--- title: AdBlue in a Diesel Tank Kelloe: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/kelloe-durham/ location: Kelloe county: Durham latitude: 54.719170 longitude: -1.475020 service: AdBlue in a Diesel Tank updated: 2026-10-28 --- # Kelloe: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? If AdBlue is already in your diesel tank, stop reading for a moment: leave your engine and the ignition off and phone 0333 366 0103. Usually, when the motor has not run, it's drained and thoroughly flushed where the vehicle sits in Kelloe. Here in advance? Then the rest covers how it comes about and what to prevent it happening at all. ## Why does AdBlue in a diesel motor need its own filler? Diesel feeds your motor — yet plenty of modern diesels seen about Kelloe and Garmondsway carry another fluid too. Stored in a tank of its own, AdBlue is fed into your exhaust gas to clean it. Every tank comes with one filler of its own. Some motors keep the AdBlue filler in your boot or under the bonnet; plenty more have both side by side under one flap. The diesel side is topped up at the pump all the time. Someone who has to stop and think where it goes normally fills the AdBlue side, from a bottle, and far less commonly. That gap is where the error lives. ## AdBlue in the diesel tank around Kelloe: how it occurs It is hardly ever carelessness. Three things tend to line up. The warning comes first. As AdBlue runs low your car tells you, and if it runs out altogether, the car goes into limp mode. So the top-up is done in a hurry: on a drive off Front Street before work, or in the car park at The Davy Lamp on the way home. Then, the hand goes for the cap it would have used on the old car — since a rental car, a new car or a company car places the fillers somewhere your last one did not. Third, the spout goes in: a diesel filler or AdBlue filler, it goes in as easily, and once the pour begins, no part stops it. It takes seconds, be it out in Davy Lamp or right in the heart of Kelloe. ## Telling the AdBlue filler from the diesel filler Whether a Kelloe forecourt or a driveway out in Coxhoe, take a few seconds over these before any is poured in. - The cap. The AdBlue cap is often blue, or marked "AdBlue". Your diesel cap usually is not. Read it instead of going by position. - The size. On many vehicles the AdBlue filler neck is the smaller of the two. - The flap. Look inside the fuel flap for a label. Plenty of cars say there which fuel goes where. - In your boot or under the bonnet: that's where your filler sits if it is not by the diesel cap, and the handbook says which. - The previous driver knows. Check as you pick up a rental or fleet car — at Durham's car park, perhaps — rather than when the light appears. ## Keeping AdBlue out of the diesel tank when you top up Wherever across Durham the light comes on, this is a routine for the day. - Pull in somewhere level, motor off, with time to spare — not rushing on the side of Woodland Crescent. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick. - The two behind a single flap? So confirm the cap on the diesel side is still closed before lifting the bottle. - Stop when your tank fills or the bottle is empty; before that, pour gently through its built-in spout. - Close the cap and check again. Make sure your diesel cap was never opened. Only then start the vehicle. If at step two or three you find you have already poured into the diesel side, stop there. Step five is out. ## Put AdBlue in the diesel tank around Kelloe already? The short order of things, beginning with no starting the engine. The fuel pump runs on many diesels as soon as the ignition is switched on — and so leave it off. Don't top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of your tank, where the fuel is sucked from. Ask the staff to help roll your car clear of the pump if you are at a forecourt — the Shell, the JET or anywhere else. If you're on your own drive in Kelloe, leave it where it is. When your engine has run by now, pull over somewhere safe and turn the car off. The next junction is where to come off when you're on the A1(M), under 3 miles from Kelloe. A short hop across Kelloe is a smaller job than a run towards Durham, under 10 miles away, and so tell us roughly how far it went. ## When our technicians get there in Kelloe, what happens? Our engineers come to your car wherever it has stopped, whether that's outside Kelloe Primary School, close to Kelloe War Memorial or on your own drive. Both the work and our price depend on three replies — what fluid, which quantity, and whether it has run — so our technicians ask. You hear that price on the phone, before anybody sets off. Then your tank is emptied and the system flushed thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it doesn't wash out on its own — which is why that counts more with AdBlue than with petrol. Once the filter has been flushed — or replaced, where required — clean diesel is added, and finally your vehicle is tested. Before leaving, our engineers start the engine and confirm that it's running smoothly. Most jobs are finished in about half an hour after our technicians arrive, provided the motor hasn't run — and the pumps we use are fine on a live forecourt yet quiet at night outside a house. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Many insurance policies include misfuelling cover, so it's worth checking yours whilst we're on the way. ## About Kelloe, for a moment Kelloe is a village situated on the riverside in County Durham, with a population of around 1108 people. Kelloe sits at an elevation of 134 metres, approximately 5.9 miles from the city of Durham. Kelloe has a mix of housing types, but semi-detached homes are the most predominant. Kelloe is located near other small settlements, including Davy Lamp, Church Kelloe, and Quarrington Hill. ## Kelloe and Durham: AdBlue drains across the area Over DH postcodes, the vans covering Kelloe — a village — work the surrounding spots too, Quarrington Hill and Church Kelloe among them. Fastest of all: quote a DH6 4 postcode to our van. Moving the vehicle is not needed. The drain takes place on the spot, be it a drive, a street by Trimdon Grange Disaster Memorial, or a lay-by towards Raisby Hill Grassland. Tricky to pin down, like the back of Saint Helens? Close to a county line? Asking is better than assuming, and so phone. ## Kelloe people: the short version Read the cap before you pour. Petrol in Diesel drains it where it stands, anywhere across Durham, if AdBlue has gone in the diesel tank regardless — so leave the vehicle off and ring 0333 366 0103.