--- title: Joyford: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/joyford-gloucestershire/ location: Joyford county: Gloucestershire latitude: 51.815330 longitude: -2.622200 service: AdBlue in a Diesel Tank updated: 2026-10-09 --- # Joyford: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? Keep the engine and ignition off then ring 0333 366 0103 now — reading can wait if AdBlue is already in the diesel tank. Caught before the engine runs, it's normally a drain and a thorough flush, done where your car is around Joyford. If you're reading before it has happened, the rest of this page is about why it takes place and how to make sure it doesn't. ## Why does AdBlue in a diesel vehicle need its own filler? Many modern diesels around Five Acres, like those in Joyford, carry on two liquids; your motor takes just the diesel. The exhaust, not your engine, is where AdBlue goes: sprayed into the gas to clean them, from its own tank. Each tank has its own filler. Under one flap, next to each other: that's the arrangement on many motors. On others, AdBlue's filler sits under the bonnet or in your boot instead. The diesel side is fuelled at the pump all the time. The AdBlue side is topped up far less regularly, usually from a bottle, and usually by someone who has to stop and think where it goes. The mistake grows in that gap between the two. ## How does AdBlue in the diesel tank take place in Joyford? 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, the vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Coopers Road before work, or in the car park at The New Inn on the way home. Then your car is new. A hire car, a new motor or a company car puts the fillers where your last one did not, and your hand reaches for the cap it would have 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 pour once it has started. It takes a few seconds, whether out in Shortstanding or bang in the heart of Joyford. ## Which filler is for AdBlue, and which for diesel? A couple of seconds is all these take — so check them before you tip anything, on a drive in Lower Berry Hill or a forecourt around Joyford. - Colour and lettering: an AdBlue cap is frequently blue, or says "AdBlue", where a diesel cap normally does not. Go by the cap, not its position. - Look at the size: the smaller neck is, on plenty of cars, the AdBlue one. - The flap. Look inside your fuel flap for a label. Many motors say there which fuel goes where. - Can't find it next to your diesel inlet? Then check beneath the bonnet or in your boot — the owner's manual says where. - Collecting a hire or company car, perhaps at the car park at Lydney? Ask the person who drove the car last before you set off, not once the light goes on. ## AdBlue top-ups that never reach the diesel tank A routine for the day the light comes on, wherever in Gloucestershire that is. - Park and switch off. Not on a slope, not with the motor running, and not in a rush on the side of Hillersland Lane. - Say "AdBlue" out loud as you unscrew the cap, after you find the AdBlue filler and read it. Daft, perhaps, but it works. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the car on. - Gently is best, through the bottle's own spout, till it's full or the bottle runs out. - Close the cap and check again. Make sure your diesel cap was never opened. Only then start your car. Find at step two or three that it's already gone into your diesel side? Then stop just there. Never go on to step five. ## AdBlue in the diesel tank already, around Joyford? Short order, then. Top of it: the engine remains unstarted. Leave the ignition off too, since on many diesels switching it on by itself runs the pump. Diluting it with more diesel won't work, since AdBlue sinks to the base rather than blending — and that is where the fuel is pulled from. The attendants at Texaco, Applegreen or another forecourt will usually lend a hand pushing the car clear when asked. On your own drive in Joyford? Then your car stays put. Where the motor has been run by now, pull over safely and switch the vehicle off. Joyford lies under 10 miles from the M50; there, use the first exit. Distance matters — a quick hop across Joyford is a smaller job than heading under 25 miles towards Gloucester — so tell us roughly how far it went. ## When our technicians get there in Joyford, what happens? Outside Berry Hill Primary School, near Christ Church or on your own driveway: wherever the vehicle has stopped, our engineers come to it. What fluid was put in, the quantity, and if it ran: our technicians ask because those answers set the work and quote. On the phone call itself, you are told our quote — ahead of anything else. The system is then purged thoroughly, after the tank is emptied. More than with petrol, it matters here: crystals build up, some metals are attacked, and nothing washes out unaided, no matter how long it is left. Once your filter is flushed — or renewed, if needed — fresh diesel goes in, and then your vehicle gets tested. Before leaving, our technicians start the car and check that it's running smoothly. Using pumps safe on a busy forecourt and quiet enough for use outside a house at night, most jobs in which the engine has not run need roughly half an hour once our engineers arrive. Payment is on the day, not upfront, and you receive the documents your insurer wants: an engineer report and a VAT invoice. Misfuelling cover is part of many insurance policies — and so make use of the wait to look at yours. ## About Joyford Joyford is a suburban area in Gloucestershire, situated inland at an elevation of 209 metres, with detached housing being the predominant type. Joyford lies near several nearby places, including Shortstanding, Christchurch, and Berry Hill, and is approximately 16 miles from Gloucester. Joyford is also relatively far from London, at a distance of around 109 miles. Joyford has a small population of around 1001 residents. ## AdBlue drains around Joyford, and Gloucestershire beyond As a residential suburb, Joyford has the same vans as surrounding places — Christchurch, Berry Hill — right across GL postcodes and the wider area beyond. A postcode starting GL16 7 gets our van to you fastest. The car doesn't need to move. We drain it where it is — a side street near Site of Chapel, a lay-by on the way to Forest Holidays Forest of Dean, a driveway. Ring and ask instead of assuming if you are near a border, or somewhere hard to describe, like the back of English Bicknor Village Hall. ## For Joyford drivers, the short version Read the cap before you pour. Still AdBlue in your diesel tank? Petrol in Diesel will drain it where it stands, wherever around Gloucestershire: switch it off then call 0333 366 0103.