--- title: Explained: AdBlue in a Diesel Tank Townsend canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/townsend-somerset-ta19-0/ location: Townsend county: Somerset latitude: 50.926080 longitude: -2.898980 service: AdBlue in a Diesel Tank updated: 2026-10-10 --- # Why It Occurs and How to Avoid It: AdBlue in a Diesel Tank in Townsend AdBlue already in your diesel tank? Then put this page down for now, leave the ignition and engine off, and phone 0333 366 0103. A drain plus a thorough flush, carried out right where the vehicle sits in Townsend, is normally what it takes if found before the motor runs. If you're reading before it has happened, the remainder of this page is about why it takes place and how to make sure it doesn't. ## AdBlue in a diesel car, and its separate tank No single liquid but two: that is how plenty of newer diesels around Townsend and Kingstone run, with diesel for the engine. Kept in a tank of its own, AdBlue is sprayed into the exhaust stream and cleans it. Each tank comes with a filler of its own. Plenty of vehicles have a single flap for the two, whereas some move the AdBlue filler to the boot or under the bonnet. Filling your diesel side at the pump happens constantly. A driver who has to stop and work out where it goes normally tops up the AdBlue side, from a bottle, and far less frequently. Mistakes happen in that gap between them. ## How does AdBlue in the diesel tank take place around Townsend? Three things tend to line up, and carelessness is rarely one of them. On a driveway off Townsend before work, or in the car park outside The George heading home: that's where the hurried top-up happens. What is the reason for the rush? As AdBlue gets low the vehicle tells you, and once it is gone, limp mode follows. New-to-you motors are second, too. Hire cars, new cars and company motors place their fillers in new places, and habit goes for the cap it used on the old one. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip once it has started. The same few seconds decide it, in the middle of Townsend or out in Knott Oak. ## How to tell the AdBlue filler from the diesel one Be it a Townsend forecourt or a drive over in Moolham, take a few seconds on these before anything goes in. - The cap. The AdBlue cap is regularly blue, or marked "AdBlue". The diesel cap normally is not. Read it instead of going by where it sits. - Plenty of vehicles give AdBlue the smaller neck of the two. - The flap. Look inside your fuel flap for a label. Plenty of motors say there which fuel goes where. - Can't find it next to your diesel filler? In that case check beneath the bonnet or inside your boot — the owner's manual says which. - Collecting a hire or company car, say at the car park at Crewkerne? Ask the person who drove the car last before you set off, not when the light comes on. ## Topping up AdBlue without it reaching your diesel tank For the day the warning comes on — wherever it is around Somerset — 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 Love Lane. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the car on. - Gently does it, through the bottle's own spout, until it's full or the bottle runs out. - Before starting the vehicle, shut the cap and check a second time that your diesel cap was never opened off. Find during the second or third step that AdBlue went in the wrong tank? That's where you stop. Never go on to step five. ## Put AdBlue in your diesel tank in Townsend already? What follows is a short order of things, beginning with not starting your motor. On many diesels your ignition alone runs the fuel pump, so do not switch the vehicle on. AdBlue doesn't mix with diesel — it sinks to the bottom of your tank, where your fuel is drawn from — so do not top up with diesel to thin it. If you are on a forecourt, whether it's the Tesco or the Texaco, ask the staff to help push your car away from the pump. Leave it where it is if you are on your own driveway in Townsend. When your motor has been run already, pull over safely then turn it off. Leave the M5 — under 10 miles out of Townsend — at the next junction. A short hop across Townsend is a smaller job than a run towards Wells, under 25 miles away, and so tell us about how far it went. ## Our arrival around Townsend, and what occurs next Our van comes to the car wherever it stopped — your own driveway, near Ile Youth & Community Centre, or outside Herne View Church of England Primary. Both the work and our quote rest on three replies — which fluid, what amount, and if it's run — so our engineers ask. You hear that quote on the phone, before anybody sets off. Your system is then purged thoroughly, after 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 here than with petrol. Once the filter has been cleaned — or replaced, where needed — fresh diesel is added, and finally your vehicle gets tested. Before leaving, we fire it up and confirm that it's running correctly. Most jobs are done in roughly half an hour after we get there, provided your engine has not run — and the pumps we use are fine on a busy forecourt yet quiet at night beside a house. Paying is on the day, not upfront, and you are given the documents your insurer asks for: an engineer report and a VAT invoice. Many insurance policies include misfuelling cover, so it's worth checking yours while we're on the way. ## About Townsend Townsend is a small suburban area in Somerset, situated on the riverside at an elevation of 61 metres. Townsend lies near the towns of Ilminster and Wells, and is close to the villages of Knott Oak and Dillington. Townsend has a population of around 677 people, predominantly living in semi-detached housing. Townsend is located 126.5 miles west of London, in the South West region of England. ## Townsend and Somerset: AdBlue drains across the area Townsend is a residential suburb, and the teams that cover it also work the towns around it, Dillington and Ilminster among them, across the TA postcode area. A postcode starting TA19 0 gets the van to you fastest. The car stays where it is. Draining happens on the spot, be it a drive, a road by Ilminster Library, or a layby towards Dillington Park. Ring and ask instead of assuming if you're close to a boundary, or somewhere hard to describe, like the back of Ilminster Parish Hall. ## Townsend people: the short version Read the cap before you pour. If AdBlue has gone in your diesel tank all the same, leave it off then ring 0333 366 0103. Petrol in Diesel clears it where it waits, anywhere around Somerset.