--- title: Coton in the Elms: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/coton-in-the-elms-derbyshire/ location: Coton in the Elms county: Derbyshire latitude: 52.735300 longitude: -1.640580 service: AdBlue in a Diesel Tank updated: 2026-10-25 --- # Why It Happens and How to Prevent It: AdBlue in a Diesel Tank in Coton in the Elms Keep the motor and ignition off then phone 0333 366 0103 now — the rest can wait if AdBlue is already in your diesel tank. Normally, when the motor hasn't turned, it is drained and fully rinsed where the vehicle sits around Coton in the Elms. The remainder of this page covers why it occurs and how to ensure it does not — handy if you're reading ahead of time. ## AdBlue in a diesel motor, and its separate tank Diesel feeds the motor — but plenty of current diesels seen around Coton in the Elms and Linton hold another liquid too. Your exhaust, not the engine, is where AdBlue goes: dosed into the fumes to fresh them, from its own tank. Each tank has its own filler. Under one flap, next to each other: that is the arrangement on many motors. On others, AdBlue's filler sits beneath the bonnet or in your boot instead. At the petrol pump, the diesel side is topped up all the time. A driver who has to stop and work out where it goes usually fills the AdBlue side, from a bottle, and far less often. It is in that gap that the error lives. ## How does AdBlue in the diesel tank take place in Coton in the Elms? 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, your vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Church Street before work, or in the car park outside The Black Horse on the way home. New-to-you cars come second, too. Rentals, new motors and company cars place their fillers in new places, and habit reaches for the cap it used on the old one. Third, the bottle goes in: a diesel filler or AdBlue filler, it goes in as readily, and after the tip begins, no part stops it. Rosliston or the heart of Coton in the Elms: it is the same few seconds either way. ## Telling the AdBlue filler from your diesel filler Look at these before pouring, on a forecourt around Coton in the Elms or a drive out in Coton Park. A few seconds, no more. - Check the cap instead of going by where it sits: AdBlue ones are commonly blue or marked "AdBlue", and diesel caps normally are not. - On plenty of vehicles, the size gives it away: AdBlue gets the smaller filler neck. - The flap. Look inside your fuel flap for a label. Many motors say there which fuel goes where. - In the boot or under the bonnet: that is where the filler is if it is not by your diesel cap, and the handbook tells you which. - Whoever had it before knows. Ask when you pick up a rental or fleet car — from Burton-On-Trent's car park, say — rather than once the light comes on. ## Topping up AdBlue without it reaching your diesel tank On the day the warning appears — anywhere you are around Derbyshire — a routine to use. - Park then switch off. Not on a slope, not with your motor running, and not in a rush on the side of Glebe Close. - Daft as it sounds, saying "AdBlue" aloud as you unscrew the cap works — once you have located the filler and read the cap. - The two under one flap? So make sure the cap on your diesel filler is still closed before lifting the bottle. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Before starting your car, shut the cap and check a second time that your diesel cap never came off. Spot at step two or three that it has already gone into your diesel side? Then stop right there. Leave out step five entirely. ## Coton in the Elms: already put AdBlue in the diesel tank? Then the order of things is short. Don't start the motor. Leave your ignition off as well, since on plenty of diesels it alone starts the pump. Don't top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of the tank, where the fuel is sucked from. The staff at the nearest petrol station, JET or another forecourt will usually lend a hand pushing the vehicle clear if you ask. Leave it where it is if you're on your own drive around Coton in the Elms. Already run? Pull over when it's sensible, then switch off. On the M42, under 5 miles from Coton in the Elms, that means the next exit. Mileage counts — a short hop across Coton in the Elms makes a smaller job than heading under 10 miles towards Lichfield — so tell us about how far it went. ## Our arrival in Coton in the Elms, and what happens next Anywhere the car has stopped, be it outside Coton-in-the-Elms Cof E Primary School, beside St Mary's Church or on your own drive, our van comes to it. The answers determine the work and our quote, and so we ask what went in, about how much, and if it's run. During the call itself, you are told our price — ahead of anything else. Next: draining, then a full flush of the whole system. More than with petrol, it matters with AdBlue: the crystals build up, some metals corrode, and nothing washes away unaided, no matter how long it is left. A test is at the end: before that, fresh diesel goes in, and your filter is cleaned or replaced as needed. After that we start it and make sure it runs properly before we go. Most jobs are finished in roughly half an hour after our engineers get there, provided the motor hasn't run — and the pumps our technicians use are fine on a live forecourt and quiet after dark 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 is worth checking yours whilst we are on the way. ## About Coton in the Elms, for a moment Coton in the Elms is a village in southern Derbyshire, situated near the River Trent and close to the Staffordshire border. Coton in the Elms has a population of around 860 people and is characterized by semi-detached housing. Coton in the Elms sits at an elevation of 89 metres, near the villages of Rosliston and Caldwell, and is within commuting distance of Lichfield. Coton in the Elms is located about 106 miles northwest of London, in the East Midlands region. ## AdBlue drains across Derbyshire, Coton in the Elms included Coton in the Elms is a village, and our teams that cover it also work the places around it, Caldwell and Lullington among them, across the DE postcode area. A postcode starting DE12 8 gets our van to you fastest. The vehicle stays where it is. A driveway, a lay-by on the way to Coton in the Elms Recreation Ground, a side street near Coton in the Elms Community Centre: we drain the vehicle where it stands. Tricky to explain, like the back of Rosliston Village Hall? By a border? Checking beats guessing, and so ring. ## The short version for Coton in the Elms people First, the cap; after that, the tip. Still AdBlue in the diesel tank? Petrol in Diesel will empty it wherever it stands, wherever across Derbyshire: keep it off then phone 0333 366 0103.