--- title: Swannington: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/swannington-leicestershire/ location: Swannington county: Leicestershire latitude: 52.742530 longitude: -1.386480 service: AdBlue in a Diesel Tank updated: 2026-10-09 --- # How It Happens and How to Prevent It: AdBlue in a Diesel Tank in Swannington AdBlue already in the diesel tank? In that case set this page aside a moment, keep your ignition and engine off, then call 0333 366 0103. In Swannington, catching it before your motor turns normally leaves a drain and a thorough flush where it stands. The rest of this page covers why it takes place and how to make sure it doesn't — handy if you're reading before it has happened. ## AdBlue in a diesel motor, and its separate tank No single liquid but two: that's what plenty of newer diesels near Swannington and Thringstone run, with diesel for the motor. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Each tank has one filler of its own. Many of cars have a single flap for the two, whereas others move the AdBlue filler to the boot or under the bonnet. The diesel side is filled at the petrol pump all the time. Rarely filled, AdBlue normally goes in out of a bottle, poured by someone who has to stop and think what cap to use. It's in the gap that the mistake happens. ## AdBlue in the diesel tank in Swannington: how it happens It's hardly ever carelessness. Three things tend to line up. First, the warning. Low AdBlue brings a message from your car, and letting it run out leads to limp mode — so a rushed top-up, maybe before work off Church Lane, perhaps outside Station Inn on the way home after work. Then, the hand reaches for the cap it would have used on the old motor — since a hire car, a new motor or a company car places the fillers where your last one did not. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip once it has started. It's seconds, be it out in Coleorton Moor or right in the centre of Swannington. ## How to tell the AdBlue filler from the diesel one Check these first, at a forecourt in Swannington or a driveway over in Coleorton. Seconds, that's all. - Where it sits can mislead; the cap doesn't. AdBlue ones tend to be blue or bear the word "AdBlue" — diesel ones normally do not. - The size. On plenty of vehicles the AdBlue filler neck is the smaller of the two. - A label inside your fuel flap frequently says which fuel goes where, on many vehicles. Check for it. - The handbook shows where it is if your filler isn't next to the diesel cap: the boot, or under the bonnet. - The previous driver knows. Ask as you collect a rental or company car — at Loughborough's car park, say — rather than when the warning appears. ## Topping up AdBlue without it reaching the diesel tank The day the light comes on, anywhere in Leicestershire, use this routine. - Stop somewhere level, motor off, with time to spare — not rushing on the side of Burtons Lane. - Daft as it sounds, saying "AdBlue" out loud as you unscrew the cap works — after you've found the filler and read it. - The diesel cap stays on. Where the two sit under a flap, confirm it's shut before the bottle comes up. - Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Close the cap and check again. Make sure the diesel cap was never opened. Only then start your car. Find during the second or third step that AdBlue went into the diesel tank? That's where you stop. Step five stays off limits. ## Swannington: already put AdBlue in the diesel tank? Then the order of things is short. Do not start your engine. On many diesels the ignition alone runs the fuel pump, so don't switch the car on. Filling up with diesel will not weaken it: instead, AdBlue drops to the base of that tank, right where fuel is drawn from. If you're at a forecourt, whether it's the Shell or the another forecourt nearby, ask the staff to help roll the car away from the pump. Leave it where it is if you are on your own driveway around Swannington. Where the engine has run by now, pull over somewhere safe and turn the vehicle off. The next exit means the place to leave if you are on the M1, under 5 miles from Swannington. A short hop across Swannington is a smaller job than a run towards Leicester, under 15 miles away, and so tell us roughly how far it went. ## Our arrival around Swannington, and what happens next Anywhere the vehicle has stopped, be it outside Swannington Church of England Primary School, beside Hough Tower Mill or on your own drive, our van travels to it. Which fluid went in, the quantity, and if it ran: our engineers ask since those answers set the work and quote. No one sets off until you have heard our price over the phone. Emptying your tank comes next, followed by a thorough flush of the system. 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 the flush matters more here than with petrol. Filter cleaned or, if needed, replaced; clean diesel in; and then a check of your car. Before we go, we fire it up and check that it's running correctly. Most jobs are finished in about half an hour after our technicians arrive, provided the motor has not run — and the pumps our engineers use are safe on a busy forecourt yet quiet at night outside a house. No money in advance; you settle up on the day. At the end, the VAT invoice and the report from the engineer are handed to you for the insurer. Before we get there, have a look at your policy; plenty include cover for misfuelling. ## About Swannington Swannington is a small village in Leicestershire, situated in the East Midlands region of England, with a population of around 530 people. Swannington sits at an elevation of 122 metres, approximately 13 miles northwest of Leicester, and is characterised by its predominantly detached housing. Swannington is close to nearby places such as Coleorton Moor, New Swannington, and Peggs Green, and is about 100 miles northwest of London. Swannington remains a quiet, rural community with a strong sense of local identity. ## AdBlue drains around Swannington and across Leicestershire As a rural village, Swannington shares its vans surrounding places — New Swannington, Peggs Green — all the way across LE postcodes and the wider area beyond. Quickest of all: give a LE67 8 postcode for the van. The car doesn't need to shift. Draining happens right there, be it a drive, a street by St George, or a lay-by on the way to Coleorton Wood. Guessing won't help behind Whitwick and Coalville Leisure Centre, on a border, or somewhere awkward to describe; ring and ask. ## For Swannington drivers, the short version Always, the cap; then, the tip. If AdBlue has gone in the diesel tank regardless, leave it off then phone 0333 366 0103. Petrol in Diesel empties it where it stands, anywhere around Leicestershire.