--- title: Explained: AdBlue in a Diesel Tank Churchtown canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/churchtown-derbyshire/ location: Churchtown county: Derbyshire latitude: 53.163520 longitude: -1.602030 service: AdBlue in a Diesel Tank updated: 2026-10-04 --- # AdBlue in a Diesel Tank in Churchtown: Why It Happens and How to Prevent It AdBlue already in the diesel tank? In that case set this page down a moment, keep the ignition and engine off, then call 0333 366 0103. A drain and a full flush, carried out just where your vehicle sits in Churchtown, is usually all it needs when caught before your engine runs. Reading in advance? In that case what follows covers how it comes about and how to prevent it ever happening. ## Two fillers, two tanks: AdBlue in a diesel car Diesel goes to your motor — yet many modern diesels seen round Churchtown and Stanton Lees carry a second liquid too. Stored in a tank of its own, AdBlue is sprayed into the exhaust stream and cleans it. Each tank has a filler of its own. Under one flap, side by side: that's the arrangement on many cars. Elsewhere, AdBlue's filler sits beneath the bonnet or in the boot instead. Diesel goes in at each filling station call-out, week in, week out. Much less often, the AdBlue side is topped up — normally from a bottle, by someone thinking about where it goes. That gap is where the slip lives. ## How does AdBlue in the diesel tank happen in Churchtown? Seldom is it carelessness: normally three things coincide. On a driveway off Church Road before work, or in the car park outside The Church Inn on the way home: that's where the hurried top-up takes place. Why the rush? As AdBlue runs low your car tells you, and once it's empty, limp mode kicks in. Next, the hand reaches for the cap it would have used on the old car — because a hire car, a new vehicle or a company car places the fillers somewhere your last one did not. A spouted bottle finds no obstacle at a diesel filler any more than at an AdBlue one. So the tip, once started, keeps on. Warrencarr or the middle of Churchtown: it takes the same few seconds in both. ## How to tell the AdBlue filler from the diesel one Check these first, on a forecourt around Churchtown or a driveway over in Two Dales. Seconds, that's all. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". The diesel cap usually isn't. Read it rather than going by where it sits. - Check the size: the smaller filler neck is, on plenty of cars, the AdBlue one. - A label inside the fuel flap frequently shows which fuel goes where, on many vehicles. Look for it. - In the boot or under the bonnet: that is where your filler sits if it is not by the diesel cap, and the handbook tells you which. - Picking up a hire or company car, say at the car park outside Matlock? Ask the person who drove it last before leaving, rather than when the light comes on. ## AdBlue top-ups that never reach your diesel tank When the light goes on, anywhere across Derbyshire, follow this routine. - Pull in on level, engine off, with time in hand — not rushing on the side of Laburnum Close. - Say "AdBlue" out loud as you unscrew the cap, once you find the AdBlue filler and reading it. Silly, perhaps, but it does the trick. - The diesel cap remains on. Where both share a flap, confirm it's shut before the bottle comes up. - Tip slowly, using the bottle's own spout. Stop when it's full or when the bottle is empty. - Only after that, start the car: close the cap, check again, and make sure the diesel cap was never opened. If at stage two or three you find you have already poured into the diesel side, stop there. Never go on to step five. ## Put AdBlue in the diesel tank around Churchtown already? Then the order of things is short. Do not start the motor. The fuel pump starts on many diesels as soon as your ignition goes on — and so leave it off. AdBlue does not mix with diesel — it sinks to the bottom of the tank, where the fuel is pulled from — so do not top up with diesel to dilute it. The staff at Texaco, A6 Truck Stop or another forecourt will usually help to push the car away if you ask. If you're on your own drive in Churchtown, leave the car where it stands. Already started? Pull over once it's sensible, then turn off. Churchtown sits under 15 miles from the M1; there, use the next exit. About how far did it go? Hopping across Churchtown is less work than a run of under 25 miles to Sheffield, so tell us. ## When our engineers arrive around Churchtown, what takes place? Wherever the vehicle has stopped, be it outside Darley Churchtown Church of England Primary School, beside St Helens or at home, our van comes to it. Our engineers ask what got in, roughly how much, and whether it has run, because those answers determine the work and our price. The price comes on the call, ahead of any van leaving. Draining that tank comes next, followed by a full flush of your system. With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own. Testing comes last: before that, clean diesel is added, and the filter is flushed or changed as needed. Before we leave, our technicians fire it up and make sure that it's running correctly. Most jobs are finished in roughly half an hour once we arrive, provided your motor hasn't run — and the pumps our engineers use are safe on a busy forecourt yet quiet at night beside a house. Payment is on the day, not upfront, and you are given the paperwork an insurer asks for: an engineer report and a VAT invoice. Misfuelling cover is part of plenty of insurance policies — and so use the wait to check yours. ## About Churchtown Churchtown is a suburban area in Derbyshire, situated on the riverside at an elevation of around 100 metres. Churchtown lies near the communities of Warrencarr, Darley Dale, and Darley Hillside, and is approximately 16 miles from Sheffield. Churchtown has a population of around 1812 people, predominantly living in semi-detached housing. Churchtown is also relatively close to the national transport network, being about 130 miles from London. ## AdBlue drains across Derbyshire, Churchtown included Darley Dale and Darley Hillside are among the towns around Churchtown, a residential suburb, that the same vans cover, throughout DE postcodes. Quote a postcode beginning DE4 2, and our van gets there quickest. The vehicle remains where it is. A drive, a lay-by on the way to Whitworth Park, a side street near Dale Road Methodist Church: we drain the car where it is. If you're close to a boundary, or somewhere hard to explain like the back of Darley Dale Waiting Room Museum, ring and ask rather than guessing. ## The short version for Churchtown motorists Before you tip, read the cap. AdBlue in the diesel tank regardless? Leave it switched off then call 0333 366 0103; Petrol in Diesel drains it where it stands, across Derbyshire.