--- title: AdBlue in a Diesel Tank Dunholme? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/dunholme-lincolnshire/ location: Dunholme county: Lincolnshire latitude: 53.301210 longitude: -0.468060 service: AdBlue in a Diesel Tank updated: 2026-10-06 --- # Preventing AdBlue in a Diesel Tank in Dunholme: Why It Happens Keep the motor and ignition off then ring 0333 366 0103 now — the rest can wait when AdBlue is already in the diesel tank. Caught before the motor runs, it is usually a drain and a thorough flush, done where your car is around Dunholme. 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 Many newer diesels in Sudbrooke, as well as Dunholme, run on two fluids; your engine gets just the diesel. AdBlue's own tank holds it, and from there it is sent to the exhaust, and there a spray treats the gas. Separate tanks, separate fillers. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in your boot or under the bonnet. Topping up the diesel side at the pump goes on constantly. Someone who has to stop and work out where it goes usually fills the AdBlue side, from a bottle, and much less frequently. It's in the gap that the mistake lives. ## AdBlue in your diesel tank in Dunholme: how it happens Rarely is it carelessness: usually three things line up. On a driveway off Honeyholes Lane before work, or in the car park at The Black Bull heading home: that is where the hurried top-up happens. What is the reason for the rush? As AdBlue runs low the car warns you, and if it's empty, limp mode follows. Then, the hand goes for the cap it knew on the old car — since a hire car, a new car or a company car places the fillers somewhere your last one didn't. 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. The same few seconds settle it, in the middle of Dunholme or out in Welton. ## Which filler is for AdBlue, and which for diesel? Be it a Dunholme forecourt or a drive out in Sudbrooke Park, take a few seconds on these before anything is poured in. - The cap. The AdBlue cap is frequently blue, or marked "AdBlue". Your diesel cap normally is not. Read it rather than going by where it sits. - Plenty of vehicles fit AdBlue the smaller filler of the two. - Look inside your fuel flap: many motors carry a label there showing which fuel goes where. - Can't see it beside the diesel inlet? In that case check below the bonnet or in your boot — the handbook will say which. - The previous driver will know. Ask as you pick up a hire car or company car — at Lincoln Central's car park, say — not when the warning comes on. ## Topping up AdBlue without it reaching your diesel tank On the day the warning appears — anywhere you are across Lincolnshire — a simple routine to follow. - Park then switch off. Not on a slope, not with the motor running, and not in a rush on the side of Barrett Grove. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - Leave your diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty. - Only after that, start your car: close the cap, check a second time, and make sure the diesel cap was never opened. If at step two or three you find you have already poured into your diesel side, stop there. Do not go on to step five. ## Dunholme: already put AdBlue in your diesel tank? Do not start the motor: that is where the short order of things begins. Do not switch the ignition on; on plenty of diesels that alone runs the fuel pump. Don't top up with diesel to dilute it: AdBlue does not mix with diesel, it sinks to the bottom of that tank, where the fuel is drawn from. The staff at UK, Lincoln Kiln Dried Logs or any forecourt will normally help pushing the car clear if you ask. At home around Dunholme? So your car remains put. If your motor has already run, stop as soon as it is safe and switch off. On the M180, under 25 miles from Dunholme, that means the next exit. Distance counts — a short hop across Dunholme is a smaller job than driving under 10 miles towards Lincoln — so tell us roughly how far it went. ## When our technicians turn up around Dunholme, what takes place? By Dunholme St Chad's Church of England Primary School, close to St Chad's Church or on your own driveway: wherever the car has stopped, our engineers come to it. Both the work and our price rest on three replies — which fluid, what amount, and if it's run — so our engineers ask. You hear that price on the phone, before anyone sets off. Your system is then cleaned thoroughly, after that tank is emptied. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own — which is why the flush counts more here than with petrol. Once the filter has been cleaned — or renewed, where needed — clean diesel goes in, and then your car is tested. We don't leave until it has been fired up and is running properly. Most jobs are done in roughly half an hour after our technicians get there, as long as the engine has not run — and the pumps our technicians use are safe on a busy forecourt yet quiet at night beside a house. Paying happens on the day, not upfront, and you receive 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 while we're on the way. ## About Dunholme, for a moment Dunholme is a village in Lincolnshire, situated near the River Witham and close to the city of Lincoln. Dunholme has a relatively low elevation of 17 metres above sea level and is surrounded by nearby places such as Welton, Scothern, and Welton Hill. Dunholme is characterized by its predominantly detached housing stock and is home to a population of approximately 1333 residents. ## AdBlue drains round Dunholme, and Lincolnshire beyond Dunholme is a village, and the teams that cover it also work the places near it, Scothern and Welton Hill among them, across the LN postcode area. Quote a postcode that starts LN2 3, and the van arrives fastest. Shifting the car is not necessary. A drive, a lay-by on the way to Dunholme Pinfold, a side street near Dunholme Village Hall: our technicians drain the car where it is. Ring and ask rather than guessing if you're near a border, or somewhere hard to describe, like the back of Welton Village Hall. ## In short, for Dunholme motorists Always, the cap; then, the tip. AdBlue in the diesel tank regardless? Keep it off then phone 0333 366 0103; Petrol in Diesel drains it where it stands, across Lincolnshire.