--- title: AdBlue in a Diesel Tank Herne Hill: What Now canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/herne-hill-greater-london/ location: Herne Hill county: Greater London latitude: 51.451720 longitude: -0.096120 service: AdBlue in a Diesel Tank updated: 2026-10-28 --- # What Now? AdBlue in the Diesel Tank in Herne Hill One fact counts above all when AdBlue is in a diesel tank, and it is whether the engine has run since. Not started yet? Then keep the vehicle that way, whether your vehicle is — Herne Hill or Brixton. Ring 0333 366 0103 with your ignition and motor still off. Across Herne Hill, such a case is typically emptied and cleaned on the spot. Where your motor has been run, stop safely first, then switch the vehicle off. It's a larger job, though stage one does not change. Match what happened to a situation from the list below, wherever around Greater London you happen to be. ## On a Herne Hill forecourt with AdBlue in a diesel Picture it: standing by the pump, holding the nozzle, you spot the filler you opened was not the right one. It might be the Texaco, or the Esso, or a different station around Herne Hill. What it means: this is the ideal location to find out. Still inside your tank, and nothing pulled onwards: that is where the AdBlue sits. Freeing the pump is no reason to start it — and so don't get back in. Ask the attendants to help you push the vehicle into a parking space, keep the till receipt or the bottle, then ring us from the forecourt. The equipment is explosion-proof and safe on a busy forecourt, and so a car that cannot be pushed clear gets cleared where it is at the pump. ## AdBlue in the diesel tank at home around Herne Hill Several days had gone by with the warning light on. You bought a bottle, poured it in on the driveway, and only when you put the empty bottle in the recycling did you look a second time at the cap. Homes just off Burbage Road are hit as often as everywhere else. What it means: if you have not driven since, this is nearly as good as the forecourt. Diesel and AdBlue stay separate: the AdBlue settles to the floor of the tank and stays there, no matter how long it waits. Next: stop an early-morning drive by putting your keys in the house, then phone us. In Brockwell Park or here in Herne Hill, the drain happens on your drive. Even at night, our pumps are quiet enough for a driveway. ## Herne Hill: set off with AdBlue in a diesel? A short way beyond topping up, your motor began misbehaving: roughness, smoke, less power, lights on the dash. Maybe it was on Donne Court, perhaps on the way out towards Westminster, under 5 miles away. The point: your system has pulled AdBlue in by now. Past the fuel filter, along the pipework, and — the more the mileage — on into the high-pressure pump and each injector. Each mile and each restart takes it further. Next: find a safe spot, pull in, then turn your engine off. Service stations further along are too far: on the M4, under 10 miles out of Herne Hill, use the next junction. Do not restart the vehicle to see if it has cleared; it will not have. Roughly what distance did it go? Tell us as you call. ## AdBlue in the wrong tank: hire, lease and company vehicles You have had this car barely a week. Your own vehicle either has no AdBlue or keeps it somewhere different, and so nothing warned you the AdBlue inlet sits right next to the diesel. Wherever you happen to be across Greater London, any driver can slip up. Meaning? Whichever applies above counts here — run or unrun — plus one further stage. Plenty of hire and company contracts want the owner to approve work on your car. What to do: ring the hire firm or your fleet manager first, then us. That is quicker settled before we get there than after. If you are stuck in the car park outside the nearest station, or by Herne Hill Baptist Church, whilst you wait for an answer, leave the vehicle off. ## Unsure about AdBlue in the diesel tank in Herne Hill? At times the fair answer is "I think so". Which cap was taken off, you cannot say; meanwhile the bottle weighs less than expected, and ammonia hangs by the filler. A hurried stop by the gates of Judith Kerr Primary School, or a call to a friend in Tulse Hill: either fits. The point: the engine isn't hurt by some AdBlue splashed around the filler. The diesel tank with AdBlue inside is a different matter. You can't tell which by turning the key, and doing so would suck in any AdBlue that is in that tank. What to do: treat it as if it went in. Do not fire it up. Ring with the details: we'd rather confirm a clean tank than empty one after your motor has run. ## Herne Hill: what every AdBlue drain has in common Whichever situation you are in, the job starts the same way. Wherever your vehicle is — The Half Moon's car park, a street beside Herne Hill Velodrome, a driveway, a forecourt — the van gets there and asks about the liquid, the amount, plus whether your engine has been run. On the phone, ahead of anything else, you hear the quote, and those replies shape the job too. Then the tank is drained and the system rinsed thoroughly, which counts more with AdBlue than with petrol: AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not rinse out on its own. Finally come the fuel filter, flushed or renewed as needed; fresh diesel; and a check of the vehicle. Not started? In that case about half an hour on site is most jobs. Lastly, we fire it up. Our test that it runs correctly on clean diesel comes before we leave. The whole job is done where the car is, and if it is noticed soon, permanent damage is very uncommon. Nothing is paid upfront, settlement is made on the day, and you get what your insurer asks for: an engineer report and a VAT invoice. Many insurance policies include misfuelling cover, so it is worth checking yours whilst we are on the way. ## About Herne Hill itself Herne Hill is a suburban area in south London, situated approximately 4.1 miles from central London and 3.6 miles from Westminster. Herne Hill is characterised by its predominantly terraced housing and is located near several notable areas, including Brockwell Park and Dulwich Village. Herne Hill sits at an elevation of around 24 metres, and its population is approximately 9878 residents. Herne Hill is also close to Knights Hill, another nearby suburban area. ## AdBlue drains around Herne Hill and across Greater London As a residential suburb, Herne Hill has the same vans as the nearby towns — Dulwich Village, Knights Hill — all the way across SE postcodes. A postcode starting SE24 9 is the quickest way to tell us where you are. Whether the vehicle is on a lay-by on the way to Judith Kerr Primary School Greenspace or in a car park in the middle of Herne Hill, it doesn't need to move. Our technicians drain it where it is. Awkward to pin down? By The Edward Alleyn Club or a county line? Asking is better than assuming, so ring. ## Your situation, in one line Not run yet: keep the car off and call. Whichever line applies, Petrol in Diesel takes over from there on 0333 366 0103, across Greater London and in Herne Hill — once you stop, switch off and ring, if it's run.