--- title: Explained: AdBlue in a Diesel Tank Pegswood canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/pegswood-northumberland/ location: Pegswood county: Northumberland latitude: 55.180780 longitude: -1.646840 service: AdBlue in a Diesel Tank updated: 2026-10-02 --- # Avoiding AdBlue in a Diesel Tank in Pegswood: Why It Occurs Keep the engine and ignition off and ring 0333 366 0103 first — the rest can wait if AdBlue is already in your diesel tank. Around Pegswood, catching it before your engine turns normally means draining and a full flush on the spot. If you're reading before it has happened, the remainder of this page is about why it takes place and how to make sure it does not. ## Why does AdBlue in a diesel vehicle need its own filler? Diesel feeds your motor — yet plenty of modern diesels seen around Pegswood and Stobhill hold another liquid too. The exhaust, not the motor, is where AdBlue ends up: sprayed into the gas to clean it, from a separate tank. Separate tanks, different fillers. Many of vehicles have a single flap for the two, whereas others put the AdBlue filler to your boot or under the bonnet. The diesel side is topped up at the pump all the time. The AdBlue side is filled far less commonly, usually from a bottle, and usually by somebody who has to stop and think where it goes. That gap is where the mistake lives. ## How does AdBlue in the diesel tank happen around Pegswood? Carelessness seldom explains it. What does is three things lining up at once. On a driveway off Longhirst Road before work, or in the car park outside Pegswood Community Welfare Centre on the way home: that's where the hurried top-up happens. Why the rush? As AdBlue gets low your car warns you, and once it's gone, limp mode kicks in. Then, the hand goes for the cap it knew on the old car — since a hire car, a new car or a company car puts the fillers somewhere your last one did not. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, and so nothing stops the tip once it has started. It's a few seconds, whether out in Bothal or right in the centre of Pegswood. ## How to tell the AdBlue filler from the diesel one Look at these before pouring, at a forecourt in Pegswood or a drive over in Stobhillgate. Seconds, that's all. - Read the cap rather than going by where it sits: AdBlue ones are regularly blue or marked "AdBlue", and diesel ones normally aren't. - Check the size: the smaller neck is, on many motors, the AdBlue one. - A label inside your fuel flap often says which fuel goes where, on plenty of cars. Look for it. - The handbook. If the filler is not by the diesel cap, it's in the boot or under the bonnet, and the handbook says which. - Whoever had it before will know. Check when you collect a rental or fleet car — at the nearest station's car park, perhaps — not when the warning appears. ## AdBlue top-ups that never reach your diesel tank When the light comes on, wherever across Northumberland, follow this routine. - Pull in on level, engine off, with time to spare — never rushing on the side of Pegswood Precinct. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick. - Leave the diesel cap on. If both sit under one flap, check the 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 a second time that your diesel cap never came off. Spot at step two or three that it has already gone into your diesel side? So stop right there. Never go on to step five. ## Pegswood: already put AdBlue in your diesel tank? Then the order of things is short. Don't start the engine. Leave the ignition off as well, since on plenty of diesels switching it on by itself starts the pump. Topping up with diesel won't weaken it: instead, AdBlue drops to the bottom of the tank, just where fuel is drawn from. If you are at a forecourt, whether it is the Morrisons or the BP, ask the attendants to help push the car clear of the petrol pump. Your own driveway in Pegswood is where it stays. Where the engine has run by now, stop somewhere safe then turn the car off. Pegswood sits under 15 miles from the A167(M); there, take the next junction. Tell us roughly how far it went: a run towards Newcastle upon Tyne, under 15 miles away, is a bigger job than a short hop across Pegswood. ## Pegswood: what happens when our engineers arrive Anywhere your car came to rest, be it by Pegswood Primary School, near Pegswood Community Hub or at home, the van travels to it. Both the work and the price rest on three replies — which fluid, which quantity, and if it has run — so our technicians ask. You hear that quote by phone, before anybody heads out. After that: a drain, then a full flush of the whole system. Much more than with petrol, it matters with AdBlue: crystals build up, some metals corrode, and nothing clears away on its own, no matter how long it is left. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and your car is tested. We don't leave until it has been fired up and is running properly. Most jobs are done in roughly half an hour after we get there, as long as the motor has not run — and the pumps we use are fine on a busy forecourt and quiet after dark beside a house. Payment is on the day, not upfront, and you receive the paperwork your insurer asks for: an engineer's report and a VAT invoice. Before we get there, have a look at your policy; plenty carry cover for misfuelling. ## About Pegswood, briefly Pegswood is a village in Northumberland, situated on the riverside at an elevation of 61 metres, with semi-detached housing being the predominant type of accommodation. Pegswood lies approximately 14 miles north of Newcastle upon Tyne and 261 miles north of London, near the villages of Bothal, Longhirst, and North Choppington. Pegswood has a population of around 2770 residents, making it a small but established community in the region. Pegswood's location near the river contributes to its scenic setting, with the surrounding countryside offering opportunities for outdoor activities. ## AdBlue drains across Northumberland, Pegswood included Throughout NE postcodes, the teams covering Pegswood — a village — work the surrounding locations too, North Choppington and Longhirst included. The van gets to you fastest with a postcode starting NE61 6. There's no need to shift the car. Draining happens on the spot, be it a driveway, a road by Pegswood Methodist Chapel, or a layby on the way to Pegswood Community Woods. If you are close to a boundary, or somewhere hard to explain like the back of Colliers Hill, ring and ask rather than assuming. ## In short, for Pegswood drivers Read the cap before you tip. AdBlue in your diesel tank regardless? Keep the vehicle switched off and phone 0333 366 0103; Petrol in Diesel drains it where it stands, throughout Northumberland.