--- title: Explained: AdBlue in a Diesel Tank East Herringthorpe canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/east-herringthorpe-south-yorkshire/ location: East Herringthorpe county: South Yorkshire latitude: 53.439080 longitude: -1.323250 service: AdBlue in a Diesel Tank updated: 2026-10-05 --- # How It Occurs and How to Avoid It: AdBlue in a Diesel Tank in East Herringthorpe If AdBlue is already in your diesel tank, stop reading for a moment: leave your engine and your ignition off then ring 0333 366 0103. Caught before your engine runs, it is generally a drain and a thorough flush, done where the car is around East Herringthorpe. If you are reading before it has happened, the remainder of this page is about why it happens and how to make sure it does not. ## AdBlue in a diesel vehicle: two tanks, two fillers Plenty of newer diesels in Whinney Hill, like those in East Herringthorpe, run on two fluids; your engine gets only your diesel. AdBlue's own tank holds it, and from there it is sent to your exhaust, where a spray treats the fumes. Each tank has its own filler. Some motors keep the AdBlue filler in your boot or under the bonnet; plenty of others have both side by side under one flap. At the petrol pump, the diesel side gets filled constantly. Someone who has to stop and work out where it goes usually fills the AdBlue side, from a bottle, and much less frequently. That gap is where the slip lives. ## East Herringthorpe: how AdBlue in your diesel tank occurs Rarely is it carelessness: normally three things line up. On a drive off Brook Road before work, or in the car park outside The Park heading home: that's where the hurried top-up takes place. What is the reason for the rush? As AdBlue gets low the car tells you, and once it is empty, limp mode kicks in. The old car's cap is where the hand goes — but a rental car, a new motor or a company car puts the fillers somewhere else. That's the second thing: a strange car. Third, the spout goes in: a diesel filler or AdBlue one, it slides in just as easily, and after the pour begins, no part stops it. Whether it takes place in East Dene or the middle of East Herringthorpe, it's the same few seconds. ## How to tell the AdBlue filler from the diesel one Look at these first, on a forecourt around East Herringthorpe or a drive over in Eastwood. A few seconds, that's all. - Position can mislead; the cap doesn't. AdBlue ones tend to be blue or bear the word "AdBlue" — diesel ones usually don't. - Plenty of motors give AdBlue the smaller neck of the two. - Open the filler flap and check for a label — many vehicles mark what goes in which filler just there. - The handbook says where it is when the filler is not next to your diesel cap: the boot, or under the bonnet. - Whoever had it before knows. Ask when you pick up a rental or fleet car — at Rotherham Central's car park, say — not once the warning appears. ## AdBlue top-ups that never reach the diesel tank The day the light goes on, anywhere in South Yorkshire, use this routine. - Park and switch off. Not on a slope, not with the engine running, and not in a rush on the side of Mowbray Street. - Say "AdBlue" out loud as you unscrew the cap, after finding the AdBlue filler and read it. Daft, yes, yet it works. - Leave the diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Slowly does it, through the bottle's own spout, till it is full or the bottle is empty. - Only then, start the vehicle: close the cap, check once more, and make sure your diesel cap was never opened. If at stage two or three you find you have already poured into your diesel side, stop there. Skip step five altogether. ## Put AdBlue in your diesel tank around East Herringthorpe already? Then the order of things is short. Don't start your motor. Don't switch your ignition on; on many diesels that alone runs the fuel pump. AdBlue does not mix with diesel — it sinks to the bottom of the tank, where your fuel is sucked from — so do not top up with diesel to dilute it. Ask the attendants to help push your car away from the petrol pump if you are on a forecourt — the the nearest petrol station, the Asda or somewhere else. Leave it where it is if you're on your own driveway in East Herringthorpe. Already run? Pull over once it is safe, then turn off. The next junction means the place to leave if you're on the M1, under 3 miles from East Herringthorpe. A short hop across East Herringthorpe is a smaller job than a run towards Sheffield, under 10 miles away, so tell us about how far it went. ## When we get there around East Herringthorpe, what occurs? Wherever your car came to rest, be it by High Greave Infant School, beside Life In Our Woodlands or on your own drive, our van comes to it. Our engineers ask what went in, about how much, and whether it's run, since the replies determine this work and the price. Nobody heads out before you've heard the price over the phone. After that: draining, then a thorough flush of the whole system. Much more than with petrol, it counts with AdBlue: the crystals form, some metals are attacked, and none of it washes away on its own, no matter how long it is left. Once the fuel filter is cleaned — or replaced, if required — clean diesel is added, and finally the car gets tested. Then our technicians fire it up and make sure it runs correctly before we go. If your motor has not run, most jobs take about half an hour once we're there, using pumps that are safe on a working forecourt and quiet enough to use outside a house at night. No money upfront; you settle up on the day. At the end, a VAT invoice and a report from the engineer are handed to you for your insurer. Many insurance policies include misfuelling cover, so it is worth checking yours while we're on the way. ## About East Herringthorpe and where it is East Herringthorpe is a suburban area in South Yorkshire, situated near the River Don and approximately 7 miles from Sheffield. East Herringthorpe has a mix of housing types, but semi-detached homes are predominant in the area. East Herringthorpe is located at a relatively low elevation of 27 metres above sea level, and its riverside setting influences the local environment. East Herringthorpe is part of the larger urban area surrounding Sheffield, with nearby places including East Dene, Dalton, and Dalton Parva. ## AdBlue drains around East Herringthorpe and across South Yorkshire Being a residential suburb, East Herringthorpe shares its vans surrounding areas — Dalton, Dalton Parva — all the way across S postcodes and the wider area beyond. Give a postcode that starts S65 2, and the van gets there quickest. Your car does not need to shift. A drive, a lay-by on the way to Silverwood Miners Welfare Resource Centre, a side street close to High Greave Place Neighbourhood Centre: we drain it where it stands. Tricky to explain, like the back of Simply Skate Arena? By a county line? Checking beats assuming, so phone. ## The short version for East Herringthorpe motorists Read the cap before you pour. Petrol in Diesel empties it on the spot, anywhere across South Yorkshire, if AdBlue has gone in your diesel tank all the same — so leave the car off and call 0333 366 0103.