--- title: Don't Start It: AdBlue in a Diesel Tank Wickwar canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/wickwar-gloucestershire/ location: Wickwar county: Gloucestershire latitude: 51.593730 longitude: -2.399450 service: AdBlue in a Diesel Tank updated: 2026-10-20 --- # AdBlue in the Diesel Tank in Wickwar? Keep It Switched Off AdBlue in the diesel tank? Then leave your engine off — and your ignition as well. AdBlue is urea mixed in water. As it is water-based, it will not ignite and won't blend with diesel; damage only starts once the pump begins drawing it. In Wickwar, AdBlue in a diesel tank found before the engine runs usually comes down to a drain and a thorough flush, just where the vehicle is. Before you do anything else, ring 0333 366 0103. ## Wickwar, AdBlue in the diesel tank: what to do right away Do: - So no one can turn the ignition on, pull the keys out. - Close to moving traffic? Then put the hazards on. - So you can tell us which liquid it was and about how much, keep the receipt or the empty bottle. - Call just where you are. Say a GL12 8 postcode or the nearest street name, and nobody has to hunt for you. Do not do these: - No starting your engine — not for a second, not to reposition the car. - Turning your key to ignition by itself starts your pump running on many diesels. Skip it. - Do not top up with diesel to thin it. AdBlue doesn't dilute in diesel; it separates out. - Even a short stretch along Buthay Lane is too far to drive the vehicle. - No emptying it yourself, either, on the roadside. Moving the vehicle off the island is a job for attendants to help with, whichever Wickwar forecourt you're on, the Gulf or any other. At your own driveway, do not move it at all. ## AdBlue in a diesel tank, and what it does there Not the motor but the exhaust is where AdBlue is meant to go. It goes into its own tank and is sprayed into the exhaust gas to fresh it. Nothing inside a fuel pump is designed for this fluid — and none of that was intended to travel that way. Inside a diesel tank it acts very differently from fuel. It doesn't mix in. Heavier than diesel, it sinks and pools below it — the very spot the pickup sucks from. Once your pump runs, the AdBlue is first to go through. Until then it waits beneath your diesel, and that is how a car filled in Talbots End last night and never started stays the straightforward case, provided nobody touches the key. After it is sucked in, the harm takes two forms. It attacks some metals used in fuel components, attacking whatever it reaches till it's removed completely. And when the water goes, the urea forms crystals that clog filters and lodge in tiny channels. Where the AdBlue is in the pipework, leaving it till morning around Wickwar leaves it worse. Inside your tank only, waiting costs nothing. Diesel lubricates the injection pump and each injector as it flows; water offers none of that, and that is a second kind of damage. ## Why AdBlue in a diesel is regularly more serious than petrol Put petrol in a diesel at the Shell and you have a problem of thin fuel. Damage just comes from driving on it. Mixed into your diesel and left in your tank, it causes nothing. AdBlue in a diesel is another matter: not thin fuel, but no fuel at all. Because it doesn't burn, running it through is not an option. Crystals and corrosion stay through the following fill, and AdBlue splits back from the diesel, and so watering it won't help. That is why the flush matters so much, and trying your engine "to see" does more harm here than almost any other slip — in Heath End or the heart of Wickwar alike. The good news is the same as with petrol. Wherever in Gloucestershire the car has come to rest, an unstarted motor means the AdBlue yet in the reservoir: the easiest part of a fuel system to empty. ## Wickwar: how AdBlue ends up in a diesel tank It's not on purpose. Plenty of vehicles keep the AdBlue inlet beside the diesel one, occasionally behind a single flap, and mixing them up is easy in poor light. Most of the time it takes place with a bottle bought on the way home and poured in on the driveway, not at the pump. A couple of familiar ways cover the majority of them. Midway through the drop-off, the dashboard flags it up, and outside Alexander Hosea Primary School the top-up is rushed. A bottle is poured in at the end of the day on a drive just off High Street. Otherwise, after dark by Fox and Maple, your car is refilled by a driver opening that flap the first time. It happens most in the cars people know least: a hire car, a new motor, a company car, or the second vehicle of a household with one diesel and one petrol. Anywhere around Gloucestershire, Wickwar