--- title: Fleetlands: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/fleetlands-hampshire/ location: Fleetlands county: Hampshire latitude: 50.834000 longitude: -1.172470 service: AdBlue in a Diesel Tank updated: 2026-10-17 --- # AdBlue in a Diesel Tank in Fleetlands: How It Happens and How to Stop It AdBlue already in your diesel tank? In that case set this page aside a moment, keep your ignition and motor off, and phone 0333 366 0103. A drain plus a thorough flush, carried out right where the car sits around Fleetlands, is usually all it needs when found before your engine runs. If you're reading before it has happened, the rest of this page is about why it occurs and how to make sure it doesn't. ## Two fillers, two tanks: AdBlue in a diesel car No single liquid but two: that's how plenty of newer diesels around Fleetlands and Peel Common run, with diesel for the motor. Its own tank keeps it, and from there it goes to your exhaust, and there a spray treats the fumes. There's a filler for each tank. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in your boot or under the bonnet. The diesel side is filled at the pump all the time. Much less often, the AdBlue side gets topped up — mostly from a bottle, by someone working out where it goes. The mistake grows in that gap between them. ## How does AdBlue in your diesel tank take place in Fleetlands? It's hardly ever carelessness. Three things tend to line up. On a drive off Lederle Lane before work, or in the car park at Hoeford Inn heading home: that is where the hurried top-up takes place. What is the reason for the rush? As AdBlue gets low your car warns you, and if it's gone, limp mode kicks in. Unfamiliar vehicles come second, too. Hire cars, new cars and company cars place their fillers in new places, and habit goes for the cap it used on the old one. A spout-topped bottle finds no resistance at a diesel filler no more than at an AdBlue one. So the pour, after started, keeps on. It takes seconds, be it in Woodcot or bang in the heart of Fleetlands. ## How to tell the AdBlue filler from the diesel one A few seconds is all these take — so check them before you tip anything, on a driveway in Fareham or a forecourt in Fleetlands. - Position misleads; the cap does not. AdBlue ones tend to be blue or carry the word "AdBlue" — diesel ones usually don't. - Check the size: the smaller neck is, on many cars, the AdBlue one. - The flap. Look inside the fuel flap for a label. Plenty of cars say there which fuel goes where. - The handbook. If the filler isn't by the diesel cap, it is in the boot or under the bonnet, and the handbook says which. - Picking up a hire or company car, say at the car park outside Fareham? Check with whoever drove the vehicle last before you set off, not when the light goes on. ## AdBlue top-ups that never reach the diesel tank A routine for the day the light comes on, wherever around Hampshire that is. - Park and switch off. Not on a slope, not with the engine running, and not in a rush on the side of Bridgemary Way. - Say "AdBlue" out loud as you unscrew the cap, after you find the AdBlue filler and read it. Silly, perhaps, but it does the trick. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — and leave the car on. - Gently is best, through the bottle's own spout, until it is full or the bottle runs out. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start your car. If at stage two or three you find you have already poured into your diesel side, stop there. Step five stays out. ## Put AdBlue in the diesel tank in Fleetlands already? The short order of things, beginning with no starting your motor. On plenty of diesels your ignition alone runs the fuel pump, so do not switch the vehicle on. Filling up with diesel will not weaken it: rather than mixing, AdBlue sinks to the base of the tank, right where the fuel is taken from. The attendants at Asda, Esso or any forecourt will usually help pushing the vehicle clear when you ask. On your own drive around Fleetlands? So the car stays where it is. Stop as soon as it is safe then switch off, if the motor has already run. Fleetlands sits under 3 miles from the M27; on it, take the first exit. Tell us roughly how far it went: a run towards Portsmouth, under 5 miles away, is a bigger job than a short hop across Fleetlands. ## What occurs when our technicians get there around Fleetlands By Woodcot Primary School, close to TeamSport Karting or on your own drive: wherever the car has stopped, we come to it. Our engineers ask what got in, roughly how much, and if it's run, since those answers decide the work and our price. On the call itself, you hear the quote — before anything else. Emptying your tank comes next, then a thorough flush of the system. With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own. The filter cleaned or, if needed, swapped; clean diesel in; and then a test of your vehicle. Then our engineers fire it up and make sure it runs properly before we go. If your motor has not run, the majority of jobs take about half an hour once we are there, using pumps that are safe on a working forecourt and quiet enough to use outside a house at night. The insurer will ask for an engineer's report and the VAT invoice, and both are yours at the end. Payment is on the day, with no deposit. Misfuelling cover is part of many insurance policies — so use the wait to check yours. ## About Fleetlands, briefly Fleetlands is a coastal suburban area in Hampshire, situated near the city of Portsmouth and close to the neighbouring communities of Woodcot, Bridgemary, and Bedenham. Fleetlands lies at a low elevation of around 9 metres, reflecting its proximity to the sea. Fleetlands has a population of approximately 3755 people, predominantly living in semi-detached housing. ## AdBlue drains across Hampshire, Fleetlands included Being a residential suburb, Fleetlands shares its vans nearby places — Bridgemary, Bedenham — right across PO postcodes and the surrounding area beyond. The van reaches you fastest with a postcode starting PO13 0. There's no need to move the vehicle. The drain happens on the spot, whether a driveway, a street near St Matthew's, or a layby on the way to Bridgemary Park. Ring and ask instead of guessing if you're close to a border, or somewhere hard to explain, like the back of Bridgemary Community Centre. ## For Fleetlands people, the short version Always, the cap; then, the tip. Petrol in Diesel empties it where it stands, anywhere around Hampshire, if AdBlue has gone in your diesel tank all the same — so leave the vehicle off then call 0333 366 0103.