--- title: Explained: AdBlue in a Diesel Tank Great Burgh canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/great-burgh-surrey/ location: Great Burgh county: Surrey latitude: 51.309650 longitude: -0.239910 service: AdBlue in a Diesel Tank updated: 2026-10-22 --- # Avoiding AdBlue in a Diesel Tank in Great Burgh: Why It Happens AdBlue already in the diesel tank? Then set this page aside for now, keep the ignition and engine off, then call 0333 366 0103. Caught before your motor runs, it's generally a drain and a thorough flush, done where the car is in Great Burgh. The remainder of this page covers why it takes place and how to ensure it does not — handy if you are reading before it has happened. ## AdBlue in a diesel motor: two tanks, two fillers Plenty of modern diesels around Langley Vale, like those in Great Burgh, run on two liquids; the engine gets only the diesel. The exhaust, not the engine, is where AdBlue goes: sprayed into the fumes to fresh them, from its own tank. There's a filler on every tank. Other cars put the AdBlue filler in your boot or under the bonnet; a lot of others have the two side by side behind one flap. Diesel gets filled on every filling station visit, week in, week out. Seldom filled, AdBlue normally comes from a bottle, poured by a driver who must stop and think what filler to use. It's in the gap that the error happens. ## Great Burgh: how AdBlue in your diesel tank occurs Three things tend to line up, and carelessness is rarely one of them. The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out completely, your vehicle goes into limp mode. So the top-up is done in a hurry: on a driveway off Tattenham Crescent before work, or in the car park at Tattenham Corner on the way home. The old car's filler is where your hand reaches — but a rental car, a new vehicle or a company car puts the fillers elsewhere. That is a second factor: a strange vehicle. Third, the bottle fits: diesel filler or AdBlue filler, it goes in as easily, and once the tip begins, no part stops it. It's seconds, be it out in Epsom Downs or bang in the heart of Great Burgh. ## How to tell the AdBlue filler from the diesel one Whether a Great Burgh forecourt or a driveway over in Nork, take a couple of seconds on these before anything is poured in. - Check the cap instead of going by where it sits: AdBlue ones are commonly blue or marked "AdBlue", and diesel ones usually aren't. - On plenty of motors, size tells: AdBlue gets the smaller filler neck. - The flap. Look inside your fuel flap for a label. Plenty of motors say there which fuel goes where. - In your boot or under the bonnet: that is where your filler sits if it is not by your diesel cap, and the handbook tells you which. - Whoever had it before will know. Ask when you collect a rental or fleet car — at Tattenham Corner's car park, say — rather than once the warning comes on. ## How to top up without AdBlue in the diesel tank When the light goes on, wherever around Surrey, use this routine. - Turn off once parked — flat ground, engine off, and not in a rush beside Downland Way at the roadside. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick. - Both under one flap? So make sure the lid on your diesel filler stays shut ahead of lifting the bottle. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start the car. Spot at step two or three that it's already gone into the diesel side? Then stop just there. Skip step five altogether. ## Put AdBlue in your diesel tank around Great Burgh already? Short order, then. Top of it: the motor remains unstarted. The fuel pump starts on plenty of diesels the moment the ignition goes on — so keep it off. Filling up with diesel won't weaken it: rather than mixing, AdBlue drops to the bottom of that tank, just where the fuel is drawn from. At a forecourt — Texaco, Asda or any other — the staff will normally help push your car away, when you ask. Your own driveway in Great Burgh is where it stays. Already started? Stop when it is sensible, then switch off. The next junction means where to leave if you're on the M25, under 3 miles from Great Burgh. Distance counts — a quick hop across Great Burgh is a smaller job than heading under 15 miles towards Westminster — so tell us roughly how far it went. ## Great Burgh: what happens when our technicians arrive We come to your car wherever it has stopped, whether that is outside Shawley Community Primary Academy & Nursery, close to Tattenhams Community Library or on your own drive. Those answers determine this work and the price, so our engineers ask what got in, about how much, and if it's run. During the call itself, you hear the quote — ahead of anything else. Next: a drain, then a full flush of the whole system. More than with petrol, it matters with AdBlue: crystals build up, certain metals are attacked, and nothing clears out unaided, no matter how long it is left. A test is last: before that, fresh diesel goes in, and the filter is cleaned or replaced if necessary. Then we fire it up and check it runs correctly before we go. If your motor has not run, most jobs take about half an hour once we are there, using pumps that are safe on a busy forecourt and quiet enough to use outside a house at night. The insurer usually wants the engineer's report and your VAT invoice, and you get both at the end. Payment comes on the day, with no money upfront. It is worth looking at your policy while we travel to you: misfuelling cover comes with many policies. ## About Great Burgh itself Great Burgh is a village in Surrey, situated inland at an elevation of 157 metres, approximately 14.5 miles from London. Great Burgh lies near several notable locations, including Epsom Downs and Burgh Heath, and is characterized by its predominantly semi-detached housing stock. Great Burgh is a relatively small community, with a population of around 2290 residents, and is close to the nearby city of Westminster. ## AdBlue drains in Great Burgh and across Surrey Over KT postcodes, our teams covering Great Burgh — a rural village — work the surrounding spots too, Burgh Heath and Woodcote included. Fastest of all: quote a KT18 5 postcode to our van. Moving the vehicle is not necessary. A driveway, a lay-by on the way to Epsom Downs, a side street near The Mound: our engineers drain the car where it stands. Assuming doesn't help at the back of St Mark, close to a boundary, or somewhere awkward to pin down; ring and ask. ## In short, for Great Burgh motorists Before you pour, read the cap. If AdBlue has gone in the diesel tank all the same, leave the vehicle off and phone 0333 366 0103. Petrol in Diesel empties it where it stands, anywhere in Surrey.