--- title: Explained: AdBlue in a Diesel Tank Bielside canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/bielside-east-lothian/ location: Bielside county: East Lothian latitude: 55.995430 longitude: -2.552870 service: AdBlue in a Diesel Tank updated: 2026-10-10 --- # Bielside: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? Keep the engine and ignition off then ring 0333 366 0103 now — the rest can wait when AdBlue is already in your diesel tank. A drain plus a thorough flush, done right where the vehicle sits in Bielside, is usually what it takes when caught before your engine runs. If you are reading before it has happened, the rest of this page is about why it occurs and how to make sure it doesn't. ## Two fillers, two tanks: AdBlue in a diesel motor Many current diesels on the roads round Bielside and Marine Court carry two liquids, not one. Diesel goes to the engine. Your exhaust, not the motor, is where AdBlue ends up: dosed into the fumes to clean them, from a separate tank. Different tanks, different fillers. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet. At the petrol pump, the diesel side gets filled all the time. The AdBlue side is topped up far less frequently, usually from a bottle, and normally by somebody who has to stop and think where it goes. The error lives in that gap. ## Bielside: how AdBlue in the diesel tank happens Seldom is it carelessness: usually three things coincide. Haste follows from the warning. The car warns you as AdBlue runs low, and an empty tank puts it into limp mode — so the top-up happens quickly, before work on a drive off Sea Road, or on the way home in the car park outside the pub in the village. The old car's filler is where the hand reaches — yet a rental car, a new car or a company car puts the fillers somewhere else. That is the second factor: an unfamiliar motor. Lastly, the bottle goes in: a diesel filler or AdBlue one, it goes in just as readily, and after the tip begins, no part halts it. West Barns or the middle of Bielside: it is the same few seconds in both. ## The AdBlue filler and your diesel filler: telling them apart Check these first, at a forecourt around Bielside or a driveway over in Stanley Place. A few seconds, no more. - Colour and lettering: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually does not. Go by the cap, not its position. - Check the size: the smaller neck is, on plenty of motors, the AdBlue one. - A label inside your fuel flap often shows which fuel goes where, on many vehicles. Check for it. - In the boot or under the bonnet: that is where your filler sits if it's not by the diesel cap, and the handbook says which. - The person who drove the car last. On a hire or company car picked up from somewhere like the car park outside Dunbar, ask before you leave, not when the light comes on. ## How to top up without AdBlue in your diesel tank A routine for the day the light comes on, wherever around East Lothian that is. - Not in a rush on the side of Strathearn Court, not on a slope, not with the motor running: park then switch off properly. - Daft as it sounds, speaking "AdBlue" aloud while you unscrew the cap works — once you have located your filler and read the cap. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — then leave the vehicle on. - Stop when your tank fills or the bottle is empty; before that, tip slowly using the own spout. - Close the cap, and check once more — making sure your diesel filler stayed closed throughout. After that, start your car. Stop there if you find, at stage two or three, that you've already poured into the diesel side. Never go on to stage five. ## Already put AdBlue in your diesel tank around Bielside? Then the order of things is short. Don't start your motor. Leave the ignition off too, because on many diesels switching it on by itself starts your fuel pump. Diluting it with more diesel fails, since AdBlue settles to the base instead of blending — and that's where the fuel is pulled from. On a forecourt — JET, Asda or another — the attendants will usually help push your car clear, when you ask. Leave it where it is if you are on your own driveway around Bielside. Already run? Stop when it is sensible, then turn off. The next exit is where to leave when you're on the M8, under 50 miles from Bielside. Distance counts — a quick hop across Bielside is a smaller job than heading under 25 miles to Edinburgh — so tell us roughly how far it went. ## Our arrival in Bielside, and what occurs next The van comes to the car anywhere it has come to rest — your own driveway, near War Memorial, or by the local primary school. Those replies decide the work and our quote, and so we ask what got in, roughly how much, and if it has run. That quote comes over the phone, before any van leaves. Draining that tank comes next, followed by a full flush of the system. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own — which is why that counts more here than with petrol. Your filter is flushed, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested. We don't leave until it has been fired up and is running properly. Using pumps fine on a busy forecourt and quiet enough for use outside a house at night, most jobs where your motor has not run need roughly half an hour once our technicians are there. The insurer usually wants an engineer's report and the VAT invoice, and you get both at the end. Payment is on the day, with no deposit. Wrong-fuel cover is part of plenty of insurance policies — and so make use of the wait to check yours. ## About Bielside itself Bielside is a small coastal locality in East Lothian, situated near the towns of West Barns and Dunbar, and approximately 24 miles east of Edinburgh. Bielside sits at a low elevation of around 7 metres above sea level, looking out over the Firth of Forth. Bielside is characterized by its semi-detached housing and quiet residential atmosphere, with nearby Belhaven and Winterfield Mains also forming part of the local community. ## AdBlue drains around Bielside and across East Lothian Bielside is a coastal area, and the vans that cover it also work the towns around it, Winterfield Mains and Belhaven among them, across the EH postcode area. Quote a postcode that starts EH42 1, and our van arrives fastest. There's no need to move the vehicle. The drain happens on the spot, be it a driveway, a street near West Barns Village Hall, or a layby on the way to The Brownie Garden. Awkward to pin down, like the back of East Links Family Park? By a border? Asking beats assuming, and so ring. ## The short version for Bielside drivers Pour no AdBlue till you've read the cap. Even so AdBlue in your diesel tank? Petrol in Diesel can empty it wherever it is, anywhere across East Lothian: keep the vehicle off and call 0333 366 0103.