AdBlue in the Diesel Tank in Quarrendon? Keep It Switched Off
Engine off, ignition off: that is where you begin if AdBlue has gone into the diesel tank. Urea dissolved in water is all AdBlue is. It does not burn, it does not mix with diesel, and the harm it does begins when the system draws it in. If your motor has not run yet, AdBlue in a diesel tank is generally emptied and carefully purged where the vehicle sits around Quarrendon. Nothing comes before calling 0333 366 0103.
Quarrendon, AdBlue in your diesel tank: what to do straight away
Do:
- Take the keys out, so nobody switches your ignition on.
- If you are at all near moving traffic, put your hazards on.
- So you can give us which liquid it was and about what quantity, keep the till receipt or the empty bottle.
- The van finds you quickest with a postcode starting HP19 9, or simply the name of a street nearby, so call from the spot.
Not to do:
- Not even briefly, and not to shift your vehicle: your engine remains off.
- Your ignition remains off: on many diesels, switching it on is enough to run your fuel pump.
- Do not top up with diesel to thin it. AdBlue does not dilute in diesel; it separates out.
- Leave the vehicle where it is rather than driving it anywhere, even a short way down Quarrendon Avenue.
- Don't try to drain the vehicle yourself at the kerbside.
The attendants on duty at any Quarrendon filling station — the Applegreen included — will usually lend a hand pushing it aside if you ask. Stopped on your own drive? Then it stays just where it is.
What does AdBlue do in a diesel tank?
The motor isn't what AdBlue is made for; your exhaust is. It goes into its own tank and is sprayed into the exhaust gas to clean it. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is designed to handle it.
Fuel mixes; AdBlue, after tipped in, won't. Its behaviour is not at all like diesel's. It's heavier than diesel, and so it sinks and collects at the bottom of the tank, which is where the pickup pulls fuel from. The first thing the fuel system pulls through, once it runs, is the AdBlue. So a car that had AdBlue poured in on a drive in Aylesbury 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.
Two kinds of harm follow from there. What is left once the water goes is urea, which forms crystals: they settle in narrow channels and block filters. Worse, it eats at some metals in a fuel system, and keeps going till it is cleared out. A motor left sitting around Quarrendon with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank is not. Water protects nothing. The injection pump and every injector depend on diesel flowing through them, and so the water part damages them in its own right.
Petrol or AdBlue in a diesel: why AdBlue is commonly worse
Fill a diesel with petrol in error over at the Tesco, and the issue is thinned fuel. Blended into the diesel and sitting unused, it is harmless at that stage; using the motor is the damage.
The trouble with AdBlue in a diesel is a completely wrong substance. Not burning, it can't simply be run through. Nor can it be thinned, since it separates again — and the following tankful will not clear away deposits or corrosion. So the flush matters more here, and turning your key "to see", in the centre of Quarrendon or out in Manor Park, does more harm than nearly any other slip.
As with petrol, there's good news. Clearing a tank is the simplest job on any fuel system, and with no start-up, the AdBlue stays in there — anywhere across Buckinghamshire the vehicle has stopped.
Quarrendon: how AdBlue ends up in a diesel tank
Nobody means to do it. The AdBlue filler on many vehicles sits right next to your diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Usually it's never the filling station: a driver picks up a container driving home and tips it in at home.
Usually, it takes place in one of a couple of familiar ways. The top-up is rushed outside Thomas Hickman School, because the dash lit up with a warning as the children were taken in. A driver pours the bottle in outside their house, right off Meadowcroft, as the day ends. Or someone new to that flap tops up the vehicle after dark, parked in the car park by The John Kennedy.
The least known vehicles see it the most — hire cars, new cars, fleet ones, and the spare vehicle of a family with one of each fuel types. Wherever across Buckinghamshire, Quarrendon included, the mistake does not change, and nor does the first step: leave it off.
Started your engine with AdBlue in the diesel tank in Quarrendon?
