--- title: Don't Start It: AdBlue in a Diesel Tank Ramsbury canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/ramsbury-wiltshire/ location: Ramsbury county: Wiltshire latitude: 51.442660 longitude: -1.607370 service: AdBlue in a Diesel Tank updated: 2026-10-04 --- # Ramsbury: AdBlue in the Diesel Tank? Leave It Off Engine off, ignition off: that's how you begin if AdBlue has got into the diesel tank. Urea dissolved in water is all AdBlue is. It does not burn, it doesn't mix with diesel, and the damage it does starts when the system draws it in. In Ramsbury, AdBlue in a diesel tank found before your motor runs normally comes down to a drain and a thorough flush, right where the car is. Ring 0333 366 0103 before you do anything else. ## Ramsbury, AdBlue in your diesel tank: what to do straight away Do these: - Take the keys out, and so no one switches your ignition on. - If you are at all near moving traffic, put the hazard lights on. - The empty bottle or the receipt tells us the product and the quantity, so do not bin it away. - The van finds you fastest with a postcode starting SN8 2, or simply the name of a street close by, and so call from the car. Don't do these: - Shifting your car just a few yards is no reason to start the motor. - Do not switch the ignition on. On plenty of diesels that alone runs the fuel pump. - Pouring in extra diesel doesn't work: AdBlue settles out rather than thinning. - Any driving at all is to be avoided, including a short distance along Love's Lane. - Draining your tank on your own by the road isn't one to try. The staff working at any Ramsbury filling station — the Smiths of Axford included — will usually help rolling it aside if you ask. Parked on your own drive? Then it stays just where it is. ## What AdBlue does in a diesel tank Not your motor but the exhaust is where AdBlue is meant to go. From a separate reservoir it goes directly to your exhaust, treating what the motor lets out. A fuel pump isn't designed to cope with it, and AdBlue was never supposed to travel through one. Inside a diesel tank it acts really differently from fuel. It does not mix in. The pickup sucks fuel from the deepest part of the tank, and that's just where AdBlue settles: as it is heavier than diesel, it sinks. Easiest of all: a vehicle that got AdBlue in Rudge overnight and hasn't turned since. The AdBlue waits at the base of the tank, untouched — but it would be first through once the motor runs, before any diesel at all. From there it causes two kinds of damage. Crystals and corrosion. As the water evaporates, it leaves urea that hardens in filters and narrow passages; and, because it attacks certain metals, each part it reaches keeps suffering for as long as it remains inside. By daybreak, a vehicle parked around Ramsbury with AdBlue through its pipework gets worse; where it's just in that tank, nothing changes. Diesel protects the high-pressure pump and each injector as it passes; water gives no lubrication, and that is a second kind of damage. ## Why is AdBlue in a diesel often the bigger problem? Top up a diesel with petrol by mistake over at the Shell, and the issue is thinned fuel. Mixed through the diesel and left unused, it is no threat at that stage; running your engine does the harm. With AdBlue in a diesel, the liquid as such is plainly the wrong one. It does not burn, and so it cannot just be run through. It does not stay mixed, and so it can't be thinned. And crystals and corrosion don't wash out with the next tank of fuel. That is why the flush matters more with AdBlue than with petrol, and why starting your engine "to see" costs more here than nearly anywhere else, whether the car is in Marridge Hill or the middle of Ramsbury. The good news is the same as with petrol. If the engine hasn't run, the AdBlue is still inside your tank, and your tank is the quickest part of a fuel system to clear, wherever across Wiltshire the car is sitting. ## AdBlue in a diesel tank around Ramsbury: how it ends up there Nobody means to do it. The AdBlue filler on plenty of motors waits right next to the diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. A container picked up while driving home and poured in outside the house, rather than at the forecourt, is the usual route. The ways it takes place are few and familiar. Hurrying, outside Ramsbury Primary School, after a warning lamp flashed on during the school run, someone refills the car. Close to Burdett Street, a driver pours a bottle in on the drive in the evening. Another pattern: dim light, a pub car park outside The Bell, and someone using that flap the first time. The least familiar cars