--- title: Explained: AdBlue in a Diesel Tank Sherford canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/sherford-somerset/ location: Sherford county: Somerset latitude: 51.002540 longitude: -3.114960 service: AdBlue in a Diesel Tank updated: 2026-10-12 --- # Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Sherford AdBlue already in your diesel tank? In that case put this page aside a moment, leave your ignition and motor off, and call 0333 366 0103. A drain plus a full flush, done just where the car sits in Sherford, is usually all it needs when found before your engine runs. The remainder of this page covers why it occurs and how to make sure it does not — useful if you're reading ahead of time. ## AdBlue in a diesel car: two tanks, two fillers Plenty of newer diesels around Comeytrowe, as well as Sherford, carry on two liquids; the engine gets just your diesel. Your exhaust, not your engine, is where AdBlue ends up: dosed into the fumes to fresh it, from a separate tank. There is a filler for each tank. Under one flap, side by side: that's the arrangement on many vehicles. On others, AdBlue's filler is beneath the bonnet or in your boot instead. Topping up your diesel side at the petrol pump goes on constantly. Much less often, the AdBlue side is filled — mostly from a bottle, by someone working out where it goes. That gap is where the mistake lives. ## AdBlue in the diesel tank around Sherford: how it occurs Carelessness seldom explains it. What does is three things coming up together. On a drive off The Drive before work, or in the car park outside The Vivary Arms on the way home: that is where the rushed top-up happens. Why the rush? As AdBlue gets low the vehicle tells you, and if it's empty, limp mode follows. Next, your hand reaches for the cap it knew on the old vehicle — since a rental car, a new motor or a company car places the fillers where your last one did not. No part stops the tip after it has started, because a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. It takes seconds, be it out in Haines Hill or bang in the heart of Sherford. ## Telling the AdBlue filler from the diesel filler Look at these first, at a forecourt around Sherford or a driveway out in Trull. A few seconds, that's all. - Where it sits misleads; the cap doesn't. AdBlue ones are often blue or carry the name "AdBlue" — diesel ones normally do not. - The size. On plenty of motors the AdBlue filler neck is the smaller of the two. - The flap. Look inside the fuel flap for a label. Many motors say there which fuel goes where. - In the boot or under the bonnet: that is where your filler is if it's not by the diesel cap, and the handbook tells you which. - Ask the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park outside Taunton. ## How to top up without AdBlue in the diesel tank Anywhere around Somerset the light comes on, here is a routine for that day. - Park then switch off. Not on a slope, not with your motor running, and not in a rush on the side of Batts Park. - Find the AdBlue filler, read the cap, and speak the word "AdBlue" aloud as you unscrew it. It sounds daft. It works. - Both under a single flap? So confirm the lid on your diesel side is still closed ahead of lifting the bottle. - Finish when your tank fills or the bottle runs dry; until then, pour slowly through its own spout. - Close the cap and check again. Make sure the diesel cap was never opened. Only then start the car. Find during the second or third step that the bottle went in the diesel filler? That's where you stop. Step five stays off limits. ## AdBlue in the diesel tank already, around Sherford? Brief order, then. Top of that: 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 sucked from — so do not top up with diesel to thin it. If you are on a forecourt, whether it's the Esso or the Texaco, ask the attendants to help roll the car away from the pump. Your own drive in Sherford is where it stays. If the engine has already run, stop as soon as it is safe and switch off. Leave the M5 — under 3 miles out of Sherford — at the next junction. A short hop across Sherford is a smaller job than a run towards Wells, under 25 miles away, so tell us roughly how far it went. ## Sherford: what happens when we arrive Our engineers come to your car wherever it has stopped, whether that is outside Bishop Henderson Church of England Primary School, Taunton, near Comeytrowe Community Hall or on your own driveway. What fluid was put in, the quantity, and if it ran: our engineers ask since the answers set both work and quote. You get that price by phone, before anybody heads out. Your system is then purged thoroughly, once that tank is emptied. 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 with AdBlue than with petrol. Once the filter is cleaned — or replaced, if needed — clean diesel goes in, and then the car gets tested. Before we go, our engineers fire it up and confirm that it's running properly. Unstarted cars mostly mean a half-hour visit after the moment we arrive. The equipment is fine on a live forecourt, and hushed enough for a driveway after dark. Payment is on the day, not upfront, and you receive the documents an insurer wants: an engineer report and a VAT invoice. Misfuelling cover is part of many insurance policies — and so use the wait to check yours. ## About Sherford, briefly Sherford is a suburban area in Somerset, situated on the riverside at an elevation of 46 metres, with detached housing being the predominant type of accommodation. Sherford lies near several nearby places, including Haines Hill, Galmington, and Wilton, and is approximately 24.8 miles from the city of Wells. Sherford is also relatively far from London, at a distance of around 133.8 miles. Sherford has a population of around 4292 residents. ## AdBlue drains about Sherford, and Somerset beyond Galmington and Wilton are among the places near Sherford, a residential suburb, that the same teams cover, over TA postcodes. The van reaches you fastest with a postcode starting TA1 4. No need to move the vehicle. A drive, a lay-by on the way to Cotlake Hill, a side street close to St Michael the Archangel Church: our technicians drain it where it sits. Tricky to pin down, like the back of St Georges Church? By a border? Checking beats assuming, and so ring. ## For Sherford people, the short version Read the cap before you tip. Still AdBlue in the diesel tank? Petrol in Diesel will empty it where it is, wherever around Somerset: switch the vehicle off then phone 0333 366 0103.