--- title: Brigg: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/brigg-lincolnshire/ location: Brigg county: Lincolnshire latitude: 53.551930 longitude: -0.486480 service: AdBlue in a Diesel Tank updated: 2026-10-14 --- # Brigg: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? Leave the motor and ignition off then phone 0333 366 0103 first — reading can wait when AdBlue is already in the diesel tank. Around Brigg, catching it before the motor runs normally means draining and a thorough flush where it stands. Nothing happened yet? Below, the rest of the page covers the why it takes place and the how to avoid it for good. ## AdBlue in a diesel car: two tanks, two fillers Many newer diesels around Mill Place, as well as Brigg, carry on two fluids; your motor gets only the diesel. Your exhaust, not the motor, is where AdBlue goes: dosed into the fumes to clean them, from a separate tank. There's a filler on every tank. Plenty of cars share a single flap for both, while some put the AdBlue filler to the boot or under the bonnet. Filling the diesel side at the petrol pump happens all the time. The AdBlue side is filled far less frequently, normally from a bottle, and normally by somebody who has to stop and think where it goes. It's in the gap that the slip lives. ## How does AdBlue in your diesel tank happen around Brigg? Carelessness rarely explains it. Instead is three things lining up together. On a drive off Bigby Road before work, or in the car park outside The White Horse heading home: that's where the hurried top-up takes place. Why the rush? As AdBlue gets low the vehicle warns you, and if it is empty, limp mode kicks in. Then the car is unfamiliar. A hire car, a new car or a company car puts the fillers where your last one did not, and the hand gets to for the cap it would have 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. Whether it happens in Westrum or the middle of Brigg, it's the same few seconds. ## The AdBlue filler and the diesel filler: telling them apart Look at these before pouring, on a forecourt in Brigg or a driveway over in Castlethorpe. A few seconds, no more. - Colour and marking: an AdBlue cap is often blue, or says "AdBlue", where a diesel cap usually doesn't. Trust the cap, not its position. - Look at the size: the smaller neck is, on many cars, the AdBlue one. - Look inside your fuel flap: many vehicles have a label there saying which fuel goes where. - The handbook shows where it lives if the filler is not next to your diesel cap: your 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 the nearest station, ask before you leave, not when the light comes on. ## Keeping AdBlue out of the diesel tank when you top up For the day the warning appears — wherever it is across Lincolnshire — a routine to use. - Stop somewhere level, engine off, with time to spare — not hurried on the side of A18. - Silly as it sounds, saying "AdBlue" aloud while you unscrew the cap works — after you've found the filler and read the cap. - The diesel cap stays on. Where both share a flap, confirm it is closed before lifting the bottle. - Finish when that tank fills or the bottle runs dry; before that, tip gently through the built-in spout. - Before starting the car, shut the cap and check again that your diesel cap was never came off. If at step two or three you find you have already poured into your diesel side, stop there. Step five is out. ## AdBlue in your diesel tank already, in Brigg? Short order, then. Top of it: the motor remains unstarted. The fuel pump starts on many diesels as soon as your ignition is switched on — and so keep it off. Topping up with diesel will not dilute it: rather than mixing, AdBlue drops to the base of the tank, right where fuel is taken from. At a forecourt — Tesco, JET or any other — the attendants will usually help roll the car clear, when you ask. Leave it where it is if you're on your own drive around Brigg. When the engine has run already, pull over somewhere safe and turn the car off. Leave the M180 — under a mile out of Brigg — at the first exit. Tell us about how far it went: a run towards Kingston upon Hull, under 15 miles away, is a bigger job than a short hop across Brigg. ## Brigg: what occurs when our engineers get there Outside St Mary's Catholic Primary Voluntary Academy (Brigg), close to St. John's the Evangelist Church or on your own drive: wherever the vehicle has stopped, our engineers come to it. Which fluid went in, the quantity, and if it ran: our technicians ask because the answers decide both work and quote. Nobody sets off before you have heard our price by phone. Draining your tank comes next, then a thorough flush of the system. Much more than with petrol, it matters here: the crystals build up, some metals are attacked, and nothing clears out unaided, however long it sits. The fuel filter is cleaned, or replaced where it needs to be; clean diesel goes in; and the car is tested. Next our engineers fire it up and check it runs properly before we leave. If your engine has not run, the majority of jobs take about half an hour once we are there, using pumps that are safe on a working forecourt and quiet enough to use outside a house at night. No money in advance; you settle up that day. At the end, the VAT invoice and the report from the engineer go to you for your insurer. Misfuelling cover is part of many insurance policies — and so use the wait to check yours. ## About Brigg Brigg is a town situated on the banks of the River Ancholme in Lincolnshire, with a low elevation of around 9 metres above sea level. Brigg lies near several smaller settlements, including Westrum, Island Carr, and Scawby Brook, and is close to the city of Kingston upon Hull. Brigg has a population of approximately 6514 people, predominantly living in detached housing. Brigg is located about 142 miles north of London, in a region that is often associated with the Yorkshire and the Humber area, although it is technically part of Lincolnshire. ## Brigg and Lincolnshire: AdBlue drains across the area As a riverside town, Brigg has the same vans as nearby areas — Island Carr, Scawby Brook — all the way across DN postcodes and the wider area around them. Quote a postcode beginning DN20 8, and our van gets there fastest. The car does not need to move. Draining happens right there, be it a driveway, a road near Brigg Methodist Church, or a lay-by towards Kings Avenue Gardens. If you're near a boundary, or somewhere hard to describe like the back of Brigg Farmers Market, ring and ask rather than assuming. ## For Brigg drivers, the short version Always, the cap; after that, the pour. Still AdBlue in your diesel tank? Petrol in Diesel will empty it wherever it is, anywhere around Lincolnshire: switch it off then ring 0333 366 0103.