--- title: Explained: AdBlue in a Diesel Tank Stanhope canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/stanhope-durham/ location: Stanhope county: Durham latitude: 54.749090 longitude: -2.011760 service: AdBlue in a Diesel Tank updated: 2026-10-17 --- # Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Stanhope AdBlue already in your diesel tank? Then set this page aside for now, leave your ignition and motor off, and ring 0333 366 0103. Caught before the engine runs, it's normally a drain and a thorough flush, done where the vehicle is around Stanhope. If you are reading before it has happened, the rest of this page is about why it takes place and how to make sure it does not. ## Two fillers, two tanks: AdBlue in a diesel motor Diesel feeds the engine — yet plenty of current diesels driven round Stanhope and Frosterley carry a second fluid too. AdBlue goes to the exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own. Each tank has its own filler. Plenty of vehicles have a single flap for the two, whereas some move the AdBlue filler to your boot or under the bonnet. At the petrol pump, your diesel side is topped up constantly. The AdBlue side is filled far less frequently, usually from a bottle, and usually by someone who has to stop and think where it goes. That gap is where the mistake lives. ## AdBlue in the diesel tank in Stanhope: how it takes place Carelessness seldom explains it. What does is three things lining up at once. The warning comes first. As AdBlue runs low the car tells you, and if it runs out completely, the car goes into limp mode. So the top-up is done in a hurry: on a driveway off Cross Hill before work, or in the car park at The Grey Bull on the way home. Then, your hand goes for the cap it knew on the old car — since a rental car, a new car or a company car places 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, so nothing stops the pour once it has started. It takes a few seconds, be it in Crawleyside or bang in the heart of Stanhope. ## Telling the AdBlue filler from your diesel filler Before you pour anything, whether on a drive in Eastgate or a forecourt around Stanhope, check these. They take a few seconds. - Colour and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap normally does not. Trust the cap, not where it sits. - Look at the size: the smaller neck is, on plenty of motors, the AdBlue one. - The flap. Look inside your fuel flap for a label. Many vehicles say there which fuel goes where. - In your boot or under the bonnet: that is where your filler sits if it's not by your diesel cap, and the handbook says which. - Ask the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park at the nearest station. ## Keeping AdBlue out of your diesel tank when you top up When the light comes on, wherever in Durham, follow this routine. - Pull in on level, motor off, with time in hand — not hurried on the side of Paragon Street. - Silly as it sounds, speaking "AdBlue" out loud as you unscrew the cap works — after you've found your filler and read it. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the vehicle on. - Finish when your tank fills or the bottle is empty; before that, tip slowly through the built-in spout. - Close the cap and check again. Make sure your diesel cap was never opened. Only then start the vehicle. If at stage two or three you find you have already poured into the diesel side, stop there. Step five is out. ## Already put AdBlue in the diesel tank around Stanhope? Don't start your motor: that is how the short order of things begins. The fuel pump starts on many diesels as soon as the ignition is switched on — so leave it off. Thinning it with more diesel won't work, since AdBlue settles to the base rather than mixing — and that's where your fuel is sucked from. The attendants at Weardale Fuel, another forecourt nearby or another forecourt will normally lend a hand to push your car clear when asked. Leave it where it is if you are on your own driveway around Stanhope. When the motor has run by now, pull over safely then turn the car off. Stanhope sits under 25 miles from the A1(M); there, use the first junction. Tell us about how far it went: a run towards Durham, under 25 miles away, is a bigger job than a short hop across Stanhope. ## When our technicians arrive in Stanhope, what occurs? Our van reaches your car wherever it has come to rest — your own driveway, near Stanhope Community Centre, or by Stanhope Barrington CofE Primary School. Both the work and the price rest on three answers — what liquid, what amount, and whether it has run — so we ask. You get that quote by phone, before anybody sets off. The system is then rinsed thoroughly, once the tank is drained. Not like petrol, AdBlue forms crystals and attacks some fuel-system metals, and neither washes away unaided. That is why it matters more. Once the fuel filter is flushed — or replaced, where required — fresh diesel goes in, and finally your car is tested. Before we go, our technicians start the engine and check that it's running properly. Unstarted vehicles usually need a half-hour visit from arrival. The equipment is fine on a live forecourt, and quiet enough for a driveway late at night. Payment is on the day, not upfront, and you receive the paperwork your insurer asks for: an engineer's report and a VAT invoice. It's worth looking at your insurance as the van travels to you: misfuelling cover is included with plenty of policies. ## About Stanhope, briefly Stanhope is a town situated in a riverside location in County Durham, with a population of around 1575 people. Stanhope is characterised by its terraced housing and sits at an elevation of 214 metres, surrounded by nearby places such as Crawleyside and Green Head. Stanhope is located 17.2 miles from the city of Durham and 237.2 miles from London, in the North East region of England. Stanhope remains a small but distinct town with its own community and amenities. ## AdBlue drains in Stanhope and across Durham Green Head and Hill End are among the places near Stanhope, a riverside town, that the same teams cover, over DL postcodes. Fastest of all: give a DL13 2 postcode for our van. Moving the car isn't necessary. We drain it where it is — a side street near Weardale Open Air Pool, a lay-by on the way to Greenfoot Quarry SSSI, a driveway. Tricky to explain, like the back of Stanhope Methodist Church? By a county line? Checking beats assuming, so phone. ## In short, for Stanhope people Tip no AdBlue until you've read the cap. Petrol in Diesel drains it where it stands, anywhere in Durham, if AdBlue has gone in the diesel tank anyway — so leave the vehicle off then ring 0333 366 0103.