Skip to content

Petrol in Diesel

0333 366 0103

Don't Start It: AdBlue in a Diesel Tank in Queens Park

Motor off, ignition off: that's how you start if AdBlue has got into the diesel tank. Urea dissolved in water is all AdBlue is. As it is water-based, it won't ignite and won't blend with diesel; damage just comes once your pump starts pulling it. Caught before the engine has been run, AdBlue in a diesel tank is normally a drain and a thorough flush, done where your car is in Queens Park. No step comes before calling 0333 366 0103.

Call 0333 366 0103

Your next steps straight away, Queens Park: AdBlue in your diesel tank

To do:

  • So no one can switch the ignition on, take the keys out.
  • Put your hazards on if you are at all close to moving traffic.
  • So you can give us which liquid it was and about what quantity, save the till receipt or the empty bottle.
  • The van locates you fastest with a postcode starting MK40 4, or just the name of a street close by, so phone from the car.

Things not to do:

  • No starting your engine — not for a second, not to reposition the vehicle.
  • Don't switch the ignition on. On plenty of diesels that alone runs the fuel pump.
  • Do not top up with diesel to dilute it. AdBlue doesn't mix in diesel; it separates out.
  • Even a short distance along Dunville Road is too far to drive the car.
  • No draining it yourself, either, on the roadside.

The staff working at any Queens Park forecourt — the Sainsbury's among them — will normally lend a hand pushing it clear if you ask. On that drive, the car remains exactly as it is.

What does AdBlue do in a diesel tank?

AdBlue is made for the exhaust, not the engine. From a dedicated tank it goes straight to the exhaust, treating what your motor lets out. Neither side fits the other: urea does not belong in an injection pump, and a pump cannot deal with urea.

Tipped in with the diesel, it stays separate rather than blending — entirely unlike fuel. It sinks, because it's heavier than diesel, and settles down where the pickup draws its fuel from. Once the pump runs, the AdBlue is first to be pulled through. Before then it waits beneath your diesel, which is why a car topped up in Fenlake yesterday and not switched on remains the simple case, provided no one touches the key.

It does two kinds of damage from there. Crystals and corrosion. As the water dries, it strands urea that hardens in filters and tiny passages; and, since it attacks certain metals, each part it touches suffers for as long as it remains inside. A motor left sitting in Queens Park with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank is not. Water lubricates nothing. The injection pump and every injector need diesel flowing through them, and so the water content damages them by itself.

Draining AdBlue from a diesel tank in Queens Park

AdBlue in a diesel: why it's regularly worse than petrol

Fill a diesel with petrol by mistake over at the Morrisons, and this issue is thinned fuel. Blended through your diesel and left still, it's no threat for now; running the motor is the harm.

AdBlue in a diesel is an issue of the wrong substance altogether. Since it doesn't burn, running it through is not an option. Deposits and corrosion stay through the next tankful, and AdBlue splits again from your diesel, and so watering it can't work. That is why the flush matters more, and turning the key "to see" does more harm here than nearly any other slip — in Great Denham or the heart of Queens Park alike.

As with petrol, there is good news. Anywhere across Bedfordshire your car has come to rest, an unrun engine means the AdBlue still inside the reservoir: the easiest bit of a fuel system to empty.

How AdBlue ends up in a diesel tank around Queens Park

Nobody means to do it. The AdBlue filler on many cars rests right next to the diesel filler, sometimes under the same flap, and the two caps can look alike in poor light. It usually occurs at home, from a container grabbed on the journey home, rather than at the forecourt.

It tends to happen in a couple of familiar ways. The refill gets hurried outside Queen's Park Academy, after your dash lit up with a warning as the kids were taken off. In the evening, a bottle goes in on a drive near Crowe Road. Otherwise, after dark by The Queen, the vehicle is refilled by someone using that flap for the first time.

Rented motors, brand-new cars, fleet cars, or the spare vehicle in a family with one of each: the least known cars get it the most. Anywhere around Bedfordshire, Queens Park included, the mistake doesn't change, and neither does the first response: leave it off.

