--- title: AdBlue in a Diesel Tank Swalecliffe: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/swalecliffe-kent/ location: Swalecliffe county: Kent latitude: 51.363550 longitude: 1.070460 service: AdBlue in a Diesel Tank updated: 2026-10-13 --- # Swalecliffe: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? AdBlue already in the diesel tank? Then set this page aside for now, leave your ignition and motor off, and call 0333 366 0103. Normally, if the motor has not run, it's emptied and fully rinsed where the car is in Swalecliffe. Not happened yet? Below, the page explains the reasons it happens and the ways to prevent it altogether. ## AdBlue in a diesel motor, and its separate tank Many modern diesels on the roads about Swalecliffe and South Tankerton carry two liquids, not one. Diesel goes to your engine. The exhaust, not the engine, is where AdBlue goes: dosed into the fumes to clean them, from its own tank. There is a filler for each tank. Under one flap, next to each other: that's the arrangement on a lot of vehicles. On others, AdBlue's filler sits beneath the bonnet or in the boot instead. Topping up the diesel side at the petrol pump happens all the time. A driver who has to stop and think where it goes normally fills the AdBlue side, from a bottle, and much less regularly. The mistake grows in the gap between them. ## Swalecliffe: how AdBlue in your diesel tank happens Rarely is it carelessness: usually three things coincide. The warning comes first. As AdBlue runs low the car tells you, and if it runs out completely, your vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Edgar Close before work, or in the car park outside The Plough Inn on the way home. Then, your hand goes for the cap it would have used on the old vehicle — because a rental car, a new motor or a company car puts 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, and so nothing stops the pour after it has started. Chestfield or the middle of Swalecliffe: it is the same few seconds in both. ## The AdBlue filler and the diesel filler: telling them apart Look at these before pouring, on a forecourt in Swalecliffe or a drive out in Church Street. A few 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 caps normally do not. - The size. On many cars the AdBlue filler neck is the smaller of the two. - Lift the filler flap and check for a label — many motors show what goes in each inlet just there. - In the boot or under the bonnet: that's where the filler sits if it is not by your diesel cap, and the handbook says which. - Picking up a hire or company car, perhaps at the car park at Chestfield & Swalecliffe? Check with the person who drove the vehicle last before leaving, rather than once the light comes on. ## Keeping AdBlue out of your diesel tank when you top up The day the light goes on, wherever around Kent, use this routine. - Not in a rush on the side of St. John's Road, not on a slope, not with your engine running: park and switch off first. - Silly as it sounds, speaking "AdBlue" out loud as you unscrew the cap does the trick — after you have found your filler and read the cap. - The two behind one flap? Then make sure the lid on the diesel side is still shut before lifting the bottle. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Shut the cap, and check again — confirm your diesel cap stayed shut throughout. Only then, start the vehicle. If at step two or three you find you have already poured into the diesel side, stop there. Leave out stage five altogether. ## Swalecliffe: already put AdBlue in the diesel tank? Do not start your motor: that's where the short order of things begins. Keep the ignition off as well, because on many diesels switching it on by itself starts your pump. Topping up with diesel won't weaken it: instead, AdBlue drops to the bottom of your tank, right where fuel is taken from. The attendants at Esso, Sainsbury's or any forecourt will usually help to push the vehicle away when you ask. Leave it where it is if you're on your own driveway in Swalecliffe. Stop as soon as it is safe and switch off, if your engine has already run. On the M2, under 10 miles from Swalecliffe, that means the next exit. Tell us about how far it went: a run towards Canterbury, under 10 miles away, is a bigger job than a short hop across Swalecliffe. ## What happens when we arrive in Swalecliffe Wherever the vehicle came to rest, be it outside Swalecliffe Community Primary School, near Swalecliffe Community Centre or on your own drive, our van travels to it. Both the work and our price rest on three answers — what fluid, what quantity, and if it has run — so we ask. You get that price on the phone, before anyone heads out. Emptying that tank comes next, followed by a full flush of the fuel 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. A test comes at the end: before that, clean diesel goes in, and the filter is flushed or replaced if necessary. Before we leave, our technicians fire it up and confirm that it's running properly. With pumps safe on a working forecourt and quiet enough to use outside a house at night, most jobs in which the motor hasn't run take roughly half an hour after our technicians arrive. Paying is on the day, not upfront, and you are given the documents your insurer wants: an engineer report and a VAT invoice. Plenty of insurance policies include misfuelling cover, and so it's worth checking yours whilst we're on the way. ## About Swalecliffe, briefly Swalecliffe is a coastal suburban area in Kent, situated near the city of Canterbury and overlooking the Thames Estuary. Swalecliffe has a relatively low elevation of around 7 metres above sea level and is close to nearby places such as Chestfield and Tankerton. Swalecliffe is characterised by its predominant semi-detached housing stock and is home to a population of approximately 2803 residents. Swalecliffe is also within commuting distance to London, being around 52.6 miles away. ## AdBlue drains round Swalecliffe, and Kent beyond Swalecliffe is a residential suburb, and the vans that cover it also work the towns around it, Studd Hill and Tankerton among them, across the CT postcode area. Give a postcode beginning CT5 2, and our van arrives fastest. The car remains where it is. A drive, a lay-by on the way to Long Rock, a side street near St. John the Baptist: our technicians drain it where it is. Guessing won't help at the back of St John the Baptist, close to a boundary, or anywhere awkward to describe; ring and ask. ## The short version for Swalecliffe motorists Tip nothing until you have read the cap. Petrol in Diesel drains it where it stands, anywhere across Kent, if AdBlue has gone in the diesel tank regardless — and so leave the vehicle off then call 0333 366 0103.