get it most — rentals, brand-new ones, fleet ones, and the spare motor of a family with both fuels. Anywhere in Wiltshire, Ramsbury included, the slip does not change, and nor does the first response: leave it off. ## Started the motor with AdBlue in your diesel tank in Ramsbury? If so, the AdBlue is no longer inside that tank. Through the fuel filter, along the pipework, and — with any running time — on to the high-pressure pump and each injector: that's where it travels. Perhaps coming back from Ramsbury Meadow, or part way across Ramsbury, your engine might go rough, smoke, lose pace, flash your dash or stall. Stop as soon as it is safe, switch off, and don't restart the car to check. Each start pulls more of that through. On the M4, under 5 miles from Ramsbury, the first junction is where to leave, and somewhere safe is where to stop — not driving on. Mileage matters: each mile pushes the AdBlue further in, and so driving towards Oxford, under 50 miles away, makes a much larger job than crossing Ramsbury to the car park by Holy Cross. About how far it had come is worth telling us. We do all of the cleaning where the vehicle has ended up, and once the engine has run there is more of it. Spotted early, it very seldom leaves long-term damage. ## What does an AdBlue drain on a diesel involve in Ramsbury? Wherever it has stopped around Ramsbury — a forecourt, a lay-by, a driveway, a street beside Ramsbury War Memorial — the van travels to your vehicle. Before anything else our engineers ask what got in, roughly how much, and if your motor has run, because those replies decide this work. Next, emptying that tank right there takes out the contaminated diesel along with the AdBlue in one go. The fuel system is rinsed thoroughly, which matters more with AdBlue than with petrol, since what it leaves behind doesn't rinse out on its own. The filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. Most of these jobs are a half-hour visit once our engineers get there, provided your engine hasn't run. The pumping gear is explosion-proof, and so a busy forecourt is no issue, and it's quiet enough for a residential street late at night. The last step is to bleed the system on new diesel. You set off as soon as our engineers have started the car, and it makes no difference whether the vehicle is on a driveway in Ramsbury or in a bay at Bedwyn. It's tested on new diesel to make sure it runs correctly before our engineers go. The whole job is done where the car is, so it never needs to be taken to a garage. You receive a VAT invoice and an engineer report later on, which is what insurers ask for. ## About Ramsbury Ramsbury is a village situated in the Kennet Valley in Wiltshire, with the River Kennet running alongside. Ramsbury sits at an elevation of 118 metres, surrounded by rolling countryside and nearby villages such as New Town and Whittonditch. Ramsbury has a mix of old and new housing, with detached homes being the predominant type, and is located 26 miles from Oxford and 64 miles from London. ## AdBlue drains across Wiltshire, Ramsbury included Throughout the SN postcode area, the vans answering AdBlue call-outs around Ramsbury serve much of Wiltshire as well, New Town, Whittonditch and Preston included. Ring and ask rather than guess if you're close to a border, or somewhere awkward to explain. No moving is needed. In Ramsbury, a village, a mobile service fits: your car is drained on the spot, be it in a driveway, a side street, a car park or a filling station. ## Ramsbury: what AdBlue in a diesel tank costs to fix Because each jobs differ, a flat price would not be honest. What moves the price is, firstly, whether the engine has run and for how long; then how much AdBlue was put in; and then where the car is and whether our van can get to it safely, which is easier on an open drive than in a tight gap behind Ramsbury Memorial Hall. That's why each call from Ramsbury starts with the same three questions, asked before giving a figure, not after: what got in, how much, and whether it's run. Those answers turn a range into a straight price. The price is given on the call, before a van leaves; settling up comes on the day, by card or by phone, and nothing upfront. Plenty of insurance policies include misfuelling cover, and so it is worth checking yours whilst we are on the way. ## Beside the vehicle around Ramsbury, right now? Then, do nothing — that's the most helpful step available. Keys out; engine and ignition off. Phone 0333 366 0103 and tell us it's AdBlue, about how much, and whether it has run. Petrol in Diesel takes it from there, in Ramsbury or anywhere across Wiltshire.