--- title: Don't Start It: AdBlue in a Diesel Tank Feniton canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/feniton-devon/ location: Feniton county: Devon latitude: 50.787220 longitude: -3.282570 service: AdBlue in a Diesel Tank updated: 2026-10-11 --- # AdBlue in a Diesel Tank in Feniton? Don't Start It Motor off, ignition off: that's how you begin if AdBlue has got into the diesel tank. Chemically, AdBlue is simply urea in water. It does not burn, it doesn't mix with diesel, and the damage it does starts when the fuel system draws it in. In Feniton, AdBlue in a diesel tank caught before the motor runs normally means a drain and a thorough flush, right where the vehicle is. No step comes before calling 0333 366 0103. ## Those opening minutes: AdBlue in the diesel tank in Feniton Do: - Keys out — that way nobody can power anything on. - Near moving traffic? Then put the hazard lights on. - Keep the till receipt or the empty bottle, so you can tell us what went in and roughly how much. - Call right where you are. Quote a EX14 3 postcode or the closest street name, and nobody has to hunt for you. Not to do: - Do not start your engine, even for a moment to move the car. - Plenty of diesels power their fuel pump the moment your ignition comes on, so keep the car off. - Pouring in more diesel does not work: AdBlue settles out rather than blending. - Do not drive the car anywhere, not even a short stretch along York Crescent. - By the road, do not attempt emptying it on your own. Rolling your vehicle away from the island is a job for attendants to help with, wherever Feniton forecourt you are on, the Esso included. Parked on your own drive? Then it stays just where it is. ## What does AdBlue do in a diesel tank? Not your engine but the exhaust is where AdBlue belongs. Its own tank holds it, and from there it's sprayed into your exhaust, and there it treats the gas. Neither side suits the other: urea doesn't belong in an injection pump, and a pump can't take urea. Tipped in with your diesel, it stays apart rather than mixing — quite different from fuel. It's heavier than diesel, so it sinks and collects at the bottom of your tank, which is where the pickup pulls fuel from. A car topped up on a drive in Lower Cheriton yesterday evening and left unstarted is the simple one. No pump has pulled the AdBlue up so far — but once your engine turns, that is what goes first, straight from the bottom of that tank. From there it does two kinds of damage. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, and so it keeps working on the components it reaches for as long as it remains there. Overnight, a car parked in Feniton with AdBlue through its pipework gets worse; where it's only inside the tank, nothing changes. Water lubricates nothing. The injection pump and each injector need diesel running through them, and so the water part harms them in its own right. ## AdBlue in a diesel: why it's often worse than petrol Fill a diesel with petrol in error at the BP, and this issue is diluted fuel. No damage comes as long as it stays put, blended into your diesel — only once your motor works on it. The issue with AdBlue in a diesel is a totally unsuitable liquid. Not burning, it cannot simply be run through. Crystals and corrosion remain after the following tankful, and AdBlue separates back from the diesel, so thinning it can't help. That is why the flush matters more, and turning the key "to see" does more harm with AdBlue than almost any other mistake — in Fenny Bridges or the heart of Feniton equally. With AdBlue, the good news is no distinct from petrol. Anywhere around Devon your car has stopped, an unstarted motor leaves the AdBlue still in the reservoir: the simplest bit of a fuel system to empty. ## How does AdBlue end up in a diesel tank in Feniton? Many motors put the AdBlue filler beside the diesel cap, occasionally behind a single flap, and in dim light the two can appear identical. Nobody means it. Usually it's not the filling station: someone picks up a bottle heading home and tips it in at home. The ways it takes place are few and familiar. A warning light comes on during the school run, and the top-up occurs in a hurry outside Feniton Church of England Primary School. In the evening, a container goes in on a driveway near St Andrew's Close. Or someone unfamiliar with that flap refills the car after dark, parked in the car park outside The Nog Inn. It occurs most in the vehicles people know least: a hire car, a new vehicle, a company car, or the second car of a household with one diesel and one petrol. Same