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Petrol in Diesel

0333 366 0103

AdBlue in the Diesel Tank in Rhosymedre? Keep It Switched Off

Engine off, ignition off: that is where you start if AdBlue has gone into the diesel tank. Urea dissolved in water is all AdBlue is. Being water-based, it will not burn and won't blend with diesel; trouble only starts when the pump begins drawing it. A drain and a thorough flush, done where the vehicle is in Rhosymedre, is usually what AdBlue in a diesel tank needs — if it's caught before your engine has been run. Ring 0333 366 0103 before you do anything else.

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Those opening minutes: AdBlue in the diesel tank in Rhosymedre

To do:

  • So no one can switch the ignition on, take your keys out.
  • Hazards on, if moving traffic is at all near.
  • So you can give us which fluid it was and about how much, save your receipt or the empty bottle.
  • Call right where you are. Quote a LL14 3 postcode or the nearest street sign, and no one has to hunt for you.

Never do these:

  • Not even for a second, and not to shift the car: the motor stays off.
  • Many diesels run their fuel pump the moment your ignition comes on, so keep it off.
  • No more fuel added. The AdBlue will not blend, so it's wasted.
  • Even a short stretch along Well Street is too far to drive the vehicle.
  • Beside the road, don't attempt emptying it on your own.

The attendants working at any Rhosymedre forecourt — the Shell included — will normally help pushing it aside if you ask. If you are on your own drive, leave it exactly where it stands.

What AdBlue does in a diesel tank

AdBlue is made for the exhaust, not the engine. It goes into its own tank and is sprayed into your exhaust gas to fresh it. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is made to handle it.

It doesn't blend. After it's tipped into the tank, AdBlue behaves nothing like fuel. It sinks, because it is heavier than diesel, and settles down where the pickup takes its supply from. The first thing the fuel system pulls through, after it runs, is the AdBlue. So a motor that had AdBlue poured in on a drive in Pont Cysyllte last night, and hasn't been started since, is still the straightforward case: the AdBlue is lying at the bottom of your tank, and nothing has pulled it in.

Two kinds of damage come from there. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, so it keeps labouring on the components it hits for as long as it stays there. A motor left standing around Rhosymedre with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank isn't. Diesel lubricates the injection pump and every injector as it flows; water offers none of that, and that is a second kind of harm.

Draining AdBlue from a diesel tank in Rhosymedre

Petrol or AdBlue in a diesel: why AdBlue is often worse

Fill a diesel with petrol by mistake over at the Esso, and this issue is thinned fuel. No harm is done as long as it stays unused, mixed into your diesel — only when your engine works on it.

With AdBlue in a diesel, the fluid itself is simply the wrong one. It does not burn, so it cannot simply be run through. Deposits and corrosion remain through the following fill, and AdBlue splits back from your diesel, and so watering it won't work. That is why the flush counts so much, and trying the engine "to see" does more harm here than nearly any other slip — in Acrefair or the centre of Rhosymedre alike.

The same good news applies as with petrol. Emptying a tank is the easiest part on any fuel system, and without start-up, the AdBlue remains in it — anywhere around Wrexham the vehicle has stopped.

Rhosymedre: how AdBlue ends up in a diesel tank

Nobody means to do it. The AdBlue filler on plenty of cars rests right next to the diesel filler, at times under the same flap, and the two caps can look alike in poor light. Mostly it is not the filling station: a driver picks up a bottle driving home and tips it in outside the house.

It tends to take place in a couple of familiar ways. A warning light comes on during the school run, and the top-up happens in a hurry outside Weston Rhyn Primary School. A bottle is poured in at the end of the day on a drive just off Rock Road. One more version: dim light, the car park by Jolly Masons, and a driver opening that flap the first time.

It crops up most in a hire car, a new vehicle, a fleet vehicle, or the other motor of a family with both fuel types — the cars people use least. Anywhere across Wrexham, Rhosymedre as well, the mistake doesn't change, and nor does the first response: keep it switched off.

