--- title: Graig: AdBlue in a Diesel Tank, What Next canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/graig-rhondda-cynon-taf/ location: Graig county: Rhondda Cynon Taf latitude: 51.597110 longitude: -3.344470 service: AdBlue in a Diesel Tank updated: 2026-10-09 --- # AdBlue in the Diesel Tank in Graig: What Now? One thing counts above all once AdBlue is in a diesel tank, and it is if your motor has been started since. If it hasn't, keep it that way, whether the car is around Graig itself or out in Graigwen. Leave the motor and the ignition off then phone 0333 366 0103; it is normally a drain and a thorough flush, done where the vehicle is in Graig. When your motor has run, stop somewhere safe straight away, then turn it off. A bigger job, then, but the identical first move. Find the scenario below that matches yours, wherever in Rhondda Cynon Taf it happened. ## Graig forecourt: AdBlue in a diesel at the pump You are 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. Possibly you are at the Asda, maybe at the Sainsbury's, perhaps somewhere else around Graig. The point: of every spot to notice, this is the best. The AdBlue is in your tank and nowhere else. Nothing has sucked it in. Freeing the petrol pump is no reason to run it — so don't get back in. Ask the attendants to help you roll the car into a parking space, keep the receipt or the bottle, then call us from the forecourt. If it cannot be shifted, it can be drained at the pump: the equipment is explosion-proof and fine on a working forecourt. ## At home around Graig with AdBlue in your diesel tank On your dash, a reminder had shown all week. A bottle from the garage, tipped in on the driveway — and it's only by the bin that the cap got your eye. Just off Leyshon Street is not less likely from any other place. What it means: if you have not driven since, this is nearly as good as the forecourt. Diesel and AdBlue keep separate: the AdBlue settles to the base of that tank and remains put, no matter how long it waits. Next: the keys in the house, so nobody takes the car off first thing. After that, phone. Our technicians drain the vehicle on your drive, whether that is around Graig or out in Maesycoed. The pumps are quiet enough to use outside a house at night. ## Graig: drove off with AdBlue in a diesel? Topped up, pulled away, and before long your engine was running roughly, smoking, down on power, or lighting up the dash. Somewhere along Maritime Terrace or else heading to Cardiff — under 15 miles away. In short: the AdBlue has been sucked into the system. Through the filter, along the pipework, and — the more the distance — on into the injection pump and every injector. Every restart, like every mile, pushes it on. Next: find a safe place, stop, and switch the engine off. Leave at the first junction — not the services beyond — if you are on the M4, under 10 miles from Graig. Starting it again to check achieves nothing — AdBlue never clears on its own. Call us and say how far you travelled. ## AdBlue in the wrong tank of a hire, lease or company car It's a vehicle you have had for a week. Your own vehicle either does without AdBlue or keeps it somewhere different, so nothing told you the AdBlue inlet sits just next to the diesel. Throughout Rhondda Cynon Taf, no one is immune. What it means: the same as the situations above, depending on whether it's run, with one more step. Many hire and company agreements require the owner's sign-off before repairs. Settling it before we turn up is faster, so ring the hire company or your fleet manager, and then us. Stuck by Temple Baptist, Graig Building or outside Pontypridd until someone replies, the vehicle stays turned off the whole time. ## Not sure it was AdBlue in your diesel tank, Graig? Sometimes the fair answer is "I think so". Which cap came off, you cannot say; meanwhile the bottle weighs lighter than it ought to, and a whiff of ammonia lingers by the filler. The gates of the local primary school in a hurry, say, or a friend's driveway over in Penygraigwen. Meaning? Drips around the inlet never touch the motor at all. If it is inside the diesel tank, though, it does. Turning on the vehicle won't tell you which, and if there is AdBlue in your tank it will pull it in. What to do: treat it as if it was put in. Do not start the car. Call us and describe what you saw; we would rather check a tank that turns out clean than drain one that has already been run. ## What every AdBlue drain in Graig has in common Whichever situation you are in, the job starts the same way. Our technicians come to the vehicle, whether it is on a forecourt, a driveway, the car park at The Tumble Inn or a side street close to Pontypridd Magistrates Court, and ask three things: what got in, roughly how much, and whether the engine has run. The price comes on the call, before a van leaves, and the answers set the job. AdBlue forms crystals and eats at certain metals used in fuel systems, and so it does not wash out unaided; that is why a full flush, after the drain, counts much more here than with petrol. Last come the fuel filter, flushed or replaced as needed; clean diesel; and a test of your vehicle. Where the motor hasn't run, expect roughly half an hour on site, for most cases. We start the car at the end. We make sure it runs correctly on clean diesel before we leave. Our technicians do the entire job where your car is, and permanent damage is very rare when it has been spotted soon. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Plenty of policies cover misfuelling, so look at yours as we head over. ## About Graig itself Graig is a suburban area situated on the riverside in Rhondda Cynon Taf, with a mix of terraced housing and local amenities. Graig lies close to the nearby communities of Maesycoed and Pontypridd, and is connected to the wider region via its proximity to Cardiff. Graig is characterized by its relatively low elevation of 99 metres above sea level, and its location near the River Taff. Graig is also within commuting distance of Cardiff, the capital city of Wales. ## AdBlue drains around Graig and across Rhondda Cynon Taf As a residential suburb, Graig has the same vans as the nearby towns — Pwll-Gwaun, Pontypridd — all the way across CF postcodes. Your location comes quickest from a postcode beginning CF37 1. Stopped en route to Ynysangharad Park, or right in the heart of Graig, your car remains where it is — there is no need to shift it at all. Draining happens on the spot. If you're somewhere hard to explain, near Tom Jones or close to a boundary, ring and ask instead of assuming. ## Your situation, summed up Not run yet: keep the car off then call. Whichever case applies, Petrol in Diesel handles from there on 0333 366 0103, across Rhondda Cynon Taf and in Graig — once you stop, switch off then phone, if it's run.