Already started the engine with AdBlue in your diesel tank in Queens Park?

Then the AdBlue has left the tank. Via the filter, along the lines, and — with any running time — on to the injection pump and every injector: that's where it travels.

You may see your engine running unevenly, smoking, losing power, showing warning lights or cutting out, perhaps on the way back from The Slipe or halfway across Queens Park. No restarting to check: stop once it is safe, then switch it off. Each start pulls more of it through.

Queens Park lies under 10 miles from the M1; if you were on it, exit at the first junction and pull up safely rather than carrying on.

Mileage matters: each mile carries the AdBlue further in, so driving towards Milton Keynes, under 15 miles away, gives a much larger job than crossing Queens Park to the car park by Bedford Moravian Church (Queen's Park). Approximately how far had it come? Tell us.

There is more to clean out once the engine has been started, and our engineers do all of it where the car has come to a stop. Permanent damage is very rare if it is caught soon.

Queens Park: how AdBlue is cleared from a diesel

Anywhere it has come to rest in Queens Park — a forecourt, a lay-by, a drive, a road beside All Saints — the van comes to your car. What went in, roughly the quantity, plus whether your engine has turned over: we check first, because those shape the job.

Then the tank is drained where your car sits, and so the tainted fuel and the AdBlue come out together. Your system is cleaned thoroughly, which counts more with AdBlue than with petrol, because what it leaves behind doesn't rinse out on its own. A test of the vehicle follows at the end, once fresh diesel goes in and the filter is cleaned or, if necessary, replaced. Most of these jobs are a half-hour visit once our engineers get there, provided the motor hasn't run. The pumps are explosion-proof, safe on a working forecourt and quiet enough to use outside a house after dark.

Bleeding the fuel system with fresh diesel comes at the end. You drive off as soon as we have started it, and it makes no difference whether your car is on a drive around Queens Park or in a space at Bedford. Before leaving, our engineers make sure it is running correctly with clean diesel in. The whole job is done where your car is, so it never needs to go to a workshop. The insurer will want an engineer's report and the VAT invoice — each handed over once this job is done.

About Queens Park itself

Queens Park is a suburban area in Bedfordshire, situated inland at an elevation of 33 metres, with a mix of residential and community facilities. Queens Park lies within commuting distance of London, approximately 46 miles away, and is closer to the city of Milton Keynes, which is about 13 miles away. Queens Park is characterised by its predominant housing type, which is flats, and is near other local places such as Bedford, Biddenham, and South End.

AdBlue drains across Bedfordshire, Queens Park included

Over the MK postcode area, the vans taking AdBlue call-outs in Queens Park reach most of Bedfordshire as well, Bedford, Biddenham and South End among them. Near a border, or somewhere tricky to pin down? Asking is better than guessing, so ring.

Queens Park is a residential suburb, and an on-site drain suits it: whether your car is on a home drive, a residential street, a car park or a forecourt, we drain it where it sits, so it never needs to be shifted to us.

What AdBlue in a diesel tank costs to put right around Queens Park

Not one flat figure would be fair, since each job is different. Three things move the price: whether the motor has run and for how long, how much AdBlue got in, and where your car is. That last one turns on whether our van can get to it safely, and an open drive is simpler than a tight space behind Seventh Day Adventist Church.

That's why each call from Queens Park starts with the same three queries, asked before giving a figure, not after: what was put in, how much, and if it has run. The answers turn a range into a straight quote.

The price is given during the call, before anyone sets off; payment happens on the day, by card or by phone, with nothing upfront. Check your insurance whilst we're on the way: many include misfuelling cover.

Still beside your car in Queens Park?

Then, the best thing to do with your vehicle is to leave it. Keys out, motor off, ignition off. Say it was AdBlue, roughly how big an amount, and whether it ran, on 0333 366 0103. After that Petrol in Diesel handles it, across Queens Park or anywhere in Bedfordshire.

Call 0333 366 0103