Rhosymedre: started your engine with AdBlue in your diesel tank?

Then the AdBlue has left that tank. Via the fuel filter, along the lines, and — given any running — on to the high-pressure pump and every injector: that's how far it travels.

Expect rough running, smoke, lost power, lights on the dash, or a cut-out — returning from Tŷ Mawr Country Park, perhaps, or part way across Rhosymedre. Pull over when safe. Turn off. Keep the car off rather than testing it again. More of it is pulled through with each start.

Leave the M53, under 25 miles from Rhosymedre, by the next junction and park safely, rather than driving on.

How far it went matters. A few hundred yards across Rhosymedre to the car park by St John's is a very different job from a run towards Wrexham, under 10 miles away, with the AdBlue reaching further into your system with every mile. Tell us roughly how far it had come.

Wherever your car came to a stop is where all of it gets done, even with more to clean out once your engine has been started. Lasting damage is very rare if it is caught quickly.

What does an AdBlue drain on a diesel involve around Rhosymedre?

Our technicians come to the vehicle, wherever it has stopped around Rhosymedre: a side street close to Cefn Mawr Library, a drive, a lay-by or a forecourt. Three replies decide the job, so first we ask which fluid got in, about the amount, and whether the motor has turned over.

The polluted diesel and the urea come out together when your tank is emptied, right there. The fuel system is rinsed thoroughly, which matters more with AdBlue than with petrol, since what it leaves behind doesn't rinse out on its own. The filter is flushed, or replaced where it needs to be; clean diesel goes in; and your car is tested. Not run? In that case count on roughly half an hour once we are there for most jobs. Quiet enough to use outside a house at night, and safe on a working forecourt, our pumps are explosion-proof.

The final step is to bleed the fuel system on clean diesel. At that point our technicians fire it up and you drive off, whether from a parking space by Ruabon or a driveway around Rhosymedre. We confirm it runs properly on fresh diesel before we leave. Our technicians do it all wherever the car has ended up, and it never has to be taken to a garage. The insurer will want an engineer's report and the VAT invoice — each handed over afterwards.

About Rhosymedre, briefly

Rhosymedre is a village situated on the riverside in Wrexham county, with a mix of terraced housing and a population of around 1248 residents. Rhosymedre sits at an elevation of 118 metres, close to the nearby communities of Cefn-mawr and Cefn-bychan. Rhosymedre is located near the city of Wrexham, approximately 5.9 miles away, and is part of the wider Welsh countryside. Rhosymedre's riverside setting provides a distinctive character to the village.

AdBlue drains across Rhosymedre and Wrexham

Cefn-mawr, Cefn-bychan and Aber-nant are among the places near Rhosymedre that the same teams serve, together with much of Wrexham beyond, over the LL postcode area. Close to a border, or somewhere awkward to pin down? Asking is better than guessing, and so phone.

Anywhere the car stands — a drive at home, a residential street, a car park, a filling station — our technicians empty it there, with no need to take it to us; which suits Rhosymedre, a village, well.

What AdBlue in a diesel tank costs to put right in Rhosymedre

Each job is different, so no fixed price is honest. Three things move the price: whether the engine has been running and for how long, how much AdBlue got in, and where your car is. That last one turns on whether our van can reach it safely, and an open drive is easier than a tight space behind Cefn Bank.

That is why every call from Rhosymedre starts with the same three questions, asked before giving a figure, not after: what went in, how much, and if it has run. Their replies shrink a range right down to a single figure.

You get that quote by phone, before anybody sets off, and you pay on the day, by card or by phone, with nothing upfront. As the van is on the way, check your policy: plenty cover misfuelling.

Beside the vehicle in Rhosymedre, right now?

Right now, the most helpful thing to do with your vehicle is to not touch it. Ignition off, motor off, keys out. Ring 0333 366 0103 then tell us it's AdBlue, roughly how much, and whether it has run. Petrol in Diesel takes it from there, in Rhosymedre or anywhere in Wrexham.

Call 0333 366 0103