--- title: Explained: AdBlue in a Diesel Tank Wittersham canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/wittersham-kent/ location: Wittersham county: Kent latitude: 51.016230 longitude: 0.704000 service: AdBlue in a Diesel Tank updated: 2026-10-18 --- # Why It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Wittersham AdBlue already in the diesel tank? Then set this page aside a moment, leave the ignition and engine off, then ring 0333 366 0103. A drain plus a thorough flush, carried out just where the car stands in Wittersham, is usually what it needs if found before the motor runs. Here in advance? Then what follows explains how it happens and what to stop it happening at all. ## AdBlue in a diesel motor, and its separate tank Plenty of modern diesels in Moons Green, like those in Wittersham, carry on two fluids; your engine takes just your diesel. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Every tank comes with a filler of its own. Under one flap, side by side: that's the arrangement on many motors. On others, AdBlue's filler is beneath the bonnet or in the boot instead. Diesel gets filled on each filling station call-out, again and again. Someone who has to stop and work out where it goes usually fills the AdBlue side, from a bottle, and far less frequently. It is in the gap that the error lives. ## How AdBlue in the diesel tank takes place around Wittersham Three things tend to come together, and carelessness is rarely one of them. On a drive off Poplar Road before work, or in the car park outside The Swan on the way home: that is where the hurried top-up happens. Why the rush? As AdBlue gets low the car warns you, and if it is empty, limp mode follows. Then, your hand reaches for the cap it would have used on the old motor — since a rental car, a new car or a company car places the fillers where your last one didn't. Lastly, the bottle fits: diesel filler or AdBlue one, it goes in just as easily, and once the tip starts, nothing halts it. It takes a few seconds, whether in The Stocks or right in the heart of Wittersham. ## The AdBlue filler and your diesel filler: telling them apart Before you pour anything, whether on a drive in Stone Corner or a forecourt around Wittersham, check these. They take a couple of seconds. - Check the cap rather than going by position: AdBlue ones are often blue or marked "AdBlue", and diesel ones usually are not. - Plenty of vehicles give AdBlue the smaller filler of the two. - The flap. Look inside the fuel flap for a label. Many motors say there which fuel goes where. - The handbook. If your filler isn't by your diesel cap, it is in your boot or under the bonnet, and the handbook says which. - Check with the person who drove it last — before you leave, not when the light comes on — if you pick up a hire or company car from somewhere like the car park at Rye. ## Keeping AdBlue out of your diesel tank when you top up A routine for the day the light comes on, wherever in Kent that is. - Not in a rush on the side of Swan Cottages, not on a slope, not with your motor running: park and 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 two under one flap? Then make sure the lid on your diesel side is still closed before raising the bottle. - Finish when that tank is topped up or the bottle is empty; before that, tip slowly using the built-in spout. - Close the cap, and check again — making sure the diesel cap remained closed throughout. Only then, start the vehicle. Find at stage two or three that it has already gone into the diesel side? So stop just there. Never go on to step five. ## AdBlue in the diesel tank already, around Wittersham? Brief list, then. First: your motor remains unstarted. Don't switch the ignition on; on plenty of 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 pulled from — so don't top up with diesel to thin it. If you're on a forecourt, whether it's the JET or the BP, ask the attendants to help roll the vehicle away from the pump. If you are on your own drive around Wittersham, leave the vehicle where it sits. If your motor has already run, stop as soon as it is safe and switch off. Wittersham lies under 15 miles from the M20; there, use the first junction. Roughly how far did it go? Crossing Wittersham is smaller work than a run of under 25 miles towards Canterbury, so tell us. ## Wittersham: what occurs when we arrive Our engineers come to your car wherever it has stopped, whether that is outside Wittersham Church of England Primary School, close to Wittersham War Memorial or on your own driveway. Those replies settle this work and the quote, so we ask what went in, roughly how much, and if it's run. During the call itself, you hear the price — ahead of dispatch. Draining that tank comes next, followed by a thorough flush of your system. Much more than with petrol, it matters with AdBlue: the crystals form, certain metals are attacked, and none of it clears away unaided, no matter how long it is left. Testing comes last: before that, fresh diesel goes in, and the filter is flushed or replaced as needed. We don't go until it has been started and is running properly. With pumps fine on a working forecourt and quiet enough to use outside a house at night, most jobs in which your engine hasn't run need roughly half an hour after our engineers are there. No money upfront; you settle up on the day. Afterwards, the VAT invoice and the report from the engineer go to you for your insurer. It is worth checking your policy as the van travels to you: misfuelling cover comes with plenty of policies. ## About Wittersham and where it is Wittersham is a rural village in Kent, situated inland at an elevation of around 48 metres, and is located approximately 49 miles from London. Wittersham has a population of around 1172 people and is characterised by predominantly detached housing. Wittersham is near to several smaller settlements, including The Stocks, Acton, and Peening Quarter, and is about 24 miles from the city of Canterbury. ## AdBlue drains around Wittersham, and Kent beyond Being a rural village, Wittersham shares its vans surrounding places — Acton, Peening Quarter — right through TN postcodes and the surrounding area around them. Our van gets to you fastest with a postcode starting TN30 7. Your car does not need to shift. We drain it where it is — a side street close to Wittersham Village Hall, a lay-by on the way to Coronation Field, a drive. Awkward to explain, like the back of St. John the Baptist? Close to a border? Checking is better than guessing, so phone. ## Wittersham drivers: the short version Before you pour, read the cap. AdBlue in the diesel tank after all? Keep the vehicle switched off and phone 0333 366 0103; Petrol in Diesel empties it on the spot, across Kent.