--- title: Stonehouse: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/stonehouse-gloucestershire/ location: Stonehouse county: Gloucestershire latitude: 51.745920 longitude: -2.282440 service: AdBlue in a Diesel Tank updated: 2026-10-20 --- # Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Stonehouse Leave the motor and ignition off then phone 0333 366 0103 first — reading can wait when AdBlue is already in your diesel tank. A drain plus a full flush, carried out just where the vehicle stands around Stonehouse, is usually what it needs when caught before your motor runs. The remainder of this page covers why it takes place and how to make sure it doesn't — handy if you're reading before it has happened. ## Two fillers, two tanks: AdBlue in a diesel vehicle Not one liquid but two: that is what plenty of modern diesels around Stonehouse and Stanley Downton run, with diesel feeding your engine. AdBlue goes to the exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own. Every tank comes with a filler of its own. Under one flap, side by side: that is the layout on a lot of cars. On others, AdBlue's filler sits beneath the bonnet or in the boot instead. The diesel side is fuelled at the petrol pump all the time. Rarely topped up, AdBlue usually comes out of a bottle, tipped by a driver who must stop and think which filler it needs. It is in that gap that the mistake happens. ## AdBlue in your diesel tank around Stonehouse: how it happens Carelessness rarely explains it. What does is three things coming up together. Haste comes from the warning. The vehicle warns you as AdBlue runs low, and an empty tank puts the vehicle into limp mode — so the top-up gets done in a rush, before work on a drive off High Street, or heading home in the car park at The Woolpack Inn. New-to-you cars come next, as well. Hire cars, new cars and company cars put their fillers in new places, and habit reaches for the cap used on the old one. No part stops the tip once it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. Whether it takes place in Bridgend or the middle of Stonehouse, it is the same few seconds. ## The AdBlue filler and your diesel filler: telling them apart Be it a Stonehouse forecourt or a driveway over in Newtown, take a few seconds over these before anything goes in. - Position misleads; the cap doesn't. AdBlue ones are often blue or bear the word "AdBlue" — diesel ones normally do not. - Check the size: the smaller filler neck is, on plenty of cars, the AdBlue one. - Lift the filler flap and look for a label — many cars show which goes in each inlet right there. - Cannot find it beside the diesel inlet? In that case check below the bonnet or inside your boot — the owner's manual says where. - Picking up a hire or company car, perhaps at the car park at the nearest station? Check with the person who drove the vehicle last before leaving, not once the light comes on. ## AdBlue top-ups that never reach the diesel tank Wherever in Gloucestershire 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 Queens Road. - Locate the AdBlue filler, check the cap, and speak the word "AdBlue" out loud while unscrewing it. It sounds daft. It does the trick. - The diesel cap stays on. Where the two sit under a flap, confirm it is closed before the bottle comes up. - Slowly is best, through the bottle's own spout, till it is full or the bottle is empty. - Only after that, start the car: close the cap, check once more, and make sure the diesel cap was never opened. Spot at step two or three that it has already gone into the diesel side? So stop right there. Never go on to step five. ## Stonehouse: already put AdBlue in your diesel tank? Then the order of things is short. Don't start the motor. Leave the ignition off too, since on plenty of diesels switching it on by itself runs your pump. Diluting it with more diesel fails, since AdBlue settles to the bottom instead of mixing — and that is where your fuel is pulled from. If you are at a forecourt, whether it's the Texaco or the Shell, ask the staff to help push the vehicle clear of the pump. Your own driveway in Stonehouse is where it should stay. Stop as soon as it is safe and switch off, if the engine has already run. The next exit means the place to leave when you're on the M5, under 3 miles from Stonehouse. Roughly how far did it go? Hopping across Stonehouse is smaller work than a run of under 10 miles to Gloucester, and so say. ## Stonehouse: what takes place when our technicians turn up Anywhere the vehicle came to rest, be it outside Park Junior School, near Stonehouse Library or at home, our van comes to it. Both the work and the price rest on three replies — which liquid, which amount, and if it has run — so we ask. That price is given over the phone, ahead of any van leaving. Draining your tank comes next, then a thorough flush of your system. Unlike petrol, AdBlue leaves crystals and eats at some fuel-system metals, and neither washes away unaided. That is why it counts more. The fuel filter is cleaned, or replaced where it needs to be; fresh diesel goes in; and your car is tested. The engine is fired up next and checked to be sure it runs smoothly, all before we go. If the motor hasn't 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 after dark. Payment happens on the day, not upfront, and you are given the documents your insurer wants: an engineer's report and a VAT invoice. It's worth looking at your policy while we travel to you: misfuelling cover is included with plenty of policies. ## About Stonehouse itself Stonehouse is a town situated on the banks of the River Frome in Gloucestershire, with a population of around 8679 people. Stonehouse has a mix of housing types, but semi-detached homes are particularly prevalent, and its riverside setting at an elevation of 41 metres gives it a distinctive character. Stonehouse is located near several smaller communities, including Bridgend, Ryeford, and Oldend, and is close to the city of Gloucester, which is about 8 miles away. Stonehouse is also within commuting distance of larger cities, being around 94 miles from London. ## AdBlue drains around Stonehouse and across Gloucestershire Ryeford and Oldend are among the places around Stonehouse, a riverside town, that the same vans cover, over GL postcodes. A postcode starting GL10 2 gets the van to you fastest. Your car remains put. The drain happens right there, be it a driveway, a road near Town Hall, or a layby towards Rest Garden. Guessing won't help at the back of Bethel Church, on a border, or anywhere awkward to pin down; phone and ask. ## Stonehouse people: the short version Pour no AdBlue until you've read the cap. Even so AdBlue in the diesel tank? Petrol in Diesel will empty it wherever it is, wherever in Gloucestershire: keep it off and phone 0333 366 0103.