included, the slip does not change, and nor does the first response: leave it switched off. ## AdBlue in the diesel tank in Wickwar, and your engine started? Then the tank is no longer where the AdBlue is. It has been pulled through the fuel filter and the fuel lines, and if the engine ran for any time, it has got to the high-pressure fuel pump and the fuel injectors. Maybe returning from Wickwar Playing Fields, or midway across Wickwar, the engine may go lumpy, smoke, lose power, light up your dash or stall. No restarting to check: pull over when safe, then turn it off. Each start pulls more of it through. If you were on the M5, under 5 miles from Wickwar, come off at the next junction and stop somewhere sensible instead of pressing on. A quick hop across Wickwar to the car park by Wickwar Congregational Church is one thing; driving for Bristol, under 15 miles away, is something else, since each mile pushes the AdBlue deeper in. So mileage matters. Roughly how far had it come? Tell us. There is more to rinse out once the motor has been run, and our engineers do all of it where the car has stopped. If it is noticed early, lasting damage is very uncommon. ## Wickwar: how AdBlue is drained from a diesel The vehicle stays where it is, whether that's a road beside Wickwar Social Club, a drive, a layby or a forecourt around Wickwar, and our van comes to it. The job depends on three answers, and we get before all else — which fluid was put in, the amount, and whether the motor has run. The polluted diesel and the urea leave as one after the tank is drained, right there. A full flush matters far more after AdBlue than with petrol, because what remains will not wash away by itself. Testing your vehicle follows at the end, once clean diesel goes in and the filter gets cleaned or, if necessary, swapped. If your motor has not run, the majority of jobs take about half an hour once our engineers arrive. The equipment is explosion-proof, so a busy forecourt is no fault, and it is hushed enough for a residential street late at night. Last, the fuel system is primed with new diesel. You drive off as soon as our technicians have fired it up, and it makes no difference whether the car is on a drive around Wickwar or in a bay at Yate. Before leaving, we make sure it's running smoothly with clean diesel in. No workshop is needed at any stage, with the whole job done on the spot. Your insurer will want an engineer's report and the VAT invoice — both yours afterwards. ## About Wickwar Wickwar is a village in Gloucestershire, situated on the riverside at an elevation of 84 metres, with detached housing being the predominant type of accommodation. Wickwar lies near the cities of Bristol and Bath, and is surrounded by nearby places such as West End, Chase Hill, and Churchend. Wickwar has a population of approximately 1372 residents, and is located about 13 miles from Bristol. Wickwar is also within commuting distance of major cities, being around 97.8 miles from London. ## AdBlue drains across Wickwar and Gloucestershire The vans that answer AdBlue jobs in Wickwar also cover the places around it, West End, Chase Hill and Churchend among them, and most of Gloucestershire beyond, across the GL postcode area. Near a border, or somewhere awkward to explain? Checking is better than assuming, so ring. Wickwar is a village, and a call-out drain suits it: whether the vehicle is on a home drive, a residential street, a car park or a forecourt, our technicians drain it where it is, and so it never needs to be shifted to us. ## Wickwar: what AdBlue in a diesel tank costs to fix No single figure could be honest, since each job differs. The price changes first with how long, if at all, the motor has been running, and next with the amount of AdBlue that got in. After that it turns on where the car is and whether our van can reach it safely, which is easier on an open drive than in a tight gap behind Wickwar Village Hall. Which fluid went in, how much, and if the engine ran: every Wickwar enquiry opens with exactly those, before any figure, not after. The answers turn a range into a straight price. You get that price on the phone, before anybody heads out, and you pay on the day, by card or over the phone, with nothing upfront. Misfuelling cover comes with plenty of insurance policies, so it is worth looking at yours before the van gets there. ## Wickwar: still next to the vehicle? Right now, the best thing to do with the vehicle is to not touch it. Ignition off, engine off, keys out. Tell us it's AdBlue, about what quantity, and whether it ran, on 0333 366 0103. From there Petrol in Diesel handles it, across Wickwar or wherever in Gloucestershire.