--- title: AdBlue in a Diesel Tank The Burroughs — Don't Start It canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/the-burroughs-greater-london/ location: The Burroughs county: Greater London latitude: 51.583700 longitude: -0.225200 service: AdBlue in a Diesel Tank updated: 2026-10-07 --- # AdBlue in the Diesel Tank in The Burroughs? Keep It Switched Off With AdBlue in the diesel tank, the ignition remains off and so does the motor. Urea mixed in water is what AdBlue is. The trouble begins once it is pulled through your pump — it won't ignite, and it won't blend with diesel. If your engine hasn't run yet, AdBlue in a diesel tank is generally emptied and carefully rinsed where the car stands in The Burroughs. First, phone us on 0333 366 0103. ## Those opening minutes: AdBlue in the diesel tank in The Burroughs Do these: - So no one can switch the ignition on, pull your keys out. - Hazards on, if moving traffic is at all close. - Keep the till receipt or the empty bottle, and so you can tell us what went in and about how much. - Our van finds you quickest with a postcode starting NW4 2, or just the name of a street nearby, so phone from the spot. Don't: - Don't start the engine, even for a moment to move the vehicle. - Many diesels power their fuel pump the instant the ignition comes on, and so leave the vehicle off. - No more fuel on top. The AdBlue won't mix, and so it's wasted. - Keep the car where it is instead of driving it anywhere, even a short distance down Sydney Grove. - Draining that tank on your own beside the road is not one to try. Rolling the car away from the island is a job for attendants to help with, whichever The Burroughs forecourt you are on, the Esso or any other. On that drive, the car remains exactly as it is. ## What does AdBlue do in a diesel tank? AdBlue is made for the exhaust, not the motor. It goes into its own tank and is sprayed into the exhaust gas to fresh it. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is made to handle it. Fuel mixes; AdBlue, once poured in, won't. The behaviour is not at all like diesel's. It's heavier than diesel, and so it sinks and gathers at the bottom of your tank, which is where the pickup draws fuel from. A car filled on a drive in Staples Corner yesterday evening and left unstarted counts as the straightforward one. Nothing has sucked the AdBlue up yet — but when the motor turns, that is what goes first, straight from the bottom of your tank. Two kinds of harm come from there. What remains once the water goes is urea, which forms crystals: they lodge in tiny channels and block filters. Worse, it eats at certain metals in the fuel system, and keeps going until it's flushed out. By daybreak, a vehicle sitting around The Burroughs with AdBlue in its lines grows worse; if it's just inside that tank, nothing changes. Then there's the water: it brings no protection to the parts that need it the most — the high-pressure pump and every injector. ## Why is AdBlue in a diesel often the bigger issue? Top up a diesel with petrol by mistake over at the BP, and the issue is diluted fuel. No harm comes while it stays put, blended into the diesel — only once your motor works on it. With AdBlue in a diesel, the liquid itself is simply the wrong one. It doesn't burn, and so it cannot just be run through. Whether the vehicle sits in The Hyde or the heart of The Burroughs, turning it over "to see" does more harm with AdBlue than almost any other slip, and the flush counts more. The reasons: it will not stay blended, so watering it down fails; and crystals and corrosion survive the following fill. The good news is the same as with petrol. If the engine has not run, the AdBlue is still inside that tank, and that tank is the quickest part of a fuel system to clear, wherever around Greater London the vehicle is standing. ## How does AdBlue end up in a diesel tank around The Burroughs? It is not on purpose. Plenty of cars have the AdBlue inlet alongside the diesel inlet, occasionally under a single flap, and mixing them up is easy after dark. Mostly it's not the filling station: someone picks up a bottle heading home and pours it in at home. It tends to occur in a couple of familiar ways. The refill is hurried outside St Joseph's Catholic Primary School, after the dash flashed with a warning as the children were taken off. Near Queen's Road, a driver tips a container in on that drive after work. One more version: dim light, the car park by The Bodhran, and someone using that flap for the first time. It crops up most in a rental, a brand-new car, a fleet car, or the other vehicle in a home with both fuel types — the cars people