--- title: Lunsford: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/lunsford-kent/ location: Lunsford county: Kent latitude: 51.311380 longitude: 0.442070 service: AdBlue in a Diesel Tank updated: 2026-10-26 --- # AdBlue in a Diesel Tank in Lunsford: How It Happens and How to Avoid It AdBlue already in your diesel tank? Then put this page down for now, leave your ignition and engine off, then phone 0333 366 0103. In Lunsford, catching it before your engine runs usually means draining and a thorough flush where it stands. Nothing happened yet? Further down, the page covers the why it takes place and the how to prevent it for good. ## AdBlue in a diesel car, and its separate tank Plenty of newer diesels in Leybourne, as well as Lunsford, carry on two liquids; the engine takes only your diesel. AdBlue's own tank keeps it, and from there it goes to your exhaust, where spraying cleans the fumes. Each tank comes with a filler of its own. Other cars keep the AdBlue filler in your boot or under the bonnet; plenty of others have the two together under one flap. At the pump, your diesel side gets filled all the time. The AdBlue side is topped up far less often, normally from a bottle, and normally by a person who has to stop and think where it goes. Mistakes happen in that gap between them. ## AdBlue in your diesel tank around Lunsford: how it occurs Rarely is it carelessness: usually three things coincide. The warning comes first. As AdBlue runs low your car tells you, and if it runs out altogether, the car drops into limp mode. So the top-up is done in a hurry: on a driveway off Leybourne Way before work, or in the car park at Bricklayers Arms on the way home. New-to-you vehicles come next, as well. Hire cars, new motors and company motors place their fillers in new places, and the hand reaches for the cap it used on the old one. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the pour once it has started. New Hythe or the middle of Lunsford: it is the same few seconds either way. ## The AdBlue filler and the diesel filler: telling them apart Be it a Lunsford forecourt or a drive over in Millhall, spend a few seconds on these before anything goes in. - Where it sits misleads; the cap does not. AdBlue ones tend to be blue or bear the name "AdBlue" — diesel caps normally don't. - Look at the size: the smaller neck is, on many cars, the AdBlue one. - Check inside your fuel flap: many vehicles have a label there showing which fuel goes where. - Can't find it beside your diesel filler? Then check below the bonnet or inside your boot — the handbook says which. - Ask the person who drove it last — before you leave, not when the light comes on — when you collect a hire or company car from somewhere like the car park outside New Hythe. ## Keeping AdBlue out of the diesel tank when you top up When the light comes on, wherever in Kent, use this routine. - Not in a rush on the side of Brookfield Avenue, not on a slope, not with your engine running: park and switch off first. - Silly as it sounds, saying "AdBlue" out loud as you unscrew the cap does the trick — once you have located your filler and read it. - The diesel cap remains on. Where the two sit under a flap, make sure it is closed before the bottle comes up. - Gently does it, through the bottle's own spout, until it is full or the bottle is empty. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start the car. Stop there if you find, at stage two or three, that you have already poured into the diesel side. Stage five stays out. ## Put AdBlue in your diesel tank in Lunsford already? What follows is a short order of things, starting with no starting your engine. On plenty of diesels the ignition alone runs the fuel pump, so do not switch it on. Topping up with diesel will not thin it: rather than mixing, AdBlue sinks to the base of that tank, just where fuel is drawn from. The staff at Tesco, Shell or any forecourt will normally lend a hand to push the car clear when asked. Leave it where it is if you're on your own driveway around Lunsford. If the motor has already run, stop as soon as it is safe then switch off. Come off the M20 — under a mile out of Lunsford — at the first exit. A short hop across Lunsford is a smaller job than a run towards Southend-on-Sea, under 25 miles away, and so tell us about how far it went. ## What occurs when we get there in Lunsford Our van reaches your car wherever it has come to rest — your own driveway, near Grasshopper, or outside Brookfield Junior School. Both the work and our price rest on three replies — what liquid, which quantity, and if it's run — so our engineers ask. The price is given on the call, before any van leaves. Emptying the tank comes next, then a thorough flush of the fuel system. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it doesn't wash out on its own — which is why the flush counts more with AdBlue than with petrol. After the fuel filter has been flushed — or replaced, where needed — clean diesel goes in, and finally the vehicle is tested. After that our engineers start it and confirm it runs properly before we leave. Using pumps safe on a working forecourt and quiet enough for use outside a house at night, most jobs in which the engine has not run need about half an hour once we are there. Payment is on the day, not upfront, and you are given the documents an insurer wants: an engineer's report and a VAT invoice. While we travel, take a look at your policy; many carry cover for misfuelling. ## About Lunsford and where it is Lunsford is a village situated on the lakeside in Kent, with a low elevation of around 5 metres. Lunsford lies near several other communities, including New Hythe and Larkfield, and is within commuting distance of Southend-on-Sea. Lunsford has a population of approximately 2727 people, predominantly living in detached houses. Lunsford is also relatively close to London, at a distance of around 28 miles. ## AdBlue drains around Lunsford, and Kent beyond Lunsford is a village, and the vans that cover it also work the towns around it, Ham Hill and Larkfield among them, across the ME postcode area. A postcode starting ME20 6 gets our van to you fastest. No need to move the vehicle. The drain happens on the spot, be it a drive, a street by Larkfield Leisure Centre, or a lay-by on the way to Leybourne Lakes Country Park. If you are close to a border, or somewhere hard to explain like the back of Swan, ring and ask instead of guessing. ## For Lunsford people, the short version Before you tip, read the cap. AdBlue in your diesel tank after all? Leave the vehicle switched off and ring 0333 366 0103; Petrol in Diesel drains it on the spot, across Kent.