--- title: AdBlue in a Diesel Tank Hither Green? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/hither-green-greater-london/ location: Hither Green county: Greater London latitude: 51.449070 longitude: -0.002410 service: AdBlue in a Diesel Tank updated: 2026-10-26 --- # Hither Green: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? Keep your engine and ignition off then phone 0333 366 0103 now — reading can wait if AdBlue is already in the diesel tank. A drain and a thorough flush, done right where the vehicle stands around Hither Green, is normally what it takes when caught before your engine runs. Here in advance? In that case what follows covers why it comes about and how to prevent it ever happening. ## Why does AdBlue in a diesel vehicle need its own filler? Many modern diesels on the roads around Hither Green and Ladywell carry two liquids, not one. Diesel goes to your motor. AdBlue goes to the exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own. Each tank has its own filler. Some vehicles keep the AdBlue filler in the boot or under the bonnet; a lot more have the two side by side under one flap. The diesel side is filled at the petrol pump all the time. Someone who has to stop and think where it goes usually fills the AdBlue side, from a bottle, and much less often. The error lives in that gap. ## How AdBlue in your diesel tank occurs around Hither Green Rarely is it carelessness: normally three things coincide. On a drive off Duncrievie Road before work, or in the car park at Station Hotel on the way home: that's where the rushed top-up happens. Why the rush? As AdBlue gets low the vehicle tells you, and once it's empty, limp mode follows. New-to-you cars are second, as well. Rentals, new vehicles and company cars place their fillers in new places, and habit reaches for the cap it used on the old one. No part stops the pour after it has started, because a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. Whether it occurs in Lee or the middle of Hither Green, it is the same few seconds. ## Telling the AdBlue filler from your diesel filler A few seconds is all the checks take — so run through them before you tip anything, on a driveway in Blackheath Park or a forecourt around Hither Green. - Blue and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually does not. Trust the cap, not where it sits. - On many cars, size tells: AdBlue gets the smaller filler neck. - The flap. Look inside the fuel flap for a label. Plenty of motors say there which fuel goes where. - The handbook. If the filler isn't by the diesel cap, it's in your boot or under the bonnet, and the handbook says which. - The previous driver knows. Ask as you pick up a rental or fleet car — at the nearest station's car park, perhaps — rather than when the light comes on. ## AdBlue top-ups that never reach the diesel tank The day the light goes on, anywhere around Greater London, use this routine. - Park and switch off. Not on a slope, not with your engine running, and not in a rush on the side of Hither Green Lane. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — and leave the vehicle on. - Stop once that tank fills or the bottle is empty; until then, pour gently through its own spout. - Only after that, start your car: close the cap, check a second time, and make sure your diesel cap was never opened. Stop there if you find, at step two or three, that you have already poured into the diesel side. Leave out stage five altogether. ## AdBlue in the diesel tank already, in Hither Green? Short order, then. First: the engine remains unstarted. On plenty of diesels the ignition alone runs the fuel pump, so don't switch the vehicle on. AdBlue doesn't mix with diesel — it sinks to the bottom of the tank, where your fuel is pulled from — so do not top up with diesel to dilute it. The attendants at Esso, BP or another forecourt will normally lend a hand to push your car away if asked. If you're on your own drive around Hither Green, leave the vehicle where it sits. Where the engine has been run already, stop somewhere safe then switch the vehicle off. The next exit means where to leave when you are on the M20, under 10 miles from Hither Green. About how far did it go? Crossing Hither Green is smaller work than a trip of under 10 miles towards London, and so say. ## What takes place when we arrive in Hither Green By Brindishe Green School, near Ted Ray Scout Hall or on your own drive: wherever your car has stopped, we come to it. Both the work and the price rest on three replies — what liquid, which quantity, and if it's run — so we ask. On the call itself, you are told the quote — before anything else. After that: a drain, then a thorough flush of the whole system. 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 does not wash out on its own. Filter flushed or, if it must be, replaced; fresh diesel in; then a test of the car. Next we fire it up and make sure it runs smoothly before leaving. If your motor has not run, the majority of jobs take about half an hour once we're there, using pumps that are fine on a working forecourt and quiet enough to use outside a house at night. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. It is worth looking at your insurance as the van travels to you: misfuelling cover is included with many policies. ## About Hither Green, for a moment Hither Green is a suburban area in southeast London, situated near the River Quaggy and close to the towns of Lee, Lewisham, and Catford. Hither Green has a mix of housing types, but is predominantly characterized by terraced homes. Hither Green is located at an elevation of 28 metres, about 6.7 miles from central London. Hither Green has a population of approximately 15,772 residents. ## AdBlue drains around Hither Green and across Greater London Over SE postcodes, our vans that cover Hither Green — a residential suburb — work the surrounding spots too, Catford and Lewisham among them. Quickest of all: quote a SE13 6 postcode to our van. The car does not need to move. The drain happens right there, whether a drive, a street near Longitude Zero - Meridian Line marker on Ceiling of Foot Tunnel, or a lay-by on the way to Hither Green Nature Triangle. If you're close to a boundary, or somewhere hard to explain like the back of Hither Green Baptist Church, ring and ask instead of guessing. ## The short version for Hither Green drivers Tip nothing until you've read the cap. Petrol in Diesel drains it where it stands, anywhere across Greater London, if AdBlue has gone in your diesel tank anyway — so leave the vehicle off then call 0333 366 0103.