--- title: AdBlue in a Diesel Tank Crofton Park? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/crofton-park-greater-london/ location: Crofton Park county: Greater London latitude: 51.452300 longitude: -0.033300 service: AdBlue in a Diesel Tank updated: 2026-10-25 --- # AdBlue in a Diesel Tank in Crofton Park: Why It Occurs and How to Stop It Leave your engine and ignition off then ring 0333 366 0103 now — the rest can wait if AdBlue is already in your diesel tank. Around Crofton Park, finding it before the engine turns normally leaves draining and a thorough flush where it stands. Here before the event? In that case the rest explains why it happens and what to prevent it happening at all. ## Two fillers, two tanks: AdBlue in a diesel motor No single liquid but two: that is what plenty of modern diesels near Crofton Park and Catford carry, with diesel for your engine. Kept in a tank of its own, AdBlue is fed into the exhaust gas and cleans it. Each tank has its own filler. Under one flap, next to each other: that's the layout on many motors. On others, AdBlue's filler is beneath the bonnet or in your boot instead. At the petrol pump, the diesel side gets filled all the time. Far less frequently, the AdBlue side is filled — mostly from a bottle, by a person working out where it goes. That gap is where the mistake lives. ## AdBlue in the diesel tank around Crofton Park: how it takes place It is hardly ever carelessness. Three things tend to line up. On a driveway off Glynde Street before work, or in the car park at LDN Beer Dispensary on the way home: that's where the rushed top-up happens. What is the reason for the rush? As AdBlue gets low the vehicle warns you, and if it's empty, limp mode follows. The old car's cap is where the hand goes — yet a rental car, a new motor or a company car keeps the fillers elsewhere. That's a second factor: an unfamiliar motor. A spout-topped bottle meets no obstacle at a diesel filler no more than at an AdBlue one. So the pour, once started, keeps on. Whether it occurs in Brockley or the middle of Crofton Park, it is the same few seconds. ## How to tell the AdBlue filler from the diesel one Look at these first, at a forecourt in Crofton Park or a driveway over in Honor Oak. A few seconds, that's all. - Check the cap instead of going by position: AdBlue ones are commonly blue or marked "AdBlue", and diesel caps usually aren't. - Check the size: the smaller neck is, on plenty of cars, the AdBlue one. - Open the flap and look for a label — many vehicles mark which goes in each filler right there. - Cannot see it next to your diesel inlet? Then look below the bonnet or inside your boot — the handbook will say where. - Picking up a hire or company car, perhaps at the car park at the nearest station? Check with whoever drove it last before leaving, not when the light goes on. ## Topping up AdBlue without it reaching your diesel tank A routine for the day the light comes on, wherever around Greater London that is. - Pull in on level, motor off, with time in hand — not rushing on the side of Sevenoaks Road. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - Leave the diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Stop once the tank fills or the bottle runs dry; before that, pour gently through its own spout. - Only after that, start your car: close the cap, check a second time, and make sure the diesel cap was never opened. Discover at the second or third stage that the bottle went into the wrong filler? That is where you stop. Stage five stays out. ## AdBlue in your diesel tank already, in Crofton Park? Then the order of things is short. Don't start your engine. Do not switch your ignition on; on many diesels that alone runs the fuel pump. Thinning it with extra diesel won't work, since AdBlue sinks to the bottom instead of blending — and that's where the fuel is drawn from. The attendants at Esso, Tesco or any forecourt will usually help to push your car clear if asked. If you're on your own driveway in Crofton Park, leave it where it stands. Already run? Stop once it is safe, then turn off. On the M11, under 10 miles from Crofton Park, that means the next exit. A short hop across Crofton Park is a smaller job than a run towards London, under 10 miles away, so tell us about how far it went. ## Crofton Park: what happens when our engineers arrive By Stillness Junior School, near King's College London Honor Oak Park Sports Ground or on your own drive: wherever your car has stopped, we come to it. Our engineers ask what was put in, roughly how much, and if it has run, because those replies decide this work and the quote. You get that price by phone, before anyone heads out. Then your tank is emptied and the fuel system purged thoroughly. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own. A test comes last: before that, fresh diesel goes in, and your filter is cleaned or replaced as needed. Before we go, our technicians fire it up and check that it is running properly. With pumps fine on a busy forecourt and quiet enough to use outside a house at night, most jobs in which the engine has not run take roughly half an hour after we arrive. Nothing in advance; you settle up on the day. Afterwards, a VAT invoice and a report from the engineer are handed to you for the insurer. It is worth checking your policy as the van travels to you: misfuelling cover comes with many policies. ## About Crofton Park Crofton Park is a suburban area in south east London, situated near the River Ravensbourne at an elevation of around 28 metres. Crofton Park lies close to the neighbouring areas of Brockley, Honor Oak Park, and Ladywell, and is approximately 5.6 miles from central London. Crofton Park is characterised by its predominantly terraced housing stock, which reflects the typical architectural style of many London suburbs. Crofton Park has a population of around 11,840 residents, according to recent estimates. ## Crofton Park and Greater London: AdBlue drains across the area Over SE postcodes, the teams covering Crofton Park — a residential suburb — work the nearby places too, Ladywell and Honor Oak Park included. A postcode starting SE4 1 gets our van to you fastest. The car does not need to shift. Draining takes place on the spot, be it a driveway, a street by Brockley Jack Theatre, or a lay-by towards Crofton Park Railway Garden. If you're close to a boundary, or somewhere hard to explain like the back of Crofton Park Library, ring and ask rather than assuming. ## In short, for Crofton Park drivers Always, the cap; then, the tip. Still AdBlue in the diesel tank? Petrol in Diesel will drain it wherever it is, wherever in Greater London: switch the car off then call 0333 366 0103.