mistake, an identical first step — leave it off — anywhere you happen to be around Feniton or the rest of Devon. ## Feniton: started the engine with AdBlue in the diesel tank? If so, the AdBlue is no longer in that tank. Through your filter, through the pipework, and — with any running — into the injection pump and every injector: that is where it has gone. Perhaps returning from Queen Elizabeth 2nd park, or midway across Feniton, your engine might go lumpy, smoke, lose pace, light up your dash or stall. When you safely can, stop and switch it off — with no restarting to test. More of it is pulled through with each start. On the M5, under 10 miles from Feniton, the next junction is where to exit, and somewhere sensible is where to stop — not driving on. Distance matters: every mile pushes the AdBlue further in, and so heading for Exeter, under 15 miles away, gives a much larger job than crossing Feniton to the car park by Feniton Sports and Social Club. Let us know roughly how far it had come. Wherever your car came to a stop is where all of it gets done, even with more to rinse out after the engine has been started. Noticed early, it very seldom leaves lasting damage. ## Emptying AdBlue in a diesel in Feniton: what it takes The car remains where it is, whether that's a road beside Feniton Youth and Community Centre, a drive, a layby or a filling station in Feniton, and our van travels to it. Before anything else we ask what went in, about how much, and whether the motor has been run, because those answers decide the work. Then your tank is cleared where the vehicle stands, and so the tainted fuel and the AdBlue come out together. A careful flush matters much more after AdBlue than after petrol, because what remains will not wash out by itself. Fresh diesel goes in after the fuel filter is flushed — or replaced, when it needs to be — and after that your car is tested. If the motor hasn't run, the majority of jobs take about half an hour once we are there. The pumping gear is explosion-proof, so a busy filling station is no fault, and it is hushed enough for a residential street after dark. Last, your system is primed with fresh diesel. Whether it's a parking bay outside the nearest station or a driveway around Feniton, that is where our engineers fire it up and you head off. Our engineers confirm it runs properly on clean diesel before we go. No garage is required at any stage, with the whole job done then and there. Your insurer is likely to want an engineer's report and the VAT invoice — each handed over once the job is done. ## About Feniton and where it is Feniton is a village in east Devon, situated inland at an elevation of around 84 metres, approximately 11.8 miles from Exeter. Feniton lies near the villages of Talewater, Colestocks, and Higher Cheriton, and is characterized by its semi-detached housing stock. Feniton has a population of around 1725 residents, and is located about 145.5 miles west of London. ## Feniton and Devon: AdBlue drains across the area Our teams that answer AdBlue calls in Feniton also cover the places about it, Talewater, Colestocks and Higher Cheriton among them, and most of Devon beyond, across the EX postcode area. If you're near a border, or somewhere hard to explain, ring and ask instead of assuming. Anywhere the car stands — your drive at home, a residential street, a car park, a forecourt — our technicians drain it on the spot, and there's no need to bring it to us; that suits Feniton, a rural village, well. ## What does AdBlue in a diesel tank cost to sort out around Feniton? Since the jobs vary, a flat price would not be fair. Three things move the price: whether the engine has been running and for how long, how much AdBlue was put in, and where the vehicle is. That last one turns on whether a van can get to it safely, and an open driveway is simpler than a tight space behind Feniton Village Hall. What got in, what quantity, and if the engine ran: each Feniton call begins by asking precisely those, ahead of a figure, never afterwards. When they are known, a range becomes a single firm figure. Quoted on the call before the van sets out, the job is settled on the day — card or phone, no deposit. While our engineer is on the way, dig out your policy: plenty include misfuelling. ## Still beside your car around Feniton? Not touching the car is, then, the most useful move you can do. Keys out, engine off, ignition off. Call 0333 366 0103 and tell us it is AdBlue, about how much, and whether it has run. Petrol in Diesel takes it from there, around Feniton or anywhere in Devon.