--- title: Don't Start It: AdBlue in a Diesel Tank Ferryhill canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/ferryhill-durham/ location: Ferryhill county: Durham latitude: 54.689050 longitude: -1.556870 service: AdBlue in a Diesel Tank updated: 2026-10-21 --- # AdBlue in the Diesel Tank in Ferryhill? Keep It Switched Off AdBlue in the diesel tank? Then leave the motor off — and your ignition too. In plain terms, AdBlue is just urea in water. The harm starts once it is sucked through the pump — it will not ignite, and it won't combine with diesel. In Ferryhill, AdBlue in a diesel tank found before your engine runs normally comes down to a drain and a thorough flush, just where the vehicle is. First, call us on 0333 366 0103. ## Ferryhill, AdBlue in your diesel tank: what to do straight away Do these: - Pull your keys out, so nobody switches the ignition on. - Put the hazard lights on if you are at all close to moving traffic. - Which fluid, and about how much amount? Hang on to the bottle or the receipt, and our engineers will know. - Tell us a postcode starting DL17 8, or whichever street is nearest, and our van finds you straight — so call wherever you stand. Never do these: - No starting your engine — not for a second, not to shift the vehicle. - Do not switch the ignition on. On plenty of diesels that alone runs the fuel pump. - AdBlue does not dilute in diesel — it separates out — so adding more diesel won't thin it. - Keep the vehicle where it is instead of driving it anywhere, even a short way down Market Street. - No draining it yourself, at all, on the roadside. Ask the attendants to help you roll the vehicle off the pumps if you're at a forecourt in Ferryhill, whether it is the BP or elsewhere. At your own drive, don't touch it at all. ## AdBlue in a diesel tank, and what it does there Not the motor but the exhaust is where AdBlue belongs. It goes into its own tank and is sprayed into your exhaust gas to clean it. Nothing in it is supposed to pass through a fuel pump, and nothing in a fuel pump is built to handle it. Fuel mixes; AdBlue, after tipped in, will not. The behaviour is nothing like diesel's. Heavier than diesel, it sinks and collects below it — the very place the pickup draws from. The first thing the fuel system pulls through, after it runs, is the AdBlue. So a car that had AdBlue poured in on a drive in Mount Pleasant last night, and hasn't been started since, is still the straightforward case: the AdBlue is lying at the bottom of that tank, and nothing has drawn it in. Once it's drawn in, the damage takes two forms. What remains once the water evaporates is urea, which forms crystals: they lodge in tiny passages and clog filters. Worse, it attacks certain metals in a fuel system, and carries on till it's cleared out. A vehicle left standing around Ferryhill with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank is not. Diesel protects the injection pump and every injector as it flows; water gives no lubrication, and that is a separate form of harm. ## Petrol or AdBlue in a diesel: why AdBlue is regularly worse Put petrol in a diesel at the JET and you have a problem of thin fuel. Harm only comes from running on it. Mixed into the diesel and left inside the tank, it causes nothing. With AdBlue in a diesel, the fluid as such is plainly the wrong one. Not burning, it can't simply be run through. Whether the vehicle is in Low Spennymoor or the heart of Ferryhill, firing it up "to see" does more harm with AdBlue than nearly any other error, and the flush counts more. Why: it won't remain mixed, and so diluting it fails; and crystals and corrosion outlast the next fill. The same good news holds as with petrol. Never started? Then the AdBlue waits just in your tank, the easiest section of the entire system to clear, wherever your vehicle has stopped across Durham. ## How does AdBlue end up in a diesel tank around Ferryhill? Nobody means to do it. The AdBlue filler on plenty of vehicles waits right next to your diesel filler, sometimes under the same flap, and the two caps can look alike in poor light. Mostly it happens with a bottle bought on the way home and poured in on the driveway, not at the pump. Usually, it happens in one of a few familiar ways. A warning light comes on during the school run, and the top-up occurs in a hurry outside Dean Bank Primary and Nursery School. A driver pours the container in at home, right off Main Street, as the day ends. Otherwise, after dark outside The Greyhound, the car gets topped up by someone opening that flap for the first time. The least familiar cars see it most — hire cars, brand-new