--- title: Explained: AdBlue in a Diesel Tank Benhall canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/benhall-gloucestershire/ location: Benhall county: Gloucestershire latitude: 51.895650 longitude: -2.124220 service: AdBlue in a Diesel Tank updated: 2026-10-05 --- # AdBlue in a Diesel Tank in Benhall: How It Happens and How to Avoid It AdBlue already in the diesel tank? Then put this page aside for now, leave your ignition and engine off, and phone 0333 366 0103. A drain plus a full flush, carried out just where your vehicle stands in Benhall, is normally what it needs if caught before the engine runs. Here in advance? Then what follows covers how it happens and what to prevent it ever happening. ## Two fillers, two tanks: AdBlue in a diesel motor Many newer diesels on the roads about Benhall and Rowanfield carry two liquids, not one. Diesel goes to your engine. AdBlue's own tank holds it, and from there it is sent to the exhaust, and there a spray treats the gas. Different tanks, separate fillers. Other motors put the AdBlue filler in the boot or under the bonnet; a lot more place the two together behind one flap. Filling your diesel side at the petrol pump goes on constantly. Seldom filled, AdBlue usually goes in out of a bottle, tipped by someone who must stop and think what cap it needs. The mistake grows in the gap between the two. ## How AdBlue in the diesel tank occurs around Benhall Three things tend to come together, and carelessness is rarely one of them. On a driveway off Gloucester Road before work, or in the car park at The National Hunt on the way home: that is where the hurried top-up happens. What is the reason for the rush? As AdBlue gets low your car tells you, and once it's gone, limp mode follows. Next, the hand reaches for the cap it would have used on the old vehicle — because a hire car, a new car or a company car puts the fillers somewhere your last one didn't. A spouted bottle finds no resistance at a diesel filler any more than at an AdBlue one. And so the tip, after begun, carries on. Whether it occurs in Fiddlers Green or the middle of Benhall, it's the same few seconds. ## How to tell the AdBlue filler from the diesel one Before you pour anything, whether on a driveway in Hatherley or a forecourt in Benhall, check these. They take a few seconds. - Check the cap rather than going by position: AdBlue caps are regularly blue or marked "AdBlue", and diesel caps usually are not. - Many vehicles give AdBlue the smaller filler of the two. - A label inside the fuel flap frequently says which fuel goes where, on many motors. Look for it. - Can't find it next to the diesel inlet? In that case check beneath the bonnet or inside your boot — the owner's manual says where. - The person who drove the car last. On a hire or company car picked up from somewhere like the car park outside Cheltenham Spa, ask before you leave, not when the light comes on. ## How to top up without AdBlue in your diesel tank Wherever around Gloucestershire the light comes on, this is a routine for that day. - Pull in on level, engine off, with time in hand — never rushing on the side of Telstar Way. - Say "AdBlue" out loud as you unscrew the cap, after finding the AdBlue filler and reading it. Silly, perhaps, but it works. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — and leave the car on. - Stop when that tank fills or the bottle runs dry; before that, tip slowly using the built-in spout. - Shut the cap, and look again — confirm the diesel cap remained closed the whole time. Only then, start your car. Stop there if you find, at stage two or three, that you've already poured into the diesel side. Do not go on to stage five. ## Benhall: already put AdBlue in the diesel tank? Then the order of things is short. Don't start the engine. Leave your ignition off as well, because on plenty of diesels it by itself starts your pump. Topping up with diesel will not thin it: instead, AdBlue sinks to the base of the tank, just where fuel is taken from. At a forecourt — Asda, Esso or any other — the attendants will usually help roll your car away, if you ask. If you are on your own drive around Benhall, leave it where it is. If your engine has already run, stop as soon as it is safe and switch off. On the M5, under 3 miles from Benhall, that means the next junction. A short hop across Benhall is a smaller job than a run towards Gloucester, under 10 miles away, and so tell us about how far it went. ## Benhall: what occurs when we arrive Our technicians come to your car wherever it has stopped, whether that's outside St Mark's Church of England Junior School, close to Arle Court Manor House or on your own drive. The answers determine this work and our quote, and so our technicians ask what went in, roughly how much, and if it's run. You hear that quote on the phone, before anyone heads out. Then that tank is cleared and the fuel system flushed thoroughly. Much more than with petrol, it matters here: the crystals build up, certain metals corrode, and none of it clears away unaided, however long it is left. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. The engine is started next and checked to confirm it runs correctly, all before our technicians go. If your engine hasn't run, most jobs take about half an hour once we're there, using pumps that are safe on a busy forecourt and quiet enough to use outside a house after dark. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Before we get there, take a look at your insurance documents; plenty include cover for misfuelling. ## About Benhall and where it is Benhall is a suburban area in Gloucestershire, situated near the River Severn at an elevation of 44 metres. Benhall lies on the outskirts of Gloucester, approximately 5.7 miles from the city centre, and is surrounded by nearby places such as Fiddlers Green and St Marks. Benhall has a population of around 4609 people, predominantly living in semi-detached housing. Benhall is also relatively close to London, being about 89.6 miles away. ## Benhall and Gloucestershire: AdBlue drains across the area Over GL postcodes, the teams covering Benhall — a residential suburb — work the nearby locations too, The Reddings and St Marks included. The van reaches you fastest with a postcode starting GL51 0. No need to move your car. Wherever it stands — near The Pavilion, in a lay-by en route to Golden Valley Open Space, at home — that's where it is emptied. If you're close to a border, or somewhere hard to explain like the back of Ice House (earthwork), ring and ask instead of guessing. ## Benhall motorists: the short version Read the cap before you tip. Even so AdBlue in your diesel tank? Petrol in Diesel will empty it wherever it stands, anywhere around Gloucestershire: keep the vehicle off and ring 0333 366 0103.