--- title: Explained: AdBlue in a Diesel Tank Sedgley canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/sedgley-west-midlands/ location: Sedgley county: West Midlands latitude: 52.541270 longitude: -2.122070 service: AdBlue in a Diesel Tank updated: 2026-10-19 --- # How It Occurs and How to Avoid It: AdBlue in a Diesel Tank in Sedgley Leave your engine and ignition off and call 0333 366 0103 first — reading can wait when AdBlue is already in the diesel tank. A drain and a thorough flush, done right where the car sits in Sedgley, is usually what it takes if found before the motor runs. If you are reading before it has happened, the remainder of this page is about why it takes place and how to make sure it doesn't. ## AdBlue in a diesel car, and its separate tank Not one fluid but two: that is what many modern diesels near Sedgley and The Coppice carry, with diesel feeding your engine. Kept in a tank of its own, AdBlue is fed into your exhaust gas and cleans it. Separate tanks, separate fillers. Other motors put the AdBlue filler in the boot or under the bonnet; a lot more place both together behind one flap. Filling the diesel side at the petrol pump happens all the time. Far less frequently, the AdBlue side gets topped up — normally from a bottle, by someone working out where it goes. That gap is where the slip lives. ## How AdBlue in the diesel tank happens in Sedgley It is seldom carelessness. Three things tend to line up. To start with, the warning. Low AdBlue brings a warning from the vehicle, and letting it run out means limp mode — so a rushed top-up, maybe before work off Mill Bank, or at The Clifton on the way home after work. Then the car is strange. A hire car, a new vehicle or a company car puts the fillers where your last one didn't, and your hand hits for the cap it would have used on the old one. Nothing halts the tip once it has started, because a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. Woodsetton or the middle of Sedgley: it is the same few seconds in both. ## The AdBlue filler and your diesel filler: telling them apart A few seconds is all the checks take — so run through them before you pour anything, on a drive in Ruiton or a forecourt around Sedgley. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". The diesel cap normally isn't. Read it instead of going by position. - Look at the size: the smaller filler neck is, on plenty of motors, the AdBlue one. - Check inside the fuel flap: many motors carry a label there saying which fuel goes where. - The handbook. If your filler is not by your diesel cap, it is in your boot or under the bonnet, and the handbook says which. - The previous driver will know. Ask when you collect a hire car or company car — at Coseley's car park, say — rather than once the light comes on. ## How to top up without AdBlue in the diesel tank When the light comes on, wherever around West Midlands, follow this routine. - Not in a rush on the side of Bullring, not on a slope, not with your engine running: park then switch off first. - 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 diesel cap stays on. When the two share a flap, make sure it's shut before the bottle comes up. - Gently does it, through the bottle's own spout, until it is full or the bottle is empty. - Before starting your car, shut the cap and look again that the diesel cap never opened off. Spot at step two or three that it's already gone into the diesel side? Then stop right there. Don't carry on to step five. ## Already put AdBlue in your diesel tank around Sedgley? Then the order of things is short. Do not start your motor. The fuel pump runs on many diesels as soon as the ignition is switched on — and so keep it off. Filling up with diesel won't dilute it: instead, AdBlue drops to the base of that tank, just where the fuel is drawn from. The attendants at Shell, BP or another forecourt will usually lend a hand pushing the vehicle away if you ask. Your own drive around Sedgley is where it stays. Already run? Pull over when it is safe, then turn off. On the M6, under 10 miles from Sedgley, that means the next junction. Tell us about how far it went: a run towards Wolverhampton, under 5 miles away, is a bigger job than a short hop across Sedgley. ## When our engineers turn up around Sedgley, what occurs? Anywhere your car came to rest, whether by Queen Victoria Primary School, near Helpful Solutions Counselling Service or on your own drive, the van comes to it. Which liquid was put in, the quantity, and if it ran: our engineers ask since the replies decide both work and price. You get that quote on the phone, before anyone sets off. Draining the tank comes next, then a full flush of the system. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own — which is why that counts more here than with petrol. Testing is last: before that, clean diesel goes in, and your filter is flushed or changed if necessary. We don't leave until it has been fired up and is running properly. Using pumps fine on a busy forecourt and quiet enough for use outside a house at night, most jobs where your engine hasn't run need about half an hour after our technicians are there. Payment is on the day, not upfront, and you are given the documents your insurer wants: an engineer report and a VAT invoice. It is worth looking at your insurance as the van travels to you: misfuelling cover comes with many policies. ## About Sedgley Sedgley is a town in the West Midlands, situated approximately 3 miles north of Wolverhampton, and is characterised by its semi-detached housing stock. Sedgley sits at an elevation of around 228 metres, overlooking the surrounding countryside. Sedgley is close to nearby places such as Woodsetton, Cinder Hill, and Hurst Hill, and is home to a population of around 21,015 people. Sedgley is located inland, about 111 miles northwest of London. ## AdBlue drains across West Midlands, Sedgley included Over DY postcodes, the teams that cover Sedgley — a town — work the surrounding spots too, Hurst Hill and Cinder Hill among them. A postcode starting DY3 1 gets the van to you fastest. There's no need to shift the vehicle. The drain happens on the spot, whether a driveway, a street near All Saints Church, or a lay-by towards The Tenscore. Tricky to pin down, like the back of Sedgley Conservative Club? Close to a county line? Asking beats guessing, so phone. ## For Sedgley motorists, the short version Always, the cap; after that, the tip. Still AdBlue in your diesel tank? Petrol in Diesel will drain it wherever it stands, anywhere across West Midlands: switch the car off then phone 0333 366 0103.