--- title: Little London: AdBlue in a Diesel Tank? Don't Start canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/little-london-gloucestershire/ location: Little London county: Gloucestershire latitude: 51.693810 longitude: -1.696640 service: AdBlue in a Diesel Tank updated: 2026-10-26 --- # AdBlue in a Diesel Tank in Little London? Don't Start It Engine off, ignition off: that's where you begin if AdBlue has got into the diesel tank. AdBlue is urea mixed in water. The harm begins once it's pulled through your pump — it will not ignite, and it won't combine with diesel. Caught before your motor has run, AdBlue in a diesel tank is normally a drain and a thorough flush, done where the vehicle is in Little London. Ring 0333 366 0103 before you do anything else. ## AdBlue in the diesel tank in Little London: the first few minutes Do these: - So no one can switch your ignition on, pull the keys out. - Close to moving traffic? Then put your hazards on. - So you can tell us which fluid it was and roughly how much, keep the till receipt or the empty bottle. - Call right where you are. Say a GL7 3 postcode or the nearest street name, and nobody has to search for you. Do not: - Shifting your vehicle just a short way is no reason to start your engine. - Turning the key to ignition by itself starts your pump running on plenty of diesels. Skip it. - AdBlue doesn't dilute in diesel — it separates out — so adding extra diesel won't weaken it. - Leave the vehicle where it is rather than driving it anywhere, even a short way down A417. - No emptying it yourself, at all, on the roadside. On a forecourt around Little London, whether it's the Texaco or another one, ask the attendants to help you roll the car clear of the petrol pump. Stopped on your own drive? Then it stays exactly as it is. ## AdBlue in a diesel tank, and what it does there Meant for your exhaust, AdBlue has no business in the motor. It goes into its own tank and is sprayed into the exhaust gas to fresh it. Neither side fits the other: urea does not belong in a pump, and a pump cannot deal with urea. Poured in with the diesel, it stays separate instead of mixing — quite different from fuel. It is heavier than diesel, so it sinks and gathers at the bottom of your tank, which is where the pickup pulls fuel from. Once your system runs, the AdBlue is top of the list to go through. Until then it waits beneath the diesel, and that is how a vehicle filled in Little Faringdon last night and not started stays the simple case, as long as no one touches the key. It causes two kinds of damage from there. It attacks some metals found in fuel systems, working on any part it reaches till it is cleared from your system. And once the water goes, the urea turns into crystals that clog filters and lodge in narrow channels. A motor left sitting around Little London with AdBlue already in its lines is worse by the morning; one with AdBlue only in its tank is not. Water protects nothing. The high-pressure pump and every injector need diesel flowing through them, and so the water content harms them by itself. ## Petrol or AdBlue in a diesel: why AdBlue is frequently worse Fill a diesel with petrol in error over at the Shell, and the problem is thinned fuel. Damage just comes from running on it. Mixed into the diesel and left inside your tank, it does nothing. AdBlue in a diesel is a different matter: not thin fuel, but no fuel at all. It doesn't burn, so it cannot just be run through. Nor can it be thinned, since it splits back out — and the next fill will not rinse away crystals or corrosion. So the flush counts more here, and trying the engine "to see", in the heart of Little London or out in Buscot, costs more than nearly any other error. As with petrol, there is good news. Not run? Then the AdBlue waits only in the tank, the simplest bit of the whole system to clear, anywhere the car has come to rest around Gloucestershire. ## How does AdBlue end up in a diesel tank in Little London? It's not on purpose. Plenty of vehicles keep the AdBlue inlet alongside the diesel inlet, now and then behind one flap, and muddling them up is simple after dark. A container picked up while driving home and tipped in outside the house, instead of at the filling station, is the usual route. Mostly, it happens in one of a few familiar ways. Rushing, outside St Lawrence Church of England Primary School, after a warning lamp flashed on during the school run, a parent tops up the car. Close to East Allcourt, a driver pours a bottle in at home in the evening. Else, in dim light outside The Riverside, the car is topped up by someone using that flap for the first time. It comes up most in a hire car, a brand-new motor, a company car, or the spare motor of a family with one of each fuels — the cars people know least. Wherever you are in Little