car.
- Switching the key to ignition alone starts the pump running on plenty of diesels. Avoid it.
- No extra fuel added. The AdBlue will not blend, so it is pointless.
- Leave the car where it is rather than driving it anywhere, even a short stretch down Duffield Close.
- No emptying it yourself, either, at the roadside.
At a forecourt in Greenhill, whether it's the BP or another one, ask the attendants to help you push your car away from the petrol pump. On the drive, your car stays just as it is.
AdBlue in a diesel tank, and what it does there
AdBlue is made for your exhaust, not your engine. From a separate tank it goes straight to the exhaust, cleaning what the engine emits. Neither side suits the other: urea doesn't belong in an injection pump, and a pump cannot deal with urea.
Fuel blends; AdBlue, after poured in, will not. The behaviour is not at all like diesel's. The pickup sucks fuel from the deepest part of that tank, and that is exactly where AdBlue settles: being heavier than diesel, it sinks. The first thing the fuel system pulls through, once it runs, is the AdBlue. So a vehicle that had AdBlue poured in on a drive in Harrow on the Hill last night, and hasn't been started since, is still the simple case: the AdBlue is lying at the bottom of the tank, and nothing has pulled it in.
It does two kinds of harm from there. What remains when the water evaporates is urea, which forms crystals: they lodge in narrow passages and clog filters. On top of that, it attacks certain metals in the fuel system, and carries on until it is cleared out. If the AdBlue has reached the lines, waiting till morning in Greenhill leaves it worse. Inside that tank alone, waiting costs nothing. The water in it does damage of its own: your high-pressure pump and the injectors rely on diesel to lubricate them, and water offers them nothing.
Petrol or AdBlue in a diesel: why AdBlue is commonly worse
Petrol put into a diesel on Shell's forecourt makes the fuel watery — that's the main issue. It mixes with your diesel, and while it's inside your tank it does no harm; the damage comes from running the engine on it.
With AdBlue in a diesel, the fluid itself is plainly the wrong one. It does not burn, and so it can't simply be run through. Nor can it be thinned, because it splits back out — and the following tankful won't clear away crystals or corrosion. So the flush matters more here, and trying your engine "to see", in the centre of Greenhill or out in Belmont, costs more than nearly any other slip.
The good news is the same as with petrol. Wherever around Greater London the car has stopped, an unstarted engine means the AdBlue yet in the tank: the easiest bit of any fuel system to clear.
AdBlue in a diesel tank in Greenhill: how it ends up there
It is not on purpose. Many vehicles keep the AdBlue inlet beside the diesel inlet, occasionally under a single flap, and mixing them up is easy after dark. It mostly occurs outside the house, from a container bought en route home, not at the filling station.
A couple of familiar ways account for most cases. Rushing, outside Saint Jerome Church of England Bilingual School, after a warning light flashed on during the school run, a parent tops up your car. A driver pours the container in at home, just off Becket Fold, as the day ends. Or your car is topped up in the car park at The George, in poor light, by somebody who has never opened that flap before.
It happens most in the motors motorists know least: a hire car, a new vehicle, a company car, or the second car of a household with one diesel and one petrol. Wherever around Greater London, Greenhill as well, the mistake does not change, and nor does the first step: leave it off.
Started your engine with AdBlue in your diesel tank around Greenhill?
Then that tank is no longer where the AdBlue is. It's been pulled through the filter and the lines, and if the motor ran for any time, it has got to the high-pressure fuel pump and your injectors.
Rough running, smoke, lost power, dashboard lights or stalling: each may appear, maybe midway across Greenhill or returning from Kenton Recreation Ground. Stop as soon as it is safe, switch off, and don't restart the vehicle to check. Every start pulls more of that through.
Greenhill lies under 5 miles from the M1; if you were on it, leave at the first junction and stop safely rather than driving on.
How far it went matters. A couple of hundred yards across Greenhill to the car park by 201 (Harrow) Detachment ACF is a very different job from a run towards Westminster, under 15 miles away, with the AdBlue reaching further into the system with every mile. Let us know about how far it had come.
Once the engine has been run, the flush includes more, and all of it is done where the vehicle has stopped. Spotted soon, it very seldom leaves permanent damage.
What does an AdBlue drain on a diesel involve around Greenhill?
Wherever it has come to rest in Greenhill — a filling station, a lay-by, a driveway, a street beside Metro Cinema — the van travels to your vehicle. The work depends on three answers, and our technicians ask for first — which fluid went in, the amount, and if your motor has run.
Right there, the tank is then drained, and all of the contaminated diesel and the urea come out at once. What remains from AdBlue will not flush away by itself, so the whole system gets a full flush, which matters much more here than for petrol. Fresh diesel goes in after your filter is cleaned — or swapped, when it needs to be — and then the vehicle is tested. If your engine has not run, the majority of jobs take about half an hour once our technicians are there. The pumps are explosion-proof, safe on a working forecourt and quiet enough to use outside a house at night.
The last step is to prime the fuel system on new diesel. Whether it is a parking bay at Kenton or a driveway in Greenhill, that is where our technicians start it and you set off. Our engineers make sure it runs correctly on clean diesel before we go. The whole job is done where the car is, so it never needs to be taken to a garage. You get a VAT invoice and an engineer report later, which is what insurers ask for.
About Greenhill, for a moment
Greenhill is a suburban area in northwest Greater London, situated approximately 10 miles from central London. Greenhill has a relatively low elevation of around 55 metres and is characterised by a high proportion of flat dwellings. Greenhill is located near the towns of Kenton, Wealdstone, and Harrow, and is part of the wider London urban area.
AdBlue drains across Greater London, Greenhill included
Our teams that answer AdBlue calls around Greenhill also cover the locations around it, Kenton, Wealdstone and Harrow among them, and most of Greater London beyond, across the HA postcode area. Assuming doesn't help close to a border or anywhere tricky to pin down; ring and ask.
A van that comes to you suits Greenhill, a residential suburb: you have no need to bring the car to us, because our engineers drain it there, in a drive, a residential street, a parking area or a forecourt.
What does AdBlue in a diesel tank cost to sort out around Greenhill?
There's no honest single price, since the jobs aren't the same. Three things change the price: whether the engine has been running and for how long, how much AdBlue got in, and where the car is. That last one rests on whether a van can reach it safely, and an open drive is simpler than a tight spot behind Saint John the Baptist, Greenhill.
Ahead of a quote, never after, each call from Greenhill begins with three checks: the fuel, the amount, plus if it ran. Those replies shrink a range right down to a single figure.
The price is quoted on the call, before anyone sets off; settling up happens on the day, by card or over the phone, with nothing upfront. As our engineer is on the way, check your policy: many include misfuelling.
Greenhill: still beside the vehicle?
Then the most helpful thing you can do is nothing to the car. Keys out; engine and ignition off. Call 0333 366 0103 then tell us it's AdBlue, roughly how much, and whether it's run. Petrol in Diesel takes it from there, around Greenhill or anywhere around Greater London.