--- title: AdBlue in a Diesel Tank Tanfield Lea? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/tanfield-lea-durham/ location: Tanfield Lea county: Durham latitude: 54.881670 longitude: -1.712810 service: AdBlue in a Diesel Tank updated: 2026-10-05 --- # How It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Tanfield Lea If AdBlue is already in your diesel tank, stop reading for a moment: leave the engine and your ignition off then ring 0333 366 0103. Usually, if the motor hasn't turned, it's emptied and thoroughly purged where your vehicle sits in Tanfield Lea. Here in advance? In that case the rest explains why it happens and what to stop it ever happening. ## AdBlue in a diesel motor: two tanks, two fillers Many modern diesels around White-le-Head, as well as Tanfield Lea, carry on two liquids; your motor gets only your diesel. AdBlue's own tank keeps it, and from there it is sent to the exhaust, where a spray treats the gas. Each tank has a filler of its own. Many of motors share a single flap for both, while others put the AdBlue filler to the boot or under the bonnet. Topping up the diesel side at the petrol pump happens all the time. A driver who has to stop and think where it goes usually tops up the AdBlue side, from a bottle, and much less regularly. That gap is where the mistake lives. ## Tanfield Lea: how AdBlue in the diesel tank takes place It's seldom carelessness. Three things tend to line up. First, the warning. Low AdBlue triggers a message from your car, and running out leads to limp mode — so a hurried top-up, perhaps before work off Leith Gardens, perhaps at Oak Tree Inn on the way home that evening. Then, your hand goes for the cap it knew on the old car — because a rental car, a new vehicle or a company car puts the fillers somewhere your last one did not. Nothing stops the tip after it has started, because a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. It's seconds, be it in Tantobie or bang in the centre of Tanfield Lea. ## Which filler is for AdBlue, and which for diesel? Before you tip anything, whether on a driveway in Clough Dene or a forecourt in Tanfield Lea, check these. They take a few seconds. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". The diesel cap usually is not. Read it rather than going by where it sits. - On many motors, size gives it away: AdBlue has the smaller filler neck. - The flap. Look inside the fuel flap for a label. Plenty of vehicles say there which fuel goes where. - Can't find it next to your diesel filler? Then look below the bonnet or inside your boot — the owner's manual will say which. - Whoever had it before will know. Check when you pick up a hire car or company car — from Dunston's car park, say — rather than when the warning comes on. ## Topping up AdBlue without it reaching your diesel tank A routine for the day the light comes on, wherever around Durham that is. - Turn off after you park — flat ground, motor off, and not rushed by Parkside at the roadside. - Say "AdBlue" out loud as you unscrew the cap, once finding the AdBlue filler and reading it. Daft, perhaps, yet it does the trick. - The two under one flap? Then make sure the cap on the diesel side stays shut ahead of raising the bottle. - Stop once the tank is topped up or the bottle runs dry; until then, tip gently through its built-in spout. - Shut the cap, and check once more — confirm your diesel filler remained shut throughout. Only then, start your car. Discover during the second or third stage that the bottle went into the wrong tank? That is where you stop. Don't carry on to step five. ## Already put AdBlue in your diesel tank in Tanfield Lea? Don't start the engine: that is where the short order of things begins. Do not switch your ignition on; on plenty of diesels that alone runs the fuel pump. Topping up with diesel will not thin it: instead, AdBlue sinks to the bottom of that tank, right where fuel is drawn from. Ask the staff to help push the vehicle away from the petrol pump if you are at a forecourt — the Esso, the Texaco or anywhere else. Leave it where it is if you're on your own drive around Tanfield Lea. Already started? Pull over once it is safe, then switch off. Leave the A1(M) — under 10 miles out of Tanfield Lea — at the next exit. Tell us roughly how far it went: a run towards Newcastle upon Tyne, under 10 miles away, is a bigger job than a short hop across Tanfield Lea. ## When we get there in Tanfield Lea, what occurs? Our technicians come to your car wherever it has stopped, whether that's outside Tanfield Lea Community Primary School, close to Tanfield Lea Community Centre or on your own driveway. What liquid was put in, the quantity, and if it ran: our engineers ask since those answers decide both work and price. On the phone call itself, you hear our price — before dispatch. Draining your tank comes next, then a full flush of the fuel system. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own — which is why that counts more here than with petrol. The filter flushed or, if needed, swapped; fresh diesel in; then a test of the vehicle. Before we go, our technicians fire it up and check that it's running smoothly. Using pumps safe on a working forecourt and quiet enough to use outside a house at night, most jobs where your engine hasn't run take about half an hour once our technicians arrive. Your insurer will ask for an engineer's report and the VAT invoice, and both are yours at the end. Payment is on the day, with no money upfront. It's worth looking at your policy as the van travels to you: misfuelling cover comes with many policies. ## About Tanfield Lea Tanfield Lea is a village in County Durham, situated on the riverside at an elevation of 156 metres, with terraced housing being the predominant type of accommodation. Tanfield Lea lies approximately 7.8 miles from Newcastle upon Tyne, in the north east of England. Tanfield Lea is close to nearby places such as Tantobie, Harperley, and Tanfield, and is home to around 1644 residents. Tanfield Lea is located 242.2 miles north of London, in a scenic area of the north east region. ## AdBlue drains across Durham, Tanfield Lea included Tanfield Lea is a village, and our teams that cover it also work the towns around it, Harperley and Tanfield among them, across the DH postcode area. A postcode starting DH9 9 gets the van to you fastest. The car stays where it is. Anywhere it stands — beside Tantobie Community Centre, in a layby en route to North Leigh Play Area, on a drive — that's where it is drained. Ring and ask instead of guessing if you're close to a border, or somewhere hard to describe, like the back of White Le Head Methodist Church. ## Tanfield Lea drivers: the short version Pour nothing till you've read the cap. Petrol in Diesel empties it on the spot, anywhere in Durham, if AdBlue has gone in the diesel tank regardless — so leave the vehicle off and call 0333 366 0103.