--- title: Explained: AdBlue in a Diesel Tank Portsoy canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/portsoy-aberdeenshire/ location: Portsoy county: Aberdeenshire latitude: 57.683310 longitude: -2.691500 service: AdBlue in a Diesel Tank updated: 2026-10-23 --- # Why It Occurs and How to Avoid It: AdBlue in a Diesel Tank in Portsoy Stop here for a moment when your diesel tank already holds AdBlue in it: ignition off, motor off, and ring 0333 366 0103. A drain and a full flush, done right where the vehicle sits in Portsoy, is usually all it needs when found before your motor runs. The rest of this page covers why it occurs and how to make sure it does not — handy if you're reading ahead of time. ## AdBlue in a diesel motor, and its separate tank Plenty of current diesels on the roads about Portsoy and Boyndie carry two liquids, not one. Diesel goes to your motor. Its own tank holds it, and from there it goes to the exhaust, and there a spray treats the gas. There's a filler on every tank. On a lot of motors 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, your diesel side gets filled constantly. The AdBlue side is filled far less frequently, normally from a bottle, and usually by a person who has to stop and think where it goes. The mistake lives in that gap. ## Portsoy: how AdBlue in the diesel tank happens It's hardly ever carelessness. Three things tend to line up. On a drive off The Square before work, or in the car park at The Shore Inn on the way home: that is where the rushed top-up happens. Why the rush? As AdBlue gets low the car warns you, and if it's empty, limp mode follows. New-to-you motors come next, as well. Rentals, new motors and company motors put their fillers in new places, and the hand goes for the cap it used on the old one. No part halts 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 takes a few seconds, whether in Seatown or right in the centre of Portsoy. ## How to tell the AdBlue filler from the diesel one Before you tip anything, whether on a driveway in Brodiesord or a forecourt in Portsoy, check these. They take a couple of seconds. - Check the cap rather than going by where it sits: AdBlue ones are often blue or marked "AdBlue", and diesel caps usually aren't. - Look at the size: the smaller neck is, on many vehicles, the AdBlue one. - Open the flap and look for a label — many vehicles show which belongs in which filler right there. - The handbook says which it lives if the filler isn't next to the diesel cap: your boot, or under the bonnet. - Ask the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park at the nearest station. ## AdBlue top-ups that never reach your diesel tank A routine for the day the light comes on, wherever across Aberdeenshire that is. - Park then switch off. Not on a slope, not with your motor running, and not in a rush on the side of Cullen Street. - Locate the AdBlue filler, check the cap, and say the word "AdBlue" out loud as unscrewing it. It sounds daft. It does the trick. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — and leave the car on. - Slowly is best, through the bottle's own spout, till it's full or the bottle is empty. - Shut the cap, and look once more — making sure your diesel cap remained shut throughout. After that, start the vehicle. Find at the second or third step that AdBlue went in the diesel tank? That's where you stop. Skip step five altogether. ## Portsoy: already put AdBlue in the diesel tank? Brief list, then. Top of that: your motor stays unstarted. Don't switch your ignition on; on plenty of diesels that alone runs the fuel pump. Don't top up with diesel to dilute it: AdBlue doesn't mix with diesel, it sinks to the bottom of the tank, where the fuel is pulled from. Ask the staff to help push the car away from the petrol pump if you are at a forecourt — the the nearest petrol station, the another forecourt nearby or anywhere else. Leave it where it is if you are on your own driveway in Portsoy. Stop as soon as it is safe and switch off, if your motor has already run. The next junction is where to come off if you're on the M90, over 50 miles from Portsoy. Distance counts — a quick hop across Portsoy makes a smaller job than driving under 50 miles to Aberdeen — so say about how far it went. ## What takes place when we arrive in Portsoy We come to the vehicle wherever it has stopped, whether that is outside the local primary school, near Portsoy Community Church or on your own drive. Those replies settle this work and our price, so our technicians ask what got in, about how much, and whether it has run. On the call itself, you are told the quote — before anything else. After that: draining, then a thorough flush of the whole system. Much more than with petrol, it matters here: crystals build up, some metals corrode, and nothing washes out unaided, however long it sits. After the fuel filter has been flushed — or renewed, where required — fresh diesel goes in, and finally your vehicle gets tested. Then our engineers fire it up and check it runs smoothly before we go. Most jobs are done in roughly half an hour after our engineers get there, as long as your motor hasn't run — and the pumps our technicians use are fine on a busy forecourt yet quiet after dark beside a house. The insurer usually wants the engineer's report and your VAT invoice, and you get both at the end. Payment comes on the day, with no money upfront. Plenty of insurance policies include misfuelling cover, and so it is worth checking yours whilst we're on the way. ## About Portsoy and where it is Portsoy is a small town situated on the north-east coast of Scotland, in Aberdeenshire, with a population of around 1727 people. Portsoy sits at an elevation of 19 metres, looking out over the Moray Firth, and is characterized by its semi-detached housing. Portsoy is located near other small communities such as Seatown, Sandend, and Fordyce, and is approximately 43 miles from the city of Aberdeen. Portsoy has a scenic coastal setting, with the town's layout influenced by its proximity to the sea. ## AdBlue drains about Portsoy, and Aberdeenshire beyond Sandend and Fordyce are among the places around Portsoy, a coastal town, that the same vans cover, over AB postcodes. Quote a postcode beginning AB45 2, and our van arrives fastest. No need to shift the car. Anywhere it stands — near Peaky Blinders Memorial, on a lay-by heading to Wally Green, on a drive — that is where it is emptied. Assuming doesn't help behind Institute Hall, on a border, or somewhere awkward to pin down; phone and ask. ## In short, for Portsoy motorists Before you tip, read the cap. Petrol in Diesel drains it where it stands, anywhere in Aberdeenshire, if AdBlue has gone in the diesel tank regardless — so leave the vehicle off and phone 0333 366 0103.