--- title: Quakers Yard: AdBlue in a Diesel Tank, What Next canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/quakers-yard-merthyr-tydfil/ location: Quakers Yard county: Merthyr Tydfil latitude: 51.658460 longitude: -3.307440 service: AdBlue in a Diesel Tank updated: 2026-10-16 --- # Quakers Yard: AdBlue in the Diesel Tank? Find Your Situation Has the engine run since the AdBlue was put in? This one question decides almost everything else from here. Wherever the vehicle stands — Treharris, Quakers Yard — don't run a motor that has not run yet. Leave your motor and your ignition off then ring 0333 366 0103; it's usually a drain and a thorough flush, done where the vehicle is in Quakers Yard. Pull over the moment you safely can then turn off, if it has already run. It is a larger job, though step one does not change. Match what happened to a situation from the list below, anywhere around Merthyr Tydfil you happen to be. ## On a Quakers Yard forecourt with AdBlue in a diesel You're at the petrol pump, the nozzle or the bottle still in your hand, and you have just noticed the cap you opened was the wrong one. Whether Gulf Treharris Service Station, Texaco or somewhere else around Quakers Yard, the situation is identical. What it means: this is the ideal spot to find out. The AdBlue is in that tank and nowhere else. Nothing has pulled it in. Freeing the petrol pump is no reason to start it — so do not get back in. Get the attendants to help pushing it to a bay, save the receipt, then ring us from there. The equipment is explosion-proof and safe on a busy forecourt, and so a vehicle that can't be pushed clear gets drained where it is at the petrol pump. ## AdBlue in the diesel tank at home around Quakers Yard Several days had passed with the warning light on. A bottle bought at the shop, emptied in on the driveway — and it's only at the bin that the cap caught a second look. It occurs on driveways just off Cardiff Road as often as anywhere. The point: no driving since leaves it nearly equal to finding it at the pump. Diesel and AdBlue stay separate: the AdBlue drops to the floor of your tank and stays there, however long it waits. What to do: leave the keys inside the house so nobody moves your car in the morning. Then call. Goitre Coed or Quakers Yard: whichever your driveway sits, that is where it gets drained. Our pumping kit runs quiet enough that it won't wake the neighbours at night. ## On the road around Quakers Yard with AdBlue in a diesel A mile or two beyond filling up, the engine started misbehaving: roughness, smoke, less power, warnings on the dash. Caerphilly Road, perhaps, or the route towards Cardiff — a run of under 15 miles. Meaning? The fuel pump has sucked the AdBlue in. Through the filter, along the lines, and — the more the mileage — deeper into the injection pump and each injector. Each restart, like each mile, carries it deeper. Your move: stop anywhere sensible, then turn your motor off. Quakers Yard lies under 10 miles from the M4; on it, come off at the next junction instead of pressing on for the services. No test restarts: clearing is not something AdBlue does. Phone, and say how far your car went. ## A hire or company car with AdBlue in the wrong tank? You've had this vehicle hardly a week. On your own car, AdBlue is absent or elsewhere. On this one, the inlet is right by the diesel cap — a surprise to you. Wherever you are in Merthyr Tydfil, any driver can be caught. Put simply: one extra step on top of the cases above, which turn on whether it's run. Plenty of rental and fleet agreements need the owner's sign-off for repairs. What to do: call the hire firm or your fleet manager first, then us. That's faster settled before our technicians turn up than after. If you're stuck in the car park outside the nearest station, or by The Church of Christ Evangelical Baptist Church, while you wait for an answer, leave the vehicle off. ## AdBlue in your diesel tank? Not sure, in Quakers Yard Occasionally the fair answer is "I think so". The bottle is lighter than it should be, there is a faint smell of ammonia around the filler, and you can't remember which cap you took off. The gates of the local primary school in a rush, say, or someone's driveway out in Melin Caiach. What it means: a little spilled round your filler does no damage to your engine. Inside your diesel tank, by contrast, AdBlue damages it. You can't tell which by turning the ignition, and doing so will draw in any AdBlue that is in the tank. Next: assume it got in, then leave the engine off. Ring with the details: we'd rather find a clean tank than drain one after the engine has been run. ## Each AdBlue drain around Quakers Yard shares these steps Whichever situation you are in, this job starts the same way. We come to the vehicle, whether it is at a forecourt, a driveway, the car park at Glantaff Inn or a side street close to Treharris Library, and ask three things: what went in, about how much, and whether the engine has been run. Your price is given on the call, before a van leaves, and those answers shape the work. Then your tank is drained and your system rinsed thoroughly, which matters more with AdBlue than with petrol: AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not rinse out on its own. Clean diesel goes in after your filter is flushed or replaced, and the car is finally tested. Not started? Then about half an hour on site covers most jobs. We fire it up last. Before we head off, it is checked to be sure it runs properly on fresh diesel. Lasting damage is very uncommon if it is spotted early, and the entire job is done where your car is. For your insurer: an engineer's report and the VAT invoice. For you: payment on the day, nothing in advance. Many insurance policies cover misfuelling, and so check yours as we head over. ## About Quakers Yard Quakers Yard is a suburban area in Merthyr Tydfil, situated on the banks of the River Taff at an elevation of 119 metres. Quakers Yard is located near several smaller communities, including Goitre Coed, Craig Berthlwyd, and Pentwyn Berthlwyd, and is approximately 13.5 miles north of Cardiff. Quakers Yard has a population of around 3264 people, predominantly living in terraced housing. Quakers Yard is also relatively close to the Welsh capital, yet far enough from London to maintain its own distinct character, being 136.9 miles west of the city. ## Quakers Yard and Merthyr Tydfil: AdBlue drains across the area Throughout CF postcodes, the teams covering Quakers Yard — a residential suburb — work nearby towns too, Craig Berthlwyd and Pentwyn Berthlwyd among them. Quickest of all: a CF46 5 postcode to show your location. Whether the car is on a lay-by on the way to Royal Park or in a car park in the middle of Quakers Yard, it doesn't need to move. The van drains it in place. If you're somewhere hard to describe, close to Saint Matthias Church Treharris or close to a border, ring and ask instead of assuming. ## In one line: your scenario Unstarted? Leave the car that way and phone. Started by now? Pull over, switch off, ring. Petrol in Diesel takes over the remainder whichever it is, across Quakers Yard and Merthyr Tydfil, on 0333 366 0103.