Merlins Cross: AdBlue in the Diesel Tank? Leave It Off
With AdBlue in the diesel tank, your ignition stays off and so does your motor. Water with urea dissolved in it: that's AdBlue. It does not burn, it doesn't mix with diesel, and the damage it does begins when the fuel system draws it in. If the motor has not run yet, AdBlue in a diesel tank is usually drained and carefully purged where your car sits in Merlins Cross. Phone 0333 366 0103 before you do anything else.
AdBlue in the diesel tank in Merlins Cross: the first few minutes
Do:
- Pocket your keys, which stops someone switching the power on.
- Close to moving traffic? Then put your hazards on.
- Which fluid, and about what amount? Save the bottle or the receipt, and our technicians will see.
- Call us from where you are. A postcode starting SA71 4, or the name of the nearest street, gets the van to you without a search.
Never do these:
- Not even briefly, and not to roll the vehicle: your motor remains off.
- Do not switch the ignition on. On many diesels that alone runs the fuel pump.
- AdBlue does not mix in diesel — it separates out — so adding extra fuel won't weaken it.
- Keep it where it is rather than driving it anywhere, even a short way along Watery Lane.
- By the road, do not attempt draining it yourself.
On a forecourt around Merlins Cross, whether it's the the nearest petrol station or another one, ask the staff to help you roll your car clear of the pump. Parked on your own drive? Then it remains exactly where it is.
AdBlue in a diesel tank, and what it does there
Made for the exhaust, AdBlue has no place in the motor. From a separate tank it goes straight to the exhaust, treating what the engine emits. A fuel pump is not made to take it, and AdBlue was never supposed to go through one.
Fuel mixes; AdBlue, after poured in, will not. The behaviour is not at all like fuel's. It sinks, because it is denser than diesel, and pools down where the pickup takes its fuel from. Simplest of all: a vehicle that got AdBlue in Orange Gardens overnight and has not turned since. The AdBlue sits at the foot of the tank, untouched — but it would be the first thing through if the motor runs, ahead of any diesel at all.
Two kinds of damage follow from there. It eats at certain metals used in fuel systems, working on whatever it reaches until it is removed completely. And once the water evaporates, the urea forms crystals that block filters and lodge in tiny channels. A car left sitting around Merlins Cross with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank isn't. Then there's the water: it offers no protection to the parts that need it the most — the high-pressure pump and every injector.
Petrol or AdBlue in a diesel: why AdBlue is commonly worse
Petrol pumped into a diesel on Tesco's forecourt leaves your fuel watery — that's the main issue. Mixed into your diesel and left unused, it is harmless for now; using your engine is the damage.
AdBlue in a diesel is another matter: not thin fuel, yet no fuel at all. Not burning, it can't simply be run through. Deposits and corrosion remain after the following fill, and AdBlue splits again from your diesel, and so watering it won't help. That is why the flush matters more, and turning your key "to see" costs more here than nearly any other mistake — in Rose Valley or the heart of Merlins Cross alike.
With AdBlue, the good news is no separate from petrol. If the engine has not run, the AdBlue is still in the tank, and your tank is the simplest part of a fuel system to clear, wherever around Pembrokeshire your car is sitting.
AdBlue in a diesel tank in Merlins Cross: how it ends up there
Nobody means to do it. The AdBlue filler on many cars waits right next to your diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. It mostly occurs at home, from a bottle grabbed on the journey home, not at the filling station.
It tends to occur in a few familiar ways. The refill is hurried outside the local primary school, because your dash flashed with a warning while the children were taken off. In the evening, a container is tipped in on a driveway near Freemans Walk. Else, in dim light by The Hope Inn, the vehicle is refilled by a driver using that flap the first time.
It occurs most in the vehicles drivers know least: a hire car, a new motor, a company car, or the second vehicle of a household with one diesel and one petrol. Wherever you're around Merlins Cross or the rest of Pembrokeshire, it is the same error and the same first answer: leave it off.
