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Petrol in Diesel

0333 366 0103

AdBlue in the Diesel Tank in Harcourt Hill? Keep It Switched Off

Engine off, ignition off: that is where you begin if AdBlue has gone into the diesel tank. In plain terms, AdBlue is simply urea in water. Not like fuel, it neither ignites nor mixes, and nothing happens till the engine pulls it through. If your motor hasn't run yet, AdBlue in a diesel tank is normally drained and carefully purged where the car sits in Harcourt Hill. Ring 0333 366 0103 before you do anything else.

Call 0333 366 0103

Harcourt Hill, AdBlue in the diesel tank: what to do at once

Do these:

  • So no one can turn your ignition on, take your keys away.
  • Hazards on, if moving traffic is at all near.
  • Which fluid, and roughly how much amount? Hang on to the bottle or your receipt, and our engineers will see.
  • Call us from where you are. A postcode starting OX2 9, or the name of the closest street, brings our van to you without a search.

Do not:

  • Moving the vehicle even a few yards is no reason to start the engine.
  • Turning the key to ignition by itself starts your pump going on many diesels. Skip it.
  • Pouring in more diesel does not work: AdBlue separates out instead of blending.
  • Even a short stretch up Harcourt Hill is too far to drive the car.
  • No emptying it yourself, either, at the roadside.

The attendants working at any Harcourt Hill filling station — the Sainsbury's included — will usually help pushing it clear if you ask. Parked on your own driveway? Then it stays exactly as it is.

What does AdBlue do in a diesel tank?

Not the motor but the exhaust is where AdBlue is meant to go. Its own tank holds it, and from there it's sprayed into the exhaust, and there it treats the fumes. No part inside a fuel pump is designed for this liquid — and none of that was meant to go that way.

Poured in with your diesel, it stays separate instead of blending — entirely unlike fuel. Denser than diesel, it drops and pools below it — the same spot the intake sucks from. Easiest of all: one that got AdBlue in New Botley overnight and has not been started since. The liquid waits at the foot of your tank, undrawn — but it would be the first thing through if the engine starts, before any diesel at all.

It causes two kinds of harm from there. Crystals and corrosion. As the water evaporates, it leaves urea that hardens in filter elements and narrow passages; meanwhile, because it attacks certain metals, each part it reaches keeps suffering for as long as it stays in there. Overnight, a vehicle sitting around Harcourt Hill with AdBlue through its pipework gets worse; if it's just inside that tank, nothing changes. The water in it causes harm of its own: your high-pressure pump and your injectors depend on diesel to lubricate them, and water gives them nothing.

Draining AdBlue from a diesel tank in Harcourt Hill

Why is AdBlue in a diesel often the bigger fault?

Fill a diesel with petrol by mistake over at the BP, and this issue is thinned fuel. No harm is done while it sits put, blended into the diesel — only when the motor runs on it.

With AdBlue in a diesel, the liquid itself is plainly the wrong one. Not burning, it can't just be run through. Crystals and corrosion stay through the next tankful, and AdBlue separates again from your diesel, and so thinning it can't work. That is why the flush matters more, and turning your key "to see" does more harm here than nearly any other mistake — in Osney or the heart of Harcourt Hill equally.

The good news is the same as with petrol. Not started? Then the AdBlue sits just inside the tank, the easiest section of the whole system to empty, wherever your vehicle has come to rest around Oxfordshire.

How AdBlue ends up in a diesel tank in Harcourt Hill

Nobody means to do it. The AdBlue filler on plenty of motors rests right next to the diesel filler, sometimes under the same flap, and the two caps can look alike in poor light. Most of the time it occurs with a bottle bought on the way home and poured in on the driveway, not at the pump.

Usually, it occurs in one of a few familiar ways. A warning light comes on during the school run, and the top-up takes place in a hurry outside North Hinksey Church of England Primary School. A bottle is poured in at the end of the day on a drive just off Grosvenor Road. One more version: darkness, a pub car park by The Fishes, and a driver using that flap the first time.

It happens most in the cars drivers know least: a hire car, a new vehicle, a company car, or the second motor of a household with one diesel and one petrol. Same mistake, an identical first response — leave it switched off — wherever you are around Harcourt Hill or the remainder of Oxfordshire.