Then the tank is no longer where the AdBlue is. It has been pulled through the fuel filter and the fuel lines, and if the motor ran for any time, it has reached the high-pressure fuel pump and the fuel injectors.
Watch for rough running, exhaust smoke, lost power, lights on the dash, or a cut-out — coming back from Bowlers Field, perhaps, or midway across Quarrendon. No starting it again to test: pull over when safe, then switch it off. Each start pulls more of that through.
Quarrendon sits under 15 miles from the M40; if you were on it, exit at the first junction and stop safely instead of driving on.
Mileage counts: each mile pushes the AdBlue deeper in, and so heading towards Milton Keynes, under 25 miles away, makes a far bigger job than hopping across Quarrendon to the car park by Quarrendon & Meadowcroft Community Centre. Approximately how far had it come? Tell us.
Wherever the car came to a halt is where all of it gets done, even with more to flush once your engine has been started. Lasting damage is very rare when it's caught soon.
Quarrendon: how AdBlue is emptied from a diesel
Anywhere it has stopped in Quarrendon — a filling station, a layby, a drive, a street beside St Peter's, Quarrendon — our van comes to your car. Which fluid got in, about how much, and whether the motor has been run: our engineers ask first, since those shape the work.
Then your tank is drained where your car sits, so the tainted fuel and the AdBlue come out together. The fuel system is purged thoroughly, which counts more with AdBlue than with petrol, since what it leaves behind does not rinse out on its own. Clean diesel goes in once your filter is cleaned — or replaced, if it needs to be — and then the vehicle is tested. About half an hour once we arrive is usual for most jobs where your motor has not run. Explosion-proof pumps make a busy forecourt sensible to work on, and they run quiet enough to spare the neighbours at night.
Finally, the system is bled with clean diesel. You head off as soon as our engineers have started it, and it makes no difference whether the car is on a driveway around Quarrendon or in a space at Aylesbury. We check it runs correctly on clean diesel before we go. Our engineers do it all wherever your car has ended up, and it never has to go to a garage. You get a VAT invoice and an engineer report afterwards, which is what insurers want.
About Quarrendon
Quarrendon is a suburban area in Buckinghamshire, situated near the River Great Ouse and characterised by semi-detached housing. Quarrendon sits at an elevation of 78 metres, with nearby neighbourhoods including Haydon Hill, Elmhurst, and Watermead. Quarrendon is located approximately 15 miles from Milton Keynes and 37 miles from London, making it a commuter base for those working in the larger cities. Quarrendon has a population of around 5411 residents.
Quarrendon and Buckinghamshire: AdBlue drains across the area
AdBlue call-outs around Quarrendon go to teams that serve the places near it — Haydon Hill, Elmhurst plus Watermead — and much of Buckinghamshire further out, across HP postcodes. Guessing won't help by a border or anywhere tricky to pin down; ring and ask.
Anywhere your car sits — a drive at home, a residential street, a car park, a filling station — our engineers empty it on the spot, and there's no need to take it to us; that suits Quarrendon, a residential suburb, well.
What does AdBlue in a diesel tank cost to sort out in Quarrendon?
There is no fair single quote, since the jobs aren't the same. The price moves first with how long, if at all, the motor has been running, and next with the quantity of AdBlue that got in. After that it rests on where the car is and whether a technician can get to it safely, which is easier on an open drive than in a tight spot behind TK Maxx.
That's why each call from Quarrendon starts with the same three queries, asked before giving a figure, not after: what went in, how much, and whether it's run. When they are answered, a range becomes a single firm figure.
You get that quote on the phone, before anybody heads out, and you pay on the day, by card or by phone, with nothing upfront. Look at your policy while we're on the way: plenty carry misfuelling cover.
Beside the vehicle in Quarrendon, still?
Right now, the best thing to do with your vehicle is to not touch it. Keys out; engine and ignition off. Call 0333 366 0103 then tell us it's AdBlue, about how much, and whether it's run. Petrol in Diesel takes it from there, around Quarrendon or anywhere in Buckinghamshire.