--- title: AdBlue in a Diesel Tank Solihull: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/solihull-west-midlands/ location: Solihull county: West Midlands latitude: 52.412750 longitude: -1.777550 service: AdBlue in a Diesel Tank updated: 2026-10-09 --- # Preventing AdBlue in a Diesel Tank in Solihull: Why It Happens AdBlue already in the diesel tank? Then put this page aside a moment, keep your ignition and engine off, then phone 0333 366 0103. Around Solihull, catching it before the engine runs usually leaves draining and a full flush on the spot. The remainder of this page covers why it takes place and how to ensure it does not — handy if you're reading before it has happened. ## Why does AdBlue in a diesel car need its own filler? Diesel goes to your engine — but plenty of newer diesels driven around Solihull and Sharmans Cross carry a second fluid too. AdBlue's own tank keeps it, and from there it is sent to your exhaust, and there a spray treats the fumes. Separate tanks, separate fillers. Other cars put the AdBlue filler in your boot or under the bonnet; plenty of others place the two together under one flap. The diesel side is topped up at the petrol pump all the time. Seldom topped up, AdBlue normally goes in from a bottle, tipped by a driver who must stop and think what cap to use. That gap is where the slip lives. ## How does AdBlue in the diesel tank occur around Solihull? It is seldom carelessness. Three things tend to line up. To start with, the warning. Low AdBlue brings a message from the car, and running dry leads to limp mode — hence a hurried top-up, maybe before work off Mill Lane, or outside The Masons Arms on the way home that evening. New-to-you motors are second, too. Hire cars, new motors and company cars put their fillers differently, and the hand reaches for the cap used on the old one. Nothing halts the tip after it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. It's a few seconds, be it in Lode Heath or bang in the heart of Solihull. ## How to tell the AdBlue filler from the diesel one Before you pour anything, whether on a drive in Copt Heath or a forecourt in Solihull, check these. They take a couple of seconds. - Check the cap instead of going by position: AdBlue ones are frequently blue or marked "AdBlue", and diesel ones normally are not. - The size. On plenty of cars the AdBlue filler neck is the smaller of the two. - 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 inside your boot — the handbook will say which. - Whoever had it before will know. Ask as you collect a hire car or fleet car — from the nearest station's car park, perhaps — not once the light appears. ## Keeping AdBlue out of your diesel tank when you top up A routine for the day the light comes on, wherever across West Midlands that is. - Park and switch off. Not on a slope, not with the motor running, and not in a rush on the side of Drury Lane. - Locate the AdBlue filler, read the cap, and speak the word "AdBlue" out loud as unscrewing it. It sounds silly. It works. - The diesel cap stays on. When both share a flap, make sure it's shut before the bottle comes up. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Close the cap, then look again — confirm the diesel filler stayed shut throughout. Only then, start the vehicle. If at stage two or three you find you have already poured into your diesel side, stop there. Do not go on to step five. ## Put AdBlue in the diesel tank around Solihull already? The short order of things, beginning with no starting the motor. The fuel pump runs on plenty of diesels the moment your ignition goes on — and so leave it off. AdBlue doesn't mix with diesel — it sinks to the bottom of that tank, where the fuel is drawn from — so do not top up with diesel to dilute it. At a forecourt — Esso, Shell or any other — the staff will usually help push your car away, when you ask. Your own driveway around Solihull is the place it stays. If your motor has already run, stop as soon as it is safe then switch off. Solihull sits under 3 miles from the M42; there, take the next junction. A short hop across Solihull is a smaller job than a run towards Birmingham, under 10 miles away, so tell us roughly how far it went. ## What happens when our engineers turn up in Solihull Our technicians come to your car wherever it has stopped, whether that is outside St Alphege Church of England Infant and Nursery School, near Clarendon Fine Art or on your own driveway. Both the work and our price depend on three replies — which liquid, what quantity, and if it's run — so we ask. No one heads out until you've had the quote over the phone. Emptying your tank comes next, followed by a full flush of the fuel system. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own. After the filter is cleaned — or renewed, where needed — fresh diesel goes in, and finally your car gets tested. We don't go until it has been started and is running correctly. Most jobs are finished in roughly half an hour once our technicians get there, as long as the engine hasn't run — and the pumps our technicians use are safe on a live forecourt and quiet at night outside a house. Paying is on the day, not upfront, and you receive the documents your insurer wants: an engineer's report and a VAT invoice. It is worth looking at your insurance while we travel to you: misfuelling cover comes with many policies. ## About Solihull and where it is Solihull is a town in the West Midlands, situated on the banks of the River Blythe, with a mix of rural and urban landscapes. Solihull sits at an elevation of around 134 metres, approximately 7 miles southeast of Birmingham. Solihull has a range of residential areas, including Lode Heath, Blossomfield, and Elmdon Heath, with predominantly detached housing. Solihull is also within commuting distance of London, about 94 miles to the southeast. ## AdBlue drains across West Midlands, Solihull included Blossomfield and Elmdon Heath are among the places near Solihull, a riverside town, that the same vans cover, over B postcodes. Fastest of all: give a B91 3 postcode for the van. Moving your car isn't necessary. A drive, a lay-by on the way to Golden Jubilee Gardens, a side street near The Map Room: we drain the car where it is. Ring and ask instead of guessing if you're close to a boundary, or somewhere hard to explain, like the back of Touchwood Shopping Mall. ## Solihull motorists: the short version Read the cap before you pour. If AdBlue has gone in your diesel tank regardless, leave the car off then ring 0333 366 0103. Petrol in Diesel clears it where it waits, anywhere across West Midlands.