--- title: Explained: AdBlue in a Diesel Tank Digby canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/digby-lincolnshire/ location: Digby county: Lincolnshire latitude: 53.080490 longitude: -0.383300 service: AdBlue in a Diesel Tank updated: 2026-10-16 --- # AdBlue in a Diesel Tank in Digby: How It Happens and How to Avoid It AdBlue already in the diesel tank? In that case put this page aside a moment, keep the ignition and engine off, then phone 0333 366 0103. A drain plus a thorough flush, carried out just where the car sits around Digby, is normally what it needs when caught before your engine runs. If you are reading before it has happened, the rest of this page is about why it takes place and how to make sure it does not. ## Two fillers, two tanks: AdBlue in a diesel vehicle Not one liquid but two: that's what plenty of modern diesels around Digby and Ashby de la Launde run, with diesel feeding your motor. Kept in a tank of its own, AdBlue is sprayed into the exhaust stream and cleans it. Each tank has its own filler. Under one flap, next to each other: that is the arrangement on a lot of vehicles. On others, AdBlue's filler is beneath the bonnet or in the boot instead. Diesel goes in at every filling station visit, again and again. Someone who has to stop and think where it goes normally fills the AdBlue side, from a bottle, and far less frequently. That gap is where the error lives. ## AdBlue in the diesel tank around Digby: how it takes place It's rarely carelessness. Three things tend to line up. To start with, the warning. Low AdBlue triggers a warning from the vehicle, and running out means limp mode — so a rushed top-up, maybe before work off Harrowby Close, perhaps outside The Red Lion on the way home that evening. New-to-you motors are next, too. Hire cars, new motors and company motors put their fillers in new places, and the hand goes for the cap it used on the old one. Nothing halts the tip after it has started, because a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. Rowston or the middle of Digby: it takes the same few seconds either way. ## The AdBlue filler and the diesel filler: telling them apart Be it a Digby forecourt or a drive out in Kirkby Green, take a few seconds over these before any goes in. - Blue and marking: an AdBlue cap is frequently blue, or says "AdBlue", where a diesel cap usually doesn't. Trust the cap, not where it sits. - On many vehicles, the size tells: AdBlue has the smaller filler neck. - A label inside the fuel flap frequently says which fuel goes where, on plenty of cars. Check for it. - In your boot or under the bonnet: that is where your filler is if it's not by the diesel cap, and the handbook says which. - The person who drove the vehicle last. On a hire or company car collected from somewhere like the car park at Ruskington, ask before you leave, not when the light comes on. ## Topping up AdBlue without it reaching the diesel tank For the day the light comes on — wherever it is across Lincolnshire — a simple routine to follow. - Park and switch off. Not on a slope, not with the motor running, and not in a rush on the side of Station Road. - Say "AdBlue" out loud as you unscrew the cap, once you find the AdBlue filler and reading it. Silly, perhaps, yet it does the trick. - Both under one flap? Then make sure the cap on the diesel side is still shut before raising the bottle. - Finish once your tank is topped up or the bottle runs dry; until then, tip gently through the built-in spout. - Before you start your car, shut the cap and check again that your diesel cap was never came off. Discover at the second or third step that AdBlue went in the diesel filler? That's where you stop. Do not go on to stage five. ## Put AdBlue in your diesel tank in Digby already? Short order, then. First: your motor stays unstarted. Do not switch your ignition on; on many diesels that alone runs the fuel pump. Filling up with diesel will not dilute it: rather than mixing, AdBlue drops to the bottom of that tank, right where fuel is drawn from. The staff at L Brackenbury & Son Ltd, D C Baxter Motors Ltd or any forecourt will normally lend a hand pushing the vehicle clear when asked. Leave it where it is if you're on your own drive in Digby. If your motor has already run, stop as soon as it is safe then switch off. Digby lies under 50 miles from the M180; on it, use the first junction. Tell us about how far it went: a run towards Lincoln, under 15 miles away, is a bigger job than a short hop across Digby. ## When our engineers get there around Digby, what occurs? Our van reaches the car anywhere it stopped — your own drive, near Digby War Memorial Hall, or by Digby Church of England School. Those answers settle the work and the price, so our technicians ask what was put in, about how much, and if it's run. Nobody sets off until you have had our price by phone. Draining that tank comes next, followed by a thorough flush of the fuel system. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own. After the filter is cleaned — or replaced, where needed — fresh diesel is added, and finally your vehicle gets tested. We don't leave until it has been started and is running smoothly. With pumps safe on a working forecourt and quiet enough for use outside a house at night, most jobs where your motor has not run need about half an hour once our engineers are there. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Before we get there, take a look at your insurance documents; many carry cover for misfuelling. ## About Digby itself Digby is a small village in Lincolnshire, situated on the riverside at a low elevation of around 15 metres. Digby lies near the villages of Rowston, Dorrington, and Bloxholm, and is approximately 12.5 miles from the city of Lincoln. Digby has a population of around 608 people, with a predominance of detached housing. Digby is also relatively distant from London, at around 109.2 miles away. ## Digby and Lincolnshire: AdBlue drains across the area Dorrington and Bloxholm are among the towns around Digby, a village, that the same teams cover, over LN postcodes. Quote a postcode that starts LN4 3, and the van gets there fastest. There's no need to move the vehicle. Anywhere it stands — near Digby Village Cross, on a lay-by heading to Digby Doorstep Green, on a drive — that's where it is emptied. Awkward to pin down, like the back of St. Thomas of Canterbury? Close to a border? Checking beats guessing, and so phone. ## In short, for Digby drivers Pour no AdBlue till you've read the cap. AdBlue in your diesel tank after all? Leave the car switched off then call 0333 366 0103; Petrol in Diesel empties it on the spot, across Lincolnshire.