AdBlue in the diesel tank in Merlins Cross, and the engine started?
The AdBlue has left the tank, then. The filter and pipework have had it sucked along, and some running time carries it on to the injection pump and each injector.
You may notice your motor running roughly, smoking, losing power, showing warning lights or cutting out, maybe on the way back from Holyland Wood or halfway across Merlins Cross. No restarting to test: pull over once it is safe, then switch everything off. More of it is pulled through with each start.
Merlins Cross sits under 50 miles from the M4; if you were on it, exit by the first junction and stop somewhere safe instead of carrying on.
How far it went counts. A few hundred yards across Merlins Cross to the car park by Pembroke Library is a very different job from a run towards St Davids, under 25 miles away, with the AdBlue reaching further into the fuel system with each mile. Roughly how far it had come is worth telling us.
There's more to flush once the engine has been run, and our engineers do all of it where the car has ended up. Caught soon, it very seldom leaves lasting damage.
What emptying AdBlue from a diesel involves around Merlins Cross
Our engineers come to the car, wherever it has stopped around Merlins Cross: a side street close to Pembroke Museum, a drive, a lay-by or a forecourt. Before anything else our technicians ask what got in, roughly how much, and whether your motor has been run, since those answers determine the work.
Then the tank is drained where the car waits, and so the contaminated fuel and the AdBlue come out together. A careful flush counts much more after AdBlue than after petrol, because residue will not clear out on its own. The filter is cleaned, or replaced where it needs to be; fresh diesel goes in; and the vehicle is tested. Most of these jobs are a half-hour visit once our engineers get there, provided your engine hasn't run. Low-noise enough to use outside a house at night, and fine on a busy forecourt, our pumps are explosion-proof.
Last, the fuel system is primed with clean diesel. Whether it's a parking space outside Pembroke or a drive around Merlins Cross, that is where our technicians start it and you set off. Before we go, our technicians check it is running correctly with new diesel in. The entire job is done where the car is, so it never needs to be taken to a garage. At the end, you are given the paperwork for your insurer: a VAT invoice and a written report from the engineer.
About Merlins Cross
Merlins Cross is a suburban area in Pembrokeshire, situated near the coast at an elevation of around 18 metres. Merlins Cross lies within a short distance of several nearby places, including Grove, Kingsbridge, and Pembroke. Merlins Cross is characterized by its predominantly detached housing stock, reflecting the area's residential nature. Merlins Cross is located approximately 21 miles from St Davids, the smallest city in the UK.
AdBlue drains across Merlins Cross and Pembrokeshire
Over the SA postcode area, the vans answering AdBlue call-outs in Merlins Cross serve most of Pembrokeshire as well, Grove, Kingsbridge and Pembroke included. If you're close to a border, or somewhere hard to describe, ring and ask instead of assuming.
Merlins Cross is a residential suburb, and a mobile drain suits it: whether the vehicle is on a home drive, a residential street, a car park or a forecourt, we drain it where it sits, and so it never needs to be shifted to us.
Merlins Cross: what AdBlue in a diesel tank costs to fix
No flat price could be honest, because every job is different. What changes the price is, firstly, whether your engine has been running and for how long; then how much AdBlue went in; and finally where the car is and whether our van can get to it safely, which is simpler on an open drive than in a tight spot behind Pembroke Town Hall.
For that in mind, each call from Merlins Cross opens with the same trio — what was put in, how much, whether it ran — before a quote. With them, the range narrows to one fixed number.
The quote is given on the call, before a van sets off; settling up happens on the day, by card or over the phone, with nothing upfront. Plenty of insurance policies include misfuelling cover, so it is worth checking yours while we are on the way.
Beside the car around Merlins Cross, right now?
Leaving the vehicle alone is, right now, the most useful move open to you. Keys out, engine off, ignition off. Call 0333 366 0103: AdBlue, roughly how much, and if the engine ran is everything our engineers ask. Petrol in Diesel takes over the rest throughout Pembrokeshire, Merlins Cross too.