--- title: Bleary: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/bleary-county-down/ location: Bleary county: County Down latitude: 54.423030 longitude: -6.344950 service: AdBlue in a Diesel Tank updated: 2026-10-18 --- # Avoiding AdBlue in a Diesel Tank in Bleary: Why It Occurs Leave the motor and ignition off then phone 0333 366 0103 first — the rest can wait if AdBlue is already in your diesel tank. Caught before your engine runs, it is generally a drain and a thorough flush, done where the car is around Bleary. The rest of this page covers why it takes place and how to make sure it does not — handy if you are reading ahead of time. ## Why does AdBlue in a diesel motor need its own filler? No single fluid but two: that is what many modern diesels around Bleary and Drumnacanvy carry, with diesel for your engine. AdBlue's own tank keeps it, and from there it goes to the exhaust, where spraying treats the fumes. Each tank has its own filler. Under one flap, side by side: that is the layout on many motors. On others, AdBlue's filler sits beneath the bonnet or in your boot instead. The diesel side is filled at the petrol pump all the time. The AdBlue side is fuelled far less regularly, normally from a bottle, and usually by someone who has to stop and think where it goes. It is in the gap that the mistake happens. ## How AdBlue in your diesel tank happens in Bleary Three things tend to line up, and carelessness is rarely one of them. On a driveway off Heugh Road before work, or in the car park outside the pub in the village on the way home: that is where the rushed top-up takes place. Why the rush? As AdBlue runs low the car tells you, and if it is gone, limp mode follows. Then, your hand goes for the cap it would have used on the old car — because a rental car, a new motor or a company car puts the fillers where your last one didn't. Lastly, the bottle fits: diesel filler or AdBlue one, it goes in just as easily, and once the pour begins, no part halts it. The same few seconds decide it, in the middle of Bleary or out in Gibsons Hill. ## How to tell the AdBlue filler from the diesel one Look at these first, on a forecourt around Bleary or a drive over in Lurgan. Seconds, that's all. - The cap. The AdBlue cap is regularly blue, or marked "AdBlue". The diesel cap normally is not. Read it rather than going by where it sits. - Look at the size: the smaller neck is, on many motors, the AdBlue one. - Open the filler flap and check for a label — plenty of motors mark what belongs in which inlet just there. - The handbook. If the filler isn't by the diesel cap, it's in your boot or under the bonnet, and the handbook says which. - The person who drove the vehicle last. On a hire or company car collected from somewhere like the car park outside the nearest station, ask before you leave, not when the light comes on. ## AdBlue top-ups that never reach the diesel tank Wherever across County Down the light comes on, this is a routine for the day. - Turn off after you park — flat ground, motor off, and not rushed beside South Crescent on the verge. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it works. - Leave the diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle. - Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty. - Before starting the vehicle, shut the cap and look again that the diesel cap never came off. Find during the second or third stage that the bottle went into the wrong tank? That is where you stop. Stage five is out. ## Bleary: already put AdBlue in your diesel tank? What follows is a short order of things, beginning with no starting the engine. Don't switch your ignition on; on plenty of diesels that alone runs the fuel pump. Thinning it with more diesel won't work, since AdBlue sinks to the base rather than blending — and that is where your fuel is drawn from. At a forecourt — the nearest petrol station, another forecourt nearby or any other — the staff will usually help push your car clear, if you ask. Leave it where it is if you're on your own drive in Bleary. Already run? Pull over once it is safe, then turn off. The next junction means the place to come off if you are on the M77, over 50 miles from Bleary. Mileage matters — a quick hop across Bleary is a smaller job than heading under 15 miles towards Armagh — so say roughly how far it went. ## Bleary: what occurs when our technicians arrive We come to the vehicle wherever it has stopped, whether that is outside the local primary school, near the centre or on your own driveway. Both the work and our quote depend on three answers — what fluid, which quantity, and if it has run — so we ask. No one heads out until you've heard the price over the phone. Then the tank is drained and your system purged thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own — which is why that matters more with AdBlue than with petrol. Testing is at the end: before that, fresh diesel is added, and your filter is cleaned or replaced as needed. Next our engineers start the engine and confirm it runs properly before we leave. Most jobs are done in about half an hour once our technicians get there, provided your motor hasn't run — and the pumps we use are safe on a busy forecourt yet quiet after dark outside a house. Nothing in advance; you settle up that day. Afterwards, the VAT invoice and the report from the engineer are handed to you for the insurer. Wrong-fuel cover is included in many insurance policies — and so make use of the wait to look at yours. ## About Bleary and where it is Bleary is a small locality in County Down, situated inland at an elevation of 71 metres, approximately 13 miles from Armagh. Bleary is characterized by its semi-detached housing stock and is located near other settlements such as Gibsons Hill and Waringstown. Bleary sits within the wider Craigavon area, and its residents are around 327 miles from London. Bleary has a population of around 726 people. ## AdBlue drains around Bleary and across County Down Bleary is a small village, and our vans that cover it also work the towns around it, Waringstown and Craigavon among them, across the BT postcode area. A postcode starting BT63 5 gets our van to you fastest. Your car remains put. A driveway, a lay-by on the way to the green space at the edge of the village, a side street close to a street just off the centre: we drain it where it is. Ring and ask rather than assuming if you are near a boundary, or somewhere hard to describe, like the back of the far end of the built-up part. ## The short version for Bleary drivers Always, the cap; after that, the pour. AdBlue in the diesel tank after all? Keep the car switched off and ring 0333 366 0103; Petrol in Diesel drains it where it stands, throughout County Down.