--- title: What Now? AdBlue in a Diesel Tank Pontllanfraith canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/pontllanfraith-caerphilly/ location: Pontllanfraith county: Caerphilly latitude: 51.656400 longitude: -3.184270 service: AdBlue in a Diesel Tank updated: 2026-10-13 --- # What Now? AdBlue in the Diesel Tank in Pontllanfraith What to do about AdBlue in a diesel tank depends on one thing more than any other: whether the motor has run since it went in. Over in Gelligroes or right around Pontllanfraith, an unrun motor should stay that way. Keep nothing on, ring 0333 366 0103, then count on a thorough flush plus a drain, done just where the car sits around Pontllanfraith. If it's run, stop as soon as it is safe and switch off. It's a bigger job, yet stage one does not change. Find the situation below that matches yours, wherever in Caerphilly it happened. ## On a Pontllanfraith 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. It might be the Texaco, or the Sainsbury's, or a different station around Pontllanfraith. The point: of every spot to find out, this is the best. Nothing has drawn it in, so the AdBlue stays just inside the tank. What to do: don't get back in and start the car to clear the petrol pump. Ask the attendants to help you push the vehicle into a parking spot, keep the till receipt or the bottle, and ring us from the forecourt. Draining it there at the pump is possible if it can't be shifted, since the equipment is explosion-proof. ## At home around Pontllanfraith with AdBlue in the diesel tank The warning light had been on for days. Only by the recycling, the empty bottle in your hand, did you look back at the cap you'd used on the drive. Homes just off Llanarth Road are caught out as often as everywhere else. What it means: if you haven't driven since, this is almost as good as the forecourt. At the floor of the tank is exactly where AdBlue stays, because it will not mix with diesel — and a night passing makes no difference. Put the keys in the house overnight — otherwise a person may take it off first thing — then call us. Out in Cwmnantyrodyn or here around Pontllanfraith, the drain is done at your drive. Night-time drains outside a house are fine: the pumps are quiet. ## AdBlue in a diesel and already driving in Pontllanfraith? Rough running, smoke, lost power or a lit dashboard arrived a mile or two beyond the fill. Anywhere along Penmaen Road or else on the road towards Newport — under 10 miles away. Put simply: the AdBlue has been sucked through the system. The injection pump and each injector see it too on a bigger trip, after the filter and pipework have it. More miles, more restarts: further it goes. Next: find a safe spot, stop, then switch your motor off. Leave by the next junction — not the services further along — if you are on the M4, under 10 miles from Pontllanfraith. No trial starts: clearing itself is not something AdBlue will do. Phone, saying how far the vehicle went. ## A hire or company car with AdBlue in the wrong tank? You have just had this vehicle for days. On your own car, AdBlue is absent or elsewhere. On this one, its inlet is just next to your diesel inlet — news to you. Across Caerphilly, nobody is immune. The upshot: exactly as above, split by whether it ran, but with an added stage. The owner often needs to approve the work, under many rental and company contracts. Do this: hire firm or your fleet manager first, us next, since settling it beforehand cuts time. If you are stuck in the car park at Hengoed, or by Pontllanfraith Methodist Church, while you wait for an answer, leave your car off. ## Not sure it was AdBlue in the diesel tank, Pontllanfraith? Honestly, the best answer might be that you think it did. The bottle is lighter than it should be, there's 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 hurry, perhaps, or someone's driveway over in Pentwyn-mawr. Meaning? Spills outside the inlet don't reach the engine at all. A diesel tank with AdBlue in it is a different matter. Firing up your car cannot tell you which, and if there is AdBlue in that tank it will draw it in. Next: assume it got in, then leave the engine off. Ring us and describe what you saw; we would rather check a tank that turns out free of AdBlue than drain one that has already been run. ## Each AdBlue drain around Pontllanfraith shares these stages Each case has the same start to the work. Three things come once we reach your car — at a forecourt, a drive, a road beside Libanus Lifestyle Centre or the car park outside Bird in Hand: the fluid, the amount, and if the motor has run. Answers shape the work; the price comes on the call while nobody has left yet. Emptying that tank comes next, followed by a careful flush — more vital after urea than with petrol, because crystals and corrosion won't go on their own, no matter how long it sits. Then is the fuel filter — cleaned, or swapped when necessary — then clean diesel, and a test of your vehicle. If your engine has not run, most jobs take about half an hour once we're there. Last, we fire it up. Our technicians make sure it runs smoothly on fresh diesel before we leave. The entire job is done where the vehicle is, and if it's spotted quickly, long-term damage is very unusual. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Many policies include misfuelling, so check yours while the van travels. ## About Pontllanfraith itself Pontllanfraith is a town situated in the Caerphilly county borough of Wales, located on the banks of a river at an elevation of 139 metres. Pontllanfraith lies approximately 9 miles north of Newport and is part of a network of communities including Cwmnantyrodyn, Penllwyn, and Woodfieldside. Pontllanfraith has a population of around 12,187 people, predominantly living in semi-detached housing. Pontllanfraith is also relatively close to major cities, with London being around 131 miles away. ## AdBlue drains in Pontllanfraith, and across Caerphilly too Pontllanfraith is a riverside town, and the same teams that cover it work the towns near it too, Penllwyn and Woodfieldside among them, across the NP postcode area. The location comes quickest from a postcode that starts NP12 2. Central Pontllanfraith or a layby near Primary Field Welfare Ground: wherever it sits, your car never needs to move an inch for us. Our van drains it in place. Guessing won't help beside Blackwood Library, close to a county line or somewhere awkward to describe; ring and ask. ## Your scenario, summed up Where it hasn't run, ring and keep it that way. Run by now: stop, power down, phone 0333 366 0103. Petrol in Diesel handles the remainder, in Pontllanfraith or wherever in Caerphilly.