--- title: Explained: AdBlue in a Diesel Tank Davy Lamp canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/davy-lamp-durham/ location: Davy Lamp county: Durham latitude: 54.721110 longitude: -1.470090 service: AdBlue in a Diesel Tank updated: 2026-10-23 --- # Why It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Davy Lamp AdBlue already in the diesel tank? Then put this page aside for now, leave your ignition and motor off, and call 0333 366 0103. A drain plus a thorough flush, done right where your car sits in Davy Lamp, is usually what it takes if found before the engine runs. If you're reading before it has happened, the remainder of this page is about why it occurs and how to make sure it doesn't. ## Why does AdBlue in a diesel car need its own filler? Many modern diesels around Town Kelloe, as well as Davy Lamp, carry on two liquids; the motor gets just the diesel. The exhaust, not your motor, is where AdBlue goes: dosed into the gas to clean it, from its own tank. Different tanks, separate fillers. Under one flap, next to each other: that's the layout on a lot of vehicles. Elsewhere, AdBlue's filler sits beneath the bonnet or in your boot instead. Diesel gets filled at every filling station call-out, week in, week out. The AdBlue side is filled far less often, normally from a bottle, and normally by a person who has to stop and think where it goes. The mistake lives in that gap. ## How does AdBlue in your diesel tank take place around Davy Lamp? Rarely is it carelessness: normally three things line up. The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out completely, your vehicle goes into limp mode. So the top-up is done in a hurry: on a drive off Morley Crescent before work, or in the car park at The Davy Lamp on the way home. Then the vehicle is new. A hire car, a new vehicle or a company car puts the fillers where your last one didn't, and your hand hits for the cap it would have used on the old one. A spout-topped bottle meets no resistance at a diesel filler any more than at an AdBlue one. So the pour, once begun, carries on. The same few seconds decide it, in the middle of Davy Lamp or out in Church Kelloe. ## How to tell the AdBlue filler from the diesel one Whether a Davy Lamp forecourt or a driveway out in Garmondsway, spend a few seconds on these before anything goes in. - The cap. The AdBlue cap is often blue, or marked "AdBlue". The diesel cap usually isn't. Read it rather than going by where it sits. - Plenty of vehicles give AdBlue the smaller neck of the two. - A label inside the fuel flap often shows which fuel goes where, on many motors. Check for it. - The handbook says which it is when your filler isn't next to the diesel cap: the boot, or under the bonnet. - The person who drove the car last. On a hire or company car collected from somewhere like the car park outside Durham, ask before you leave, not when the light comes on. ## Keeping AdBlue out of your diesel tank when you top up A routine for the day the light comes on, wherever around Durham that is. - Park and switch off. Not on a slope, not with your motor running, and not in a rush on the side of Front Street. - Say "AdBlue" out loud as you unscrew the cap, once finding the AdBlue filler and reading it. Silly, perhaps, yet it works. - Leave the diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Finish once that tank fills or the bottle runs dry; until then, tip slowly through the built-in spout. - Only then, start your car: close the cap, check once more, and make sure your diesel cap was never opened. Discover during the second or third stage that AdBlue went into the wrong filler? That's where you stop. Stage five is off limits. ## Already put AdBlue in your diesel tank in Davy Lamp? Don't start the motor: that is how the short order of things starts. On many diesels your ignition alone runs the fuel pump, so do not switch the vehicle on. AdBlue doesn't mix with diesel — it sinks to the bottom of the tank, where the fuel is sucked from — so do not top up with diesel to dilute it. Ask the staff to help push the car away from the pump if you are on a forecourt — the Shell, the JET or somewhere else. At home in Davy Lamp? Then the vehicle stays put. When the motor has been run already, stop somewhere safe then switch the car off. The next junction means where to leave when you are on the A1(M), under 3 miles from Davy Lamp. A short hop across Davy Lamp is a smaller job than a run towards Durham, under 10 miles away, so tell us about how far it went. ## What occurs when we turn up in Davy Lamp The van comes to your car wherever it stopped — your own drive, beside Trimdon Grange Disaster Memorial, or by Kelloe Primary School. Those answers decide the work and the quote, and so we ask what was put in, roughly how much, and if it has run. You hear that price by phone, before anyone heads out. Then your tank is drained and the system purged thoroughly. 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 that matters more here than with petrol. The filter flushed or, if it must be, swapped; clean diesel in; then a test of the car. We don't go until it has been fired up and is running smoothly. If the motor has not run, most jobs take about half an hour once we're there, using pumps that are safe on a working forecourt and quiet enough to use outside a house at night. Paying is on the day, not upfront, and you receive the paperwork an insurer asks for: an engineer report and a VAT invoice. While we travel, have a look at your insurance documents; plenty carry cover for misfuelling. ## About Davy Lamp Davy Lamp is a suburban area situated on the riverside in County Durham, with a mix of semi-detached housing and a population of around 1175 residents. Davy Lamp sits near the city of Durham, approximately 6 miles away, and is close to nearby places such as Church Kelloe and Kelloe. Davy Lamp is located at an elevation of 123 metres, in a region of north-east England that is characterised by its industrial heritage and natural beauty. Davy Lamp is also relatively distant from London, at a distance of around 229 miles. ## AdBlue drains across Durham, Davy Lamp included As a residential suburb, Davy Lamp has the same vans as nearby places — Kelloe, Quarrington Hill — right through DH postcodes and the wider area beyond. A postcode starting DH6 4 gets the van to you fastest. The vehicle stays where it is. Draining happens on the spot, whether a driveway, a road near Saint Helens, or a layby on the way to Kingswood Nature Reserve. Assuming doesn't help at the back of Kelloe War Memorial, on a border, or somewhere awkward to pin down; ring and check. ## In short, for Davy Lamp drivers Tip nothing until you've read the cap. Petrol in Diesel drains it on the spot, anywhere around Durham, if AdBlue has gone in your diesel tank all the same — so leave the car off then phone 0333 366 0103.