Harcourt Hill: started the motor with AdBlue in the diesel tank?

If so, the AdBlue is no longer inside your tank. The filter and pipework have had it pulled through, and any running time takes it on to the high-pressure pump and every injector.

Perhaps returning from Raleigh Park, or midway across Harcourt Hill, your motor may run rough, smoke, lose power, flash your dash or stall. Stop as soon as it is safe, switch off, and do not restart it to check. More of it is pulled through with each start.

On the Wheatley Spur, under 10 miles from Harcourt Hill, the next junction is where to leave, and anywhere sensible is where to stop — not carrying on.

How far it went counts. A few hundred yards across Harcourt Hill to the car park by Westminster Sports Centre is a very different job from a run towards Oxford, under 3 miles away, with the AdBlue reaching further into the fuel system with each mile. Tell us about how far it had come.

Wherever the vehicle came to a halt is where all of it gets done, even with more to clean out once the motor has been run. Long-term damage is very rare when it is spotted soon.

Draining AdBlue in a diesel in Harcourt Hill: what it takes

The vehicle remains where it is, whether that is a road beside St Lawrence's Church, a drive, a layby or a forecourt around Harcourt Hill, and our van comes to it. Three replies decide the job, and so before anything else we ask what was put in, about what quantity, plus if the engine has turned over.

Next, draining that tank on the spot removes the polluted diesel along with the AdBlue together. Your system is cleaned thoroughly, which matters more with AdBlue than with petrol, because what it leaves behind doesn't rinse out on its own. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested. Not run? In that case expect about half an hour on site for most jobs. The pumps are explosion-proof, safe on a busy forecourt and quiet enough to use outside a house at night.

Fresh diesel goes in to bleed the fuel system, and that is the final step. Firing it up comes next, and then you drive off from where the vehicle is parked, at Oxford or on a driveway around Harcourt Hill. It is checked on fresh diesel to be sure it runs correctly before our technicians go. No workshop is needed at any stage, with the entire job done on the spot. Insurers want a VAT invoice and an engineer report, and you get both afterwards.

About Harcourt Hill itself

Harcourt Hill is a suburban area located near Oxford, sitting at an elevation of 116 metres in the inland countryside of Oxfordshire. Harcourt Hill is characterized by its semi-detached housing and is situated close to nearby places such as North Hinksey Village, Botley, and Cumnor Hill. Harcourt Hill has a population of approximately 1801 residents and is just 1.6 miles from Oxford, making it a convenient residential location. Harcourt Hill is also within commuting distance of London, being around 52.4 miles away.

AdBlue drains across Oxfordshire, Harcourt Hill included

AdBlue call-outs around Harcourt Hill are passed to vans that cover the towns near it — North Hinksey Village, Botley as well as Cumnor Hill — and most of Oxfordshire beyond, across OX postcodes. Near a boundary, or anywhere awkward to pin down? Asking beats assuming, and so phone.

No towing is needed. In Harcourt Hill, a residential suburb, a van that comes to you fits: your vehicle is drained on the spot, whether on a driveway, a residential street, a parking area or a forecourt.

What does AdBlue in a diesel tank cost to sort out around Harcourt Hill?

Since each jobs vary, a flat price wouldn't be honest. Three things move the price: whether the engine has been running and for how long, how much AdBlue went in, and where the vehicle is. That last one rests on whether our van can get to it safely, and an open driveway is simpler than a tight spot behind The Rosary Room.

That is why each call from Harcourt Hill starts with the same three questions, asked before giving a figure, not after: what went in, how much, and if it has run. When they are answered, a range becomes one fixed number.

Before anyone sets off, you are told the price on the phone. Then payment is on the day, by card or by phone, with nothing upfront. Plenty of insurance policies include misfuelling cover, and so it's worth checking yours while we are on the way.

Still next to the vehicle around Harcourt Hill?

Not touching the car is, right now, the most useful thing open to you. Keys out; engine and ignition off. Say it's AdBlue, about how big an amount, and whether it ran, on 0333 366 0103. From there Petrol in Diesel handles it, in Harcourt Hill or wherever within Oxfordshire.

Call 0333 366 0103