--- title: AdBlue in a Diesel Tank Havering-atte-Bower: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/havering-atte-bower-greater-london/ location: Havering-atte-Bower county: Greater London latitude: 51.615980 longitude: 0.183480 service: AdBlue in a Diesel Tank updated: 2026-10-15 --- # Havering-atte-Bower: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? If AdBlue is already in your diesel tank, stop reading for a moment: leave your engine and your ignition off then ring 0333 366 0103. Caught before your motor runs, it's normally a drain and a thorough flush, done where the vehicle is around Havering-atte-Bower. The remainder of this page explains why it happens and how to make sure it doesn't — handy if you are reading before it has happened. ## AdBlue in a diesel motor, and its separate tank Diesel goes to the motor — but plenty of newer diesels driven round Havering-atte-Bower and Collier Row carry another liquid as well. AdBlue's own tank holds it, and from there it goes to your exhaust, where a spray treats the fumes. Every tank has one filler of its own. Under one flap, next to each other: that is the layout on a lot of cars. On others, AdBlue's filler is beneath the bonnet or in the boot instead. Diesel goes in on every forecourt visit, again and again. The AdBlue side is filled far less often, usually from a bottle, and normally by someone who has to stop and think where it goes. That gap is where the mistake lives. ## How AdBlue in your diesel tank takes place around Havering-atte-Bower Carelessness rarely explains it. Instead is three things lining up together. Hurry follows from the warning. The car warns you as AdBlue runs low, and a dry tank puts the vehicle into limp mode — so the top-up gets done in a rush, before work on a drive off North Road, or on the way home in the car park at The Orange Tree. Then the car is unfamiliar. A hire car, a new vehicle or a company car puts the fillers where your last one didn't, and your hand gets to for the cap it would have used on the old one. Lastly, the bottle fits: diesel filler or AdBlue one, it goes in as readily, and once the tip starts, nothing stops it. It takes seconds, be it out in Chase Cross or bang in the centre of Havering-atte-Bower. ## How to tell the AdBlue filler from the diesel one Check these before pouring, at a forecourt in Havering-atte-Bower or a driveway out in Navestock Common. Seconds, no more. - Position can mislead; the cap doesn't. AdBlue caps are often blue or bear the name "AdBlue" — diesel caps normally don't. - The size. On many cars the AdBlue filler neck is the smaller of the two. - The flap. Look inside your fuel flap for a label. Many cars say there which fuel goes where. - Cannot find it next to the diesel inlet? In that case look below the bonnet or in the boot — the owner's manual will say which. - The person who drove the car last. On a hire or company car picked up from somewhere like the car park at Gidea Park, ask before you leave, not when the light comes on. ## How to top up without AdBlue in your diesel tank Anywhere across Greater London the light comes on, here is a routine for that day. - Park and switch off. Not on a slope, not with your motor running, and not in a rush on the side of Orange Tree Hill. - Say "AdBlue" out loud as you unscrew the cap, after you find the AdBlue filler and read it. Daft, yes, but it does the trick. - The diesel cap stays on. Where the two sit under a flap, make sure it is shut before the bottle comes up. - Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty. - Before starting your car, close the cap and look again that the diesel cap never came off. If at step two or three you find you have already poured into your diesel side, stop there. Don't carry on to stage five. ## Already put AdBlue in your diesel tank around Havering-atte-Bower? Don't start your engine: that's how the short order of things begins. Keep your ignition off as well, because on many diesels it alone runs the fuel pump. AdBlue doesn't mix with diesel — it sinks to the bottom of the tank, where your fuel is drawn from — so don't top up with diesel to dilute it. Ask the staff to help push the car away from the pump if you are on a forecourt — the Shell, the Esso or somewhere else. Leave it where it is if you're on your own drive in Havering-atte-Bower. If the motor has already run, stop as soon as it is safe and switch off. On the M25, under 3 miles from Havering-atte-Bower, that means the next exit. Tell us about how far it went: a run towards London, under 15 miles away, is a bigger job than a short hop across Havering-atte-Bower. ## Our arrival around Havering-atte-Bower, and what occurs next The van reaches the vehicle wherever it has come to rest — your own driveway, beside St John the Evangelist, or outside Dame Tipping Church of England Primary School. We ask what was put in, about how much, and whether it's run, since those answers determine the work and our quote. You get that price on the phone, before anybody heads out. Next: a drain, then a thorough flush of the whole system. More than with petrol, it matters with AdBlue: crystals form, certain metals are attacked, and nothing clears away unaided, however long it is left. After the fuel filter is flushed — or replaced, if needed — clean diesel is added, and then the vehicle gets tested. Next our technicians fire it up and make sure it runs correctly before we leave. Most jobs are finished in about half an hour after our technicians arrive, as long as your engine has not run — and the pumps we use are fine on a live forecourt yet quiet at night outside a house. The insurer usually wants the engineer's report and the VAT invoice, and you get both once the job is done. Payment comes on the day, with no deposit. Many insurance policies include misfuelling cover, and so it is worth checking yours whilst we are on the way. ## About Havering-atte-Bower, briefly Havering-atte-Bower is a suburban area in Greater London, situated approximately 15 miles northeast of central London. Havering-atte-Bower sits at an elevation of around 106 metres, overlooking the surrounding countryside. Havering-atte-Bower is characterised by its predominantly detached housing stock and is located near other local areas such as Chase Cross and Rise Park. ## AdBlue drains across Greater London, Havering-atte-Bower included Nupers Hatch and Rise Park are among the places around Havering-atte-Bower, a residential suburb, that the same teams cover, throughout RM postcodes. Fastest of all: quote a RM4 1 postcode to the van. There's no need to shift the vehicle. Our engineers drain it where it is — a side street near Bower Hall, a lay-by on the way to The Green, a driveway. If you are close to a border, or somewhere hard to describe like the back of St James, ring and ask instead of guessing. ## For Havering-atte-Bower motorists, the short version Always, the cap; after that, the pour. Petrol in Diesel empties it on the spot, anywhere across Greater London, if AdBlue has gone in your diesel tank anyway — so leave the vehicle off then ring 0333 366 0103.