--- title: AdBlue in a Diesel Tank Tutshill? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/tutshill-gloucestershire/ location: Tutshill county: Gloucestershire latitude: 51.648920 longitude: -2.667160 service: AdBlue in a Diesel Tank updated: 2026-10-01 --- # Tutshill: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? AdBlue already in the diesel tank? In that case set this page aside for now, leave the ignition and motor off, then ring 0333 366 0103. Normally, if the motor has not turned, it is emptied and thoroughly purged where your vehicle is around Tutshill. If you are reading before it has happened, the rest of this page is about why it happens and how to make sure it does not. ## Why does AdBlue in a diesel motor need its own filler? Plenty of modern diesels on the roads around Tutshill and Woodcroft carry two liquids, not one. Diesel goes to your engine. Kept in a tank of its own, AdBlue is fed into the exhaust gas and cleans it. Each tank has its own filler. Under one flap, side by side: that is the layout on a lot of motors. Elsewhere, AdBlue's filler is beneath the bonnet or in the boot instead. Filling the diesel side at the petrol pump happens constantly. The AdBlue side is filled far less frequently, normally from a bottle, and usually by someone who has to stop and think where it goes. It is in the gap that the mistake lives. ## How AdBlue in your diesel tank occurs in Tutshill Carelessness rarely explains it. What does is three things lining up together. The warning comes first. As AdBlue runs low the car tells you, and if it runs out completely, the car drops into limp mode. So the top-up is done in a hurry: on a drive off Gloucester Road before work, or in the car park at Live and Let Live on the way home. Then, your hand reaches for the cap it would have used on the old motor — because a hire car, a new motor or a company car puts the fillers somewhere your last one did not. 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. It takes a few seconds, whether out in Old Bishton or bang in the centre of Tutshill. ## Telling the AdBlue filler from the diesel filler Check these before pouring, on a forecourt around Tutshill or a drive over in Hardwick. Seconds, no more. - Blue and lettering: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually does not. Go by the cap, not its position. - Look at the size: the smaller neck is, on many motors, the AdBlue one. - Check inside the fuel flap: plenty of motors have a label there showing 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. - Check with 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 at Chepstow. ## AdBlue top-ups that never reach your diesel tank The day the light goes on, wherever in Gloucestershire, follow this routine. - Pull in somewhere level, engine off, with time in hand — never hurried on the side of Castleford Hill. - Daft as it sounds, saying "AdBlue" out loud as you unscrew the cap works — after you've located your filler and read the cap. - The two under a single flap? So make sure the lid on your diesel side stays shut before lifting the bottle. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Before you start the car, shut the cap and look a second time that your diesel cap was never came off. Find at the second or third stage that the bottle went in the diesel tank? That is where you stop. Never go on to step five. ## Already put AdBlue in your diesel tank around Tutshill? Brief list, then. First: your motor stays off. The fuel pump starts on plenty of diesels the moment the ignition is switched on — and so leave it off. Don't top up with diesel to dilute it: AdBlue does not mix with diesel, it sinks to the bottom of the tank, where your fuel is pulled from. If you're at a forecourt, whether it's the Tesco or the BP, ask the staff to help roll the car clear of the petrol pump. On your own drive in Tutshill? So your car stays where it is. Stop as soon as it is safe and switch off, if your engine has already run. Come off the M48 — under 3 miles out of Tutshill — at the next exit. Tell us about how far it went: a run towards Bristol, under 15 miles away, is a bigger job than a short hop across Tutshill. ## What occurs when we turn up in Tutshill Outside Tutshill Church of England Primary School, near The Drill Hall or on your own driveway: wherever your car has stopped, our engineers come to it. Both the work and our quote rest on three answers — what fluid, what amount, and whether it has run — so our technicians ask. That quote comes over the phone, before any van leaves. Draining the tank comes next, then a thorough flush of your system. More than with petrol, it matters with AdBlue: the crystals form, some metals are attacked, and none of that washes away on its own, however long it sits. Filter flushed or, if it must be, swapped; fresh diesel in; then a check of the vehicle. Before leaving, our technicians fire it up and make sure that it is running correctly. If your motor has not run, most jobs take about half an hour once we're there, using pumps that are fine on a working forecourt and quiet enough to use outside a house at night. Paying is on the day, not upfront, and you receive the paperwork your insurer asks for: an engineer report and a VAT invoice. Before we get there, take a look at your policy; plenty carry cover for misfuelling. ## About Tutshill itself Tutshill is a village in Gloucestershire, situated near the coast and close to the Welsh border. Tutshill sits at an elevation of 64 metres, overlooking the surrounding countryside and the nearby towns of Chepstow and Sedbury. Tutshill is characterized by its predominantly detached housing stock, reflecting its status as a residential community. Tutshill is located near the city of Bristol, which is approximately 13.8 miles away. ## Tutshill and Gloucestershire: AdBlue drains across the area Throughout NP postcodes, the teams covering Tutshill — a coastal village — work the nearby places too, Chepstow and Sedbury included. A postcode starting NP16 7 gets our van to you fastest. The vehicle remains put. Wherever it sits — beside Chepstow Museum, on a lay-by en route to Riverfront Park, on a drive — that is where it is emptied. Ring and ask instead of guessing if you're close to a border, or somewhere hard to describe, like the back of St Luke. ## In short, for Tutshill people Read the cap before you tip. Petrol in Diesel drains it on the spot, anywhere across Gloucestershire, if AdBlue has gone in your diesel tank all the same — and so leave the vehicle off then ring 0333 366 0103.