--- title: AdBlue in a Diesel Tank Wattstown: What Now canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/wattstown-rhondda-cynon-taf/ location: Wattstown county: Rhondda Cynon Taf latitude: 51.634190 longitude: -3.419460 service: AdBlue in a Diesel Tank updated: 2026-10-20 --- # AdBlue in the Diesel Tank in Wattstown, and What to Do Next One thing counts above all once AdBlue is in a diesel tank, and that is whether the engine has run since. Out in Penrhys or here around Wattstown, an unrun engine should stay that way. Call 0333 366 0103 with the key and motor both off. In Wattstown, that is generally emptied and flushed on the spot. Pull over the minute it is safe then turn off, if it has been run. Step one stays the same, even if the job grows. Below: the cases we meet, anywhere around Rhondda Cynon Taf. Choose the one that fits. ## On a Wattstown forecourt with AdBlue in a diesel Just now, bottle still in hand, you realise that the cap you opened was the wrong one, there at the petrol pump. Whether Shell, Asda or somewhere else in Wattstown, the situation is the same. Meaning? Finding out on the forecourt is the best it gets. Just your tank holds AdBlue; not one part past it has taken it in. Next: avoid the temptation to fire it up just to free up the petrol pump. Ring us from the forecourt after the vehicle is in a bay — the staff will lend a hand to push it — then keep the bottle. Draining it there at the petrol pump is fine if it cannot be shifted, since the equipment is explosion-proof. ## AdBlue in the diesel tank at home in Wattstown The warning light had been on for days. You bought a bottle, poured it in on the drive, and only when you put the empty bottle in the recycling did you look again at the cap. It occurs on drives just off Aberllechau Road as commonly as anywhere. In short: if the car has not been driven since, it's nearly equal to spotting it at the forecourt. AdBlue doesn't mix with diesel; it sinks to the bottom of the tank and waits there. Overnight does not change that. What to do: leave your keys inside the house so nobody moves the vehicle in the morning. Then call. Pontygwaith or Wattstown: wherever your driveway is, that's where it gets drained. Late-night clears outside a house are fine: the pumps are low-noise. ## Wattstown: drove off with AdBlue in a diesel? A mile or two beyond topping up, your motor began playing up: rough running, smoke, less power, lights on your dash. Possibly it was on Hillside Terrace, maybe on the way out towards Cardiff, under 15 miles away. Meaning? Your fuel pump has sucked the AdBlue up. The high-pressure pump and each injector get it as well on a bigger trip, once the fuel filter and lines have had it. Every restart, like each mile, pushes it on. What to do: pull over where it's safe then switch off. On the M4, under 10 miles from Wattstown, that means the next junction, not the services further on. Don't restart it to see if it has cleared; it will not have. Roughly what distance did it go? Tell us when you phone. ## AdBlue in the wrong tank: hire, lease and company vehicles You have had the vehicle barely a week. On your own car, AdBlue is absent or elsewhere. On this one, the inlet is just next to the diesel inlet — news to you. Wherever you happen to be in Rhondda Cynon Taf, every driver could be caught. In short: one extra step on top of the situations above, which turn on if it's run. Plenty of rental and fleet agreements require the owner's sign-off before repairs. Your move: hire firm or fleet manager to begin with, us second, because settling it early saves time. If you're stuck in the car park at Dinas Rhondda, or by St Mary Magdalene Church, whilst you wait for an answer, leave the vehicle off. ## Wattstown: unsure whether it was AdBlue in the diesel tank? At times the fair answer is "I think so". A slight ammonia-like smell hangs near your filler, the bottle seems too light, and the cap you took off is a blur. A hurried stop by the gates of the local primary school, or a call to a friend in Tylorstown: both fit. What it means: a little spilled around your filler does no damage to your motor. A diesel tank with AdBlue inside is another matter. Firing up the car won't tell you which, and if there is AdBlue in the tank it would draw it in. Assume it went in, and don't turn the engine. Phone with the details: we would rather find a clean tank than drain one once your motor has run. ## Wattstown: what every AdBlue drain has in common The job opens identically, whatever your case. Wherever your car is — the pub in the village's car park, a street beside St Annes Church, a driveway, a forecourt — the van gets there and asks about the liquid, the quantity, plus if the motor has been run. On the phone, ahead of anything else, you hear our quote, and those answers decide the job too. AdBlue forms crystals and is corrosive to some metals used in fuel systems, so it does not rinse out unaided; that's why a full flush, after this drain, matters far more with AdBlue than with petrol. Next is the filter — flushed, or swapped when needed — followed by clean diesel, and a test of your car. If the engine hasn't run, most jobs take about half an hour once we are there. Our engineers fire it up last. We confirm it runs properly on fresh diesel before we leave. Permanent damage is very rare if it is caught quickly, and the entire job is done where the vehicle is. For your insurer: an engineer's report and the VAT invoice. For you: payment on the day, nothing in advance. Plenty of policies include misfuelling, and so check yours as we head over. ## About Wattstown itself Wattstown is a small village in Rhondda Cynon Taf, situated on the riverside in south Wales. Wattstown has a population of around 1105 people and is characterized by its predominantly terraced housing. Wattstown is located near other villages such as Pontygwaith, Ynyshir, and Stanleytown, and is approximately 14.9 miles from Cardiff. Wattstown sits at an elevation of 136 metres, in a valley setting. ## AdBlue drains about Wattstown and across Rhondda Cynon Taf Wattstown is a village, and the same teams that cover it work the towns near it too, Ynyshir and Stanleytown among them, across the CF postcode area. Quickest of all: a CF39 0 postcode for your location. Central Wattstown or a lay-by near Pontygwaith Park: either way it is, your vehicle doesn't need to move an inch for us. Wherever it stands, that's where it is cleared. Awkward to pin down? Close to Paul Kirner's Music Palace or a border? Asking is better than guessing, so ring. ## In one line: your situation Motor not started: ring, leaving it switched off. Whatever line applies, Petrol in Diesel handles the rest on 0333 366 0103, across Rhondda Cynon Taf and in Wattstown — once you pull over, switch off then ring, if it's run.