--- title: West End: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/west-end-hampshire-po14-1/ location: West End county: Hampshire latitude: 50.843070 longitude: -1.199420 service: AdBlue in a Diesel Tank updated: 2026-10-09 --- # How It Happens and How to Prevent It: AdBlue in a Diesel Tank in West End If AdBlue is already in your diesel tank, stop reading for a moment: leave your motor and your ignition off then ring 0333 366 0103. Caught before your engine runs, it is usually a drain and a thorough flush, done where your car is in West End. If you are reading before it has happened, the remainder of this page is about why it occurs and how to make sure it doesn't. ## AdBlue in a diesel motor: two tanks, two fillers Many modern diesels around Fareham, like those in West End, carry on two liquids; the engine gets only the diesel. AdBlue's own tank keeps it, and from there it goes to the exhaust, where spraying cleans the fumes. Each tank has its own filler. Under one flap, next to each other: that's the layout on many cars. On others, AdBlue's filler is under the bonnet or in your boot instead. The diesel side is fuelled at the petrol pump all the time. Rarely topped up, AdBlue usually comes from a bottle, poured by someone who has to stop and think which filler to use. The slip lives in that gap. ## West End: how AdBlue in your diesel tank takes place 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 altogether, the vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off St. Anne's Grove before work, or in the car park outside Bird in Hand on the way home. Unfamiliar vehicles come second, too. Rentals, new motors and company cars place their fillers differently, and habit reaches for the cap it used on the old one. Lastly, the bottle goes in: a diesel filler or AdBlue one, it slides in just as easily, and once the pour begins, nothing halts it. The same few seconds settle it, in the middle of West End or out in Heathfield. ## Telling the AdBlue filler from your diesel filler Be it a West End forecourt or a driveway over in Hill Park, spend a couple of seconds on these before anything goes in. - The cap. The AdBlue cap is often blue, or marked "AdBlue". Your diesel cap usually is not. Read it instead of going by where it sits. - Many cars give AdBlue the smaller filler of the two. - A label inside your fuel flap often shows which fuel goes where, on many motors. Check for it. - In your boot or under the bonnet: that is where your filler is if it's not by the diesel cap, and the handbook tells you which. - Picking up a hire or company car, perhaps at the car park outside Fareham? Check with the person who drove the car last before leaving, rather than when the light goes on. ## Keeping AdBlue out of the diesel tank when you top up On the day the light appears — anywhere it is across Hampshire — a simple routine to follow. - Not in a rush on the side of Northfield Avenue, not on a slope, not with your motor running: park then switch off first. - Find the AdBlue filler, read the cap, and speak the name "AdBlue" out loud as unscrewing it. It sounds silly. It works. - Leave the diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle. - Tip slowly, using the bottle's own spout. Stop when it's full or when the bottle is empty. - Close the cap, and look again — making sure your diesel filler remained closed the whole time. After that, start the car. Stop there if you find, at step two or three, that you've already poured into your diesel side. Never go on to stage five. ## West End: already put AdBlue in the diesel tank? Don't start the engine: that's how the short order of things begins. On many diesels your ignition alone runs the fuel pump, so do not switch the vehicle on. Thinning it with extra diesel fails, since AdBlue settles to the bottom instead of blending — and that's where your fuel is pulled from. On a forecourt — Esso, Asda or any other — the attendants will usually help push the car clear, when you ask. If you are on your own drive in West End, leave it where it is. Stop as soon as it is safe and switch off, if your engine has already run. West End sits under 3 miles from the M27; on it, take the next junction. Tell us about how far it went: a run towards Portsmouth, under 10 miles away, is a bigger job than a short hop across West End. ## West End: what occurs when we get there Anywhere the car has stopped, whether outside Wallisdean Junior School, beside St John The Evangelist or on your own drive, our van comes to it. Our technicians ask what went in, roughly how much, and if it's run, since the replies settle this work and our price. You hear that price by phone, before anybody sets off. Draining your tank comes next, followed by a thorough flush of your system. Not like petrol, AdBlue leaves crystals and attacks certain fuel-system metals, and none of that clears away unaided. That is why it matters more. Testing comes last: before that, fresh diesel is added, and your filter is flushed or changed if necessary. Your engine is fired up next and checked to confirm it runs properly, all before our technicians leave. Using pumps fine on a working forecourt and quiet enough for use outside a house at night, most jobs where your engine has not run need roughly half an hour after we are there. No money upfront; you settle up on the day. At the end, a VAT invoice and a report from the engineer are handed to you for your insurer. It is worth checking your policy while we travel to you: misfuelling cover is included with many policies. ## About West End, for a moment West End is a suburban area in Hampshire, situated near the coast and approximately 5.7 miles from Portsmouth. West End has a relatively low elevation of 11 metres and is surrounded by nearby places such as Heathfield, Woodcot, and Catisfield. West End is characterized by its predominance of terraced housing, which is typical of many coastal towns in the South East region. West End is also within commuting distance to London, being around 65 miles away. ## AdBlue drains about West End, and Hampshire beyond Being a residential suburb, West End has the same vans as nearby areas — Woodcot, Catisfield — right through PO postcodes and the wider area around them. Quickest of all: quote a PO14 1 postcode for the van. There's no need to shift your car. We drain it where it is — a side street close to Brethren's Meeting Room, a lay-by on the way to Gillies Park, a drive. Ring and ask rather than guessing if you're close to a border, or somewhere hard to explain, like the back of Ranvilles Community Centre. ## The short version for West End drivers Before you pour, read the cap. Even so AdBlue in the diesel tank? Petrol in Diesel can drain it where it is, wherever in Hampshire: keep it off then ring 0333 366 0103.