--- title: Explained: AdBlue in a Diesel Tank Willesborough Lees canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/willesborough-lees-kent/ location: Willesborough Lees county: Kent latitude: 51.145300 longitude: 0.905440 service: AdBlue in a Diesel Tank updated: 2026-10-06 --- # Preventing AdBlue in a Diesel Tank in Willesborough Lees: Why It Occurs Pause here a minute if your diesel tank already holds AdBlue in it: ignition off, motor off, then ring 0333 366 0103. Usually, when the engine has not turned, it is emptied and thoroughly purged where your vehicle is in Willesborough Lees. If you are reading before it has happened, the remainder of this page is about why it takes place and how to make sure it does not. ## AdBlue in a diesel car, and its separate tank Plenty of modern diesels around Sevington, like those in Willesborough Lees, carry on two fluids; your engine takes just your diesel. The exhaust, not your motor, is where AdBlue goes: dosed into the fumes to clean them, from a separate tank. Every tank has one filler of its own. Many of motors share a single flap for both, while others move the AdBlue filler to your boot or under the bonnet. At the petrol pump, your diesel side is topped up constantly. The AdBlue side is fuelled far less commonly, usually from a bottle, and usually by somebody who has to stop and think where it goes. The mistake lives in that gap. ## AdBlue in the diesel tank around Willesborough Lees: how it occurs Three things tend to line up, and carelessness is rarely one of them. Hurry comes from the warning. The car tells you as AdBlue runs low, and an empty tank sends it into limp mode — so the top-up gets done quickly, before work on a driveway off Abbey Way, or heading home in the car park at Hooden Smokehouse & Cellar. New-to-you motors are second, too. Rentals, new cars and company vehicles place their fillers differently, and habit reaches for the cap it used on the old one. A spout-topped bottle finds no resistance at a diesel filler no more than at an AdBlue one. So the pour, once begun, keeps on. The same few seconds settle it, in the middle of Willesborough Lees or out in Willesborough. ## How to tell the AdBlue filler from the diesel one A few seconds is all the checks take — so run through them before you tip anything, on a drive in New Town or a forecourt around Willesborough Lees. - Blue and marking: an AdBlue cap is often blue, or says "AdBlue", where a diesel cap normally does not. Trust the cap, not where it sits. - The size. On many cars the AdBlue filler neck is the smaller of the two. - A label inside your fuel flap often says which fuel goes where, on many motors. Check for it. - The handbook. If the filler isn't by your diesel cap, it is in your boot or under the bonnet, and the handbook says which. - Collecting a hire or company car, perhaps at the car park outside Ashford International? Ask whoever drove the vehicle last before leaving, rather than when the light comes on. ## Keeping AdBlue out of the diesel tank when you top up A routine for the day the light comes on, wherever around Kent that is. - Not in a rush on the side of Silver Hill Road, not on a slope, not with the engine running: park and switch off properly. - Find the AdBlue filler, check the cap, and say the name "AdBlue" out loud as unscrewing it. It seems daft. It works. - The diesel cap remains on. When the two sit under a flap, make sure it is shut before the bottle comes up. - Stop when that tank fills or the bottle is empty; before that, tip slowly using its own spout. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start your car. Stop there if you find, at stage two or three, that you have already poured into your diesel side. Do not go on to stage five. ## Put AdBlue in the diesel tank around Willesborough Lees already? Then the order of things is short. Do not start your engine. On many diesels your ignition alone runs the fuel pump, so don't switch the car on. Diluting it with more diesel fails, because AdBlue sinks to the base instead of mixing — and that is where the fuel is pulled from. At a forecourt — BP, Tesco or any other — the staff will normally help push your car away, when you ask. Your own drive around Willesborough Lees is the place it should stay. Already started? Stop when it's sensible, then turn off. Come off the M20 — under a mile out of Willesborough Lees — at the next junction. Mileage counts — a short hop across Willesborough Lees makes a smaller job than driving under 15 miles to Canterbury — so tell us roughly how far it went. ## What happens when our technicians get there around Willesborough Lees The van reaches the car wherever it stopped — your own driveway, near Christ Church Willesborough, or by Willesborough Infant School. Both the work and the price rest on three answers — which fluid, which amount, and if it has run — so we ask. During the phone call itself, you are told the price — ahead of dispatch. Then that tank is drained and your system purged thoroughly. 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. The filter cleaned or, where needed, replaced; clean diesel in; and then a check of the vehicle. Before we leave, our technicians fire it up and confirm that it is running properly. Using pumps fine on a busy forecourt and quiet enough for use outside a house at night, most jobs where the motor has not run need about half an hour once we are there. Nothing in advance; you settle up that day. Afterwards, a VAT invoice and the report from the engineer go to you for the insurer. It is worth checking your insurance as the van travels to you: misfuelling cover comes with many policies. ## About Willesborough Lees and where it is Willesborough Lees is a suburban area situated on the riverside in Kent, with an elevation of 43 metres. Willesborough Lees lies near the town of Ashford and the city of Canterbury, which is approximately 11.9 miles away. Willesborough Lees has a mix of housing types, but semi-detached homes are the most predominant. Willesborough Lees is located close to other nearby places, including Willesborough and Hinxhill. ## AdBlue drains around Willesborough Lees and across Kent Over TN postcodes, our teams covering Willesborough Lees — a residential suburb — work the nearby places too, Hinxhill and Hinxhill Park included. Quickest of all: quote a TN24 0 postcode for our van. There's no need to shift the vehicle. Anywhere it sits — near Statue of William Harvey, in a lay-by en route to Broomfields, at home — that's where it gets cleared. Awkward to pin down, like the back of Kingfisher Blinds? Close to a county line? Asking is better than assuming, so phone. ## For Willesborough Lees motorists, the short version Read the cap before you pour. AdBlue in your diesel tank regardless? Leave the car off and call 0333 366 0103; Petrol in Diesel empties it on the spot, throughout Kent.