ones, company ones, and the spare car in a family with one of each fuels. Leave it off: that's the first response to an identical mistake, wherever in Ferryhill or the rest of Durham you happen to be. ## AdBlue in the diesel tank around Ferryhill, and the engine started? Then your tank is no longer where the AdBlue is. It has been pulled through your filter and the lines, and if the engine ran for any time, it has got to the high-pressure pump and the injectors. Maybe coming back from King George V Recreational Ground, or part way across Ferryhill, the motor may run rough, smoke, drop power, flash your dash or stall. Stop as soon as it is safe, switch off, and do not restart the car to check. With each start, more of that is pulled through. If you were on the A1(M), under 3 miles from Ferryhill, come off at the next exit and stop somewhere safe rather than pressing on. Mileage matters: each mile carries the AdBlue deeper in, so driving for Durham, under 10 miles away, gives a much bigger job than hopping across Ferryhill to the car park by Ferryhill War Memorial. About how far it had come is worth telling us. Wherever the vehicle came to a halt is where all of it gets done, even with more to clean out after your engine has been started. Permanent damage is very rare if it is noticed quickly. ## Emptying AdBlue in a diesel around Ferryhill: what it takes Wherever it has stopped around Ferryhill — a forecourt, a layby, a drive, a road beside Ferryhill Library — the van travels to the vehicle. Three replies shape the work, so before anything else our engineers ask which fluid was put in, roughly the amount, and if your motor has run. Right there, the tank is then emptied, and both the polluted diesel and the urea leave as one. What remains from AdBlue won't flush away unaided, and so the fuel system gets a full flush, which matters much more with urea than with petrol. Next, the fuel filter: cleaned, or replaced when it has to be. Then fresh diesel, and then a check of the car. About half an hour on site is usual for most jobs when your motor hasn't run. The pumps are explosion-proof, fine on a working forecourt and quiet enough to use outside a house after dark. The last step is to prime the fuel system on fresh diesel. After that we fire it up and you drive off, whether from a parking space by Bishop Auckland or a drive around Ferryhill. It's checked on clean diesel to make sure it runs smoothly before we go. We do it all wherever the car has stopped, and it never needs to go to a workshop. Insurers want a VAT invoice and an engineer report, and both come at the end. ## About Ferryhill and where it is Ferryhill is a town in County Durham, situated inland at an elevation of 163 metres, approximately 6 miles from the city of Durham. Ferryhill has a population of around 8349 people and is characterised by predominantly terraced housing. Ferryhill is located near several smaller communities, including Dean Bank, East Howle, and Thinford, and is about 227 miles north of London. ## AdBlue drains across Durham, Ferryhill included AdBlue call-outs in Ferryhill go to teams that serve the places around it — Dean Bank, East Howle as well as Thinford — and much of Durham beyond, throughout DL postcodes. Near a boundary, or somewhere awkward to explain? Asking is better than guessing, and so ring. Wherever your vehicle sits — a driveway at home, a residential street, a parking area, a forecourt — we empty it on the spot, with no need to take it to us; which suits Ferryhill, a town, well. ## What AdBlue in a diesel tank costs to put right around Ferryhill There is no honest single price, because the jobs are not the same. Whether the motor has been running, and for how long, comes first in what changes the price. How much AdBlue got in comes next, and then the position of your car, since an open drive is easier for a technician to get to safely than a tight gap behind Saint Luke's. Which fluid was put in, what quantity, and if it ran: each Ferryhill call opens with precisely that, ahead of a figure, not afterwards. Given them, the range shrinks to a single fixed figure. The price is quoted on the call, before anyone sets off; payment happens on the day, by card or over the phone, with nothing upfront. Check your policy whilst we're on the way: many carry misfuelling cover. ## Ferryhill: still alongside the vehicle? Leaving the vehicle alone is, right now, the best move open to you. Keys out, motor off, ignition off. Say it was AdBlue, about what quantity, and whether the engine ran, on 0333 366 0103. After that Petrol in Diesel handles it, in Ferryhill or wherever in Durham.