--- title: AdBlue in a Diesel Tank Little Braunston: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/little-braunston-northamptonshire/ location: Little Braunston county: Northamptonshire latitude: 52.288400 longitude: -1.196270 service: AdBlue in a Diesel Tank updated: 2026-10-10 --- # Avoiding AdBlue in a Diesel Tank in Little Braunston: Why It Occurs Stop reading a minute when your diesel tank already holds AdBlue in it: ignition off, motor off, and ring 0333 366 0103. In Little Braunston, finding it before the engine runs normally leaves draining and a full flush on the spot. Not happened yet? Below, the page covers the why it takes place and the how to prevent it altogether. ## Why does AdBlue in a diesel car need its own filler? Plenty of modern diesels around Welton, like those in Little Braunston, run on two liquids; the engine takes only your diesel. Stored in a tank of its own, AdBlue is sprayed into the exhaust stream to clean it. Each tank has its own filler. Other motors keep the AdBlue filler in your boot or under the bonnet; a lot of others have both together behind one flap. The diesel side is topped up at the petrol pump all the time. The AdBlue side is fuelled far less regularly, normally from a bottle, and normally by somebody who has to stop and think where it goes. Mistakes happen in that gap between the two. ## Little Braunston: how AdBlue in the diesel tank takes place Rarely is it carelessness: normally three things coincide. First, the warning. Low AdBlue brings a warning from the car, and letting it run out leads to limp mode — so a rushed top-up, maybe before work off Dark Lane, or at The Admiral Nelson on the way home that evening. New-to-you motors are second, as well. Rentals, new motors and company cars put their fillers in new places, and the hand goes for the cap it used on the old one. Nothing halts the tip once 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 out in Braunston or bang in the heart of Little Braunston. ## How to tell the AdBlue filler from the diesel one Whether a Little Braunston forecourt or a drive out in Ashby St Ledgers, spend a few seconds over these before any is poured in. - Blue and marking: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap normally doesn't. Trust the cap, not where it sits. - Plenty of vehicles fit AdBlue the smaller filler of the two. - The flap. Look inside your fuel flap for a label. Plenty of vehicles say there which fuel goes where. - The handbook. If the filler isn't by your diesel cap, it's in the boot or under the bonnet, and the handbook says which. - Collecting a hire or company car, perhaps at the car park at Long Buckby? Ask the person who drove the vehicle last before you set off, rather than when the light comes on. ## Topping up AdBlue without it reaching your diesel tank When the light comes on, anywhere across Northamptonshire, use this routine. - Switch off after you park — level ground, engine off, and never in a rush beside Welton Road at the roadside. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it works. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — and leave it on. - Gently does it, through the bottle's own spout, till it is full or the bottle runs out. - Only after that, start the vehicle: close the cap, check once more, and make sure the diesel cap was never opened. If at stage two or three you find you have already poured into the diesel side, stop there. Don't go on to step five. ## AdBlue in your diesel tank already, in Little Braunston? Then the order of things is short. Don't start your motor. On plenty of diesels your ignition alone runs the fuel pump, so don't switch it on. Topping up with diesel will not thin it: instead, AdBlue drops to the base of your tank, right where the fuel is drawn from. At a forecourt — Gulf, Esso or another — the staff will normally help push the car clear, if you ask. Leave it where it is if you are on your own driveway in Little Braunston. If your motor has already run, stop as soon as it is safe then switch off. The next exit means where to leave when you are on the M45, under 5 miles from Little Braunston. Mileage matters — a short hop across Little Braunston makes a smaller job than driving under 25 miles to Coventry — so say roughly how far it went. ## When our engineers turn up in Little Braunston, what takes place? Our van comes to the vehicle anywhere it has come to rest — your own drive, near Braunston Village Hall, or by Braunston Church of England Primary School. Which liquid went in, the quantity, and if it ran: our engineers ask because the answers set both work and quote. The price is given over the phone, before any van leaves. Next: draining, then a thorough flush of the entire system. Much more than with petrol, it matters here: the crystals build up, certain metals are attacked, and none of it clears out on its own, however long it sits. The filter is flushed, or replaced where it needs to be; clean diesel goes in; and your car is tested. We don't go until it has been fired up and is running smoothly. Unstarted cars mostly mean a half-hour job after the moment we arrive. The equipment is safe on a live forecourt, and hushed enough for a driveway late at night. Nothing in advance; you settle up that day. At the end, a VAT invoice and the report from the engineer are handed to you for your insurer. Many insurance policies include misfuelling cover, and so it is worth checking yours while we're on the way. ## About Little Braunston itself Little Braunston is a suburban area situated on the banks of a river in Northamptonshire, with a mix of semi-detached housing and a population of around 1059 residents. Little Braunston lies near the larger village of Braunston and other nearby places such as Wolfhamcote and Wolfhampcote, and is located approximately 15.5 miles from Coventry. Little Braunston's riverside setting and relatively low elevation of 104 metres contribute to its geographical character. Little Braunston is also within commuting distance of major cities, being around 70.6 miles from London. ## AdBlue drains round Little Braunston, and Northamptonshire beyond Little Braunston is a residential suburb, and the teams that cover it also work the towns near it, Wolfhamcote and Wolfhampcote among them, across the NN postcode area. A postcode starting NN11 7 gets the van to you fastest. There's no need to shift the car. Draining happens on the spot, whether a drive, a street near All Saints, or a lay-by towards Kentle Wood. If you're close to a border, or somewhere hard to explain like the back of Micklewell Community Hub, ring and ask rather than guessing. ## In short, for Little Braunston drivers Tip nothing until you have read the cap. If AdBlue has gone in the diesel tank regardless, leave the car off and call 0333 366 0103. Petrol in Diesel empties it where it sits, anywhere across Northamptonshire.