--- title: Y Ffald: AdBlue in a Diesel Tank, What Next canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/y-ffald-ceredigion/ location: Y Ffald county: Ceredigion latitude: 52.442690 longitude: -4.032330 service: AdBlue in a Diesel Tank updated: 2026-10-15 --- # Y Ffald: AdBlue in the Diesel Tank? Find Your Situation One fact counts above all when AdBlue is in a diesel tank, and that is whether your motor has been started since. If it has not, keep it that way, whether your car is in Y Ffald itself or out in Clarach. Leave the engine and your ignition off and call 0333 366 0103; it's generally a drain and a thorough flush, done where your car is in Y Ffald. Stop the minute you safely can then switch off, if it has been run. It's a bigger job, yet stage one does not change. Match what happened to a situation from the ones below, anywhere across Ceredigion you are. ## At the pump in Y Ffald: AdBlue in a diesel Picture it: standing by the pump, gripping the bottle, you realise the filler you took off was not the right one. It could be the the nearest petrol station, or the BP, or another forecourt around Y Ffald. What it means: this is the best place to find out. No pump has drawn it through, so the AdBlue sits only inside your tank. Next: avoid the urge to start it just to move away from the pump. Get the staff to lend a hand pushing it to a space, save the receipt, then phone us from there. The equipment is explosion-proof and safe on a busy forecourt, and so a car that cannot be pushed clear gets emptied where it is at the petrol pump. ## At home in Y Ffald with AdBlue in the diesel tank For days the dash had been nagging you. A bottle from the garage, emptied in on the driveway — and it's only by the bin that the cap got a second look. It happens on driveways just off Carreg Wen as frequently as anywhere. The point: no driving since leaves it almost as good to spotting it at the petrol pump. AdBlue doesn't mix with diesel; it sinks to the bottom of the tank and waits there. Overnight doesn't change that. Your move: the keys indoors, and so nobody drives the car anywhere first thing. After that, ring. Your driveway is where it is drained, whether around Y Ffald or Bow Street. Even at night, the pumps are quiet enough for a driveway. ## AdBlue in a diesel and already driving around Y Ffald? A short way after topping up, the engine started misbehaving: rough running, smoke, less power, warnings on the dash. Somewhere along Bryncastell or on the road towards Bangor — over 50 miles away. The point: the system has drawn AdBlue through already. Mileage decides how far it gets: filter and pipework to begin with, then the high-pressure pump and each injector. It travels deeper with each extra mile driven and each restart. What to do: pull over where it is safe to do so then switch off. On the M4, under 50 miles from Y Ffald, that means the next junction, not the services further on. Do not restart it to see if it has cleared; it will not have. Call, and say what distance your car went. ## Hire, lease or company car with AdBlue in the wrong tank It's a car you have had for a week. The AdBlue filler sits right alongside the diesel one, which you did not know, since your own vehicle either has no AdBlue or keeps it somewhere else. Any driver, wherever in Ceredigion, could do it. In short: one extra step on top of the cases above, which depend on whether it has run. Many rental and fleet agreements need the owner's approval before repairs. Settling it before we turn up is quicker, and so phone the rental company or your fleet manager, then us. Waiting for a reply in the car park outside Bow Street, or near Capel Y Garn? Leave the engine off meanwhile. ## Not sure it was AdBlue in the diesel tank, Y Ffald? Truthfully, the best answer may be that you think it did. Which cap was taken off, you can't say; but the bottle feels lighter than expected, and ammonia lingers by your filler. A hurried stop by the gates of the local primary school, or a call to a friend in Llangorwen: both fit. Put simply: a spill near the filler leaves your motor no harm. In your diesel tank, however, AdBlue damages it. If there is AdBlue in the tank, turning on your car will suck it in, and it would not tell you which either. What to do: treat it as if it got in. Don't start the car. Ring us and explain what you saw; we would rather check a tank that turns out clean than drain one that has already been run. ## The common ground in every Y Ffald AdBlue drain The work begins the same way, whichever the situation. Wherever the car stands — The Welsh Black's car park, a road beside Carreg Llwyd, a drive, a filling station — the van gets there and asks about the liquid, the quantity, and whether the engine has turned over. Those replies settle this work, and you hear the price by phone, before anyone heads out. AdBlue crystallises and is corrosive to certain metals used in fuel systems, and so it does not wash out unaided; that is why the flush, after the drain, matters much more with AdBlue than with petrol. Next comes the fuel filter — flushed, or replaced when needed — followed by fresh diesel, and a test of your vehicle. If your engine hasn't run, most jobs take about half an hour once we're there. The last step is firing it up. Our test that it runs smoothly on fresh diesel comes before our technicians go. When it's spotted early, the vehicle very seldom has lasting damage, and the entire job takes place where it is. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Many insurance policies include misfuelling cover, so it's worth checking yours whilst we are on the way. ## About Y Ffald itself Y Ffald is a coastal locality in Ceredigion, situated near the towns of Bow Street and Pen-y-garn. Y Ffald lies at a low elevation of around 30 metres, close to the sea and within a short distance of other nearby places such as Rhydypennau. Y Ffald has a population of approximately 1095 people, living in predominantly semi-detached housing. ## Y Ffald and Ceredigion: AdBlue drains across the area Over SY postcodes, the vans covering Y Ffald — a coastal area — work surrounding towns too, Pen-y-garn and Rhydypennau among them. Quickest of all: a SY24 5 postcode for where you stand. Whether the car is on a lay-by on the way to Coed Nantsiriol or in a car park in the middle of Y Ffald, it doesn't need to shift. The drain is done right there. Phone and ask rather than guess if you are close to Hen Gaer, on a border, or somewhere awkward to pin down. ## Your scenario, summed up Unstarted? Leave the car that way then phone. Run already: stop, power down, ring 0333 366 0103. Petrol in Diesel takes over the rest, within Y Ffald or anywhere across Ceredigion.