use the least. Wherever you're in The Burroughs or the remainder of Greater London, it's the same slip and the same first answer: leave it off. ## Started your engine with AdBlue in your diesel tank in The Burroughs? Then the AdBlue has left the tank. Given any running, it travels to the injection pump and every injector, after passing through your filter and pipework. Perhaps returning from Holocaust Memorial Garden, or midway across The Burroughs, the engine may go lumpy, smoke, drop pace, light up the dash or stall. No starting it again to test: stop once it is safe, then switch it off. With each start, more of it is pulled through. The Burroughs sits under a mile from the M1; if you were on it, leave by the next junction and stop somewhere safe rather than driving on. A quick hop across The Burroughs to the car park by Holocaust Memorial Arch is one matter; heading for Westminster, under 10 miles away, is another, since every mile pushes the AdBlue deeper in. So distance matters. Let us know roughly how far it had come. There's more to flush once the motor has been started, and our engineers do all of it where your car has stopped. Lasting damage is very unusual if it's caught early. ## What draining AdBlue from a diesel involves in The Burroughs We come to the vehicle, wherever it has stopped in The Burroughs: a side street near Nuffield Health, a drive, a lay-by or a forecourt. Three replies decide the job, so before anything else our technicians ask what was put in, roughly the amount, plus whether your motor has turned over. Then the tank is drained where your car sits, so the contaminated fuel and the AdBlue come out together. The system is rinsed thoroughly, which matters more with AdBlue than with petrol, since what it leaves behind does not rinse out on its own. Your filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. Not run? In that case expect roughly half an hour once we are there for most jobs. The pumps are explosion-proof, safe on a busy forecourt and quiet enough to use outside a house at night. Clean diesel goes in to bleed the system, and that's the final step. Whether it's a parking bay at Hendon or a driveway around The Burroughs, that is where our engineers start the car and you drive off. The test before our engineers head off is that it runs properly on fresh diesel. The whole job is done where your car is, so it never has to be taken to a workshop. Insurers ask for a VAT invoice and an engineer report, and both come afterwards. ## About The Burroughs, for a moment The Burroughs is a suburban area in northwest London, situated approximately 6.7 miles from the city centre. The Burroughs has a relatively low elevation of 67 metres and is surrounded by nearby places such as Hendon, Brent Cross, and West Hendon. The Burroughs is predominantly composed of flat-type housing, which is typical of many London suburban areas. The Burroughs is close to major urban hubs, including Westminster, which is about 7.1 miles away. ## AdBlue drains around The Burroughs and across Greater London AdBlue call-outs in The Burroughs are passed to vans that serve the places around it — Hendon, Brent Cross plus West Hendon — and most of Greater London beyond, across NW postcodes. Assuming won't help by a border or anywhere hard to describe; phone and check. A mobile service suits The Burroughs, a residential suburb: you have no need to take your car to us, because our engineers drain it on the spot, on a drive, a residential street, a car park or a filling station. ## AdBlue in a diesel tank around The Burroughs: the cost of fixing it No single figure would be fair, since each job is different. Whether the motor has run, and for how long, comes first in what moves the cost. How much AdBlue was put in comes next, and then the position of your car, since an open driveway is simpler for a technician to get to safely than a tight space behind Hendon Synagogue. With that reason, each call from The Burroughs begins with the identical trio — what was put in, how much, whether it ran — ahead of any figure. The answers turn a range into a straight price. Before a van sets off, you are told the price by phone. And payment is on the day, card or over the phone, with nothing in advance. While the van is on the way, check your policy: many include misfuelling. ## In The Burroughs and still next to your car? Then the most handy thing you can do is nothing to the car. Ignition off, motor off, keys out. Ring 0333 366 0103: AdBlue, roughly how much, plus whether it ran is everything our engineers ask. Petrol in Diesel handles the remainder throughout Greater London, The Burroughs too.