London or the remainder of Gloucestershire, it is the same error and the same first answer: leave the car off. ## Already started the motor with AdBlue in your diesel tank around Little London? The AdBlue has left your tank, then. Via the fuel filter, along the lines, and — with any running time — into the injection pump and each injector: that's where it has gone. You may notice your engine running unevenly, smoking, losing power, showing warning lights or cutting out, maybe on the way back from Riverside Park or halfway across Little London. No restarting to test: pull over when safe, then turn everything off. With each start, more of that is pulled through. If you were on the M4, under 15 miles from Little London, come off at the next exit and stop somewhere safe instead of pressing on. Hopping across Little London to the car park by Lechlade Baptist Church is one matter; heading towards Oxford, under 25 miles away, is another, because each mile carries the AdBlue further in. So distance counts. Let us know roughly how far it had come. We do all of the rinsing where the vehicle has ended up, and once your engine has run there is more of it. Very seldom does it leave permanent damage when it is noticed quickly. ## Emptying AdBlue in a diesel around Little London: what it takes The vehicle stays put, whether that is a street beside Lechlade Community Library & Visitor Information Centre, a drive, a lay-by or a forecourt around Little London, and the van travels to it. Three answers shape the work, and so before anything else our engineers ask what got in, about what quantity, plus if the motor has turned over. Then that tank is cleared where your car waits, and so the tainted fuel and the AdBlue come out together. With AdBlue, far more than with petrol, the flush matters: the whole system is flushed all the way through since what remains won't wash out by itself. The filter is flushed, or replaced where it needs to be; fresh diesel goes in; and the car is tested. Engine not run? Then count on roughly half an hour on site for most jobs. Quiet enough to use outside a house at night, and fine on a working forecourt, the pumps are explosion-proof. Bleeding the fuel system with clean diesel comes last. Firing it up comes next, and then you drive off from where the car is parked, outside Swindon or on a drive around Little London. Our technicians check it runs smoothly on fresh diesel before we leave. No garage is required at any point, with the entire job done then and there. Insurers want a VAT invoice and an engineer report, and you get both at the end. ## About Little London and where it is Little London is a suburban area in Gloucestershire, situated on the riverside at an elevation of 79 metres, with detached housing being the predominant type of accommodation. Little London lies near the towns of Lechlade-on-Thames and Inglesham, and is close to the village of Buscot Wick. Little London is located 19.2 miles from Oxford and 68.5 miles from London, making it a relatively accessible location. Little London has a population of approximately 1661 residents. ## AdBlue drains around Little London and across Gloucestershire Lechlade-on-Thames, Inglesham and Buscot Wick are among the towns around Little London that the same teams serve, along with much of Gloucestershire further out, over the GL postcode area. Ring and check instead of guessing when you're by a border, or somewhere tricky to pin down. A mobile service suits Little London, a residential suburb: you have no need to take your vehicle to us, since our engineers empty it on the spot, on a drive, a residential street, a parking area or a filling station. ## AdBlue in a diesel tank in Little London: the cost of fixing it Each job is different, so no single quote would be fair. The cost changes first with how long, if at all, the motor has been running, and next with the amount of AdBlue that was put in. After that it turns on where your car is and whether our van can reach it safely, which is easier on an open driveway than in a tight space behind St Lawrence. Ahead of a quote, never afterwards, every enquiry from Little London begins with three questions: the liquid, the amount, and whether it ran. Their answers shrink the range right down to a single figure. Quoted on the call before the van sets out, it is paid for on the day — card or phone, nothing in advance. Plenty of insurance policies include misfuelling cover, so it is worth checking yours whilst we're on the way. ## Little London: still next to your car? Then, the most helpful thing to do with your vehicle is to not touch it. Ignition off, motor off, keys out. Petrol in Diesel handles the remainder, in Little London or wherever in Gloucestershire, after you phone 0333 366 0103 to say it's AdBlue, roughly what quantity, and if it ran.