--- title: Howden: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/howden-west-lothian/ location: Howden county: West Lothian latitude: 55.895050 longitude: -3.515520 service: AdBlue in a Diesel Tank updated: 2026-10-12 --- # AdBlue in a Diesel Tank in Howden: Why It Happens and How to Stop It Pause reading a minute when your diesel tank already has AdBlue in it: ignition off, motor off, and phone 0333 366 0103. Usually, when the motor hasn't run, it is drained and thoroughly purged where your car sits in Howden. If you're reading before it has happened, the remainder of this page is about why it occurs and how to make sure it doesn't. ## Two fillers, two tanks: AdBlue in a diesel vehicle No single fluid but two: that is how plenty of newer diesels near Howden and Almondvale run, with diesel feeding the motor. Kept in a tank of its own, AdBlue is sprayed into your exhaust gas to clean it. Different tanks, separate fillers. Other vehicles keep the AdBlue filler in your boot or under the bonnet; a lot of others place the two together behind one flap. Diesel goes in at every filling station visit, week in, week out. Seldom topped up, AdBlue normally comes from a bottle, tipped by a driver who has to stop and think which filler it needs. It's in that gap that the mistake happens. ## Howden: how AdBlue in the diesel tank takes place Three things tend to line up, and carelessness is seldom one of them. First, the warning. Low AdBlue triggers a warning from the car, and running out leads to limp mode — so a hurried top-up, maybe before work off Bancroft Avenue, perhaps at The Tower on the way home after work. New-to-you motors come next, too. Hire cars, new cars and company motors place their fillers in new places, and the hand goes for the cap used on the old one. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip after it has started. Ladywell or the heart of Howden: it is the same few seconds in both. ## Telling the AdBlue filler from your diesel filler A few seconds is all these take — so check them before you tip anything, on a drive in Dedridge or a forecourt around Howden. - Colour and lettering: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap normally doesn't. Go by the cap, not where it sits. - The size. On many motors the AdBlue filler neck is the smaller of the two. - Open the filler flap and look for a label — many vehicles show what belongs in which inlet right there. - The handbook shows which it is if your filler isn't next to the diesel cap: the boot, or under the bonnet. - Picking up a hire or company car, say at the car park outside Livingston North? Check with the person who drove it last before leaving, not when the light goes on. ## Topping up AdBlue without it reaching the diesel tank When the light goes on, wherever across West Lothian, follow this routine. - Stop somewhere level, motor off, with time in hand — never rushing on the side of Howden East Road. - Daft as it sounds, speaking "AdBlue" aloud while you unscrew the cap does the trick — once you've found the filler and read it. - The diesel cap stays on. When both share a flap, confirm it's shut before the bottle comes up. - Finish once your tank fills or the bottle runs dry; before that, tip gently through the own spout. - Close the cap and check again. Make sure the diesel cap was never opened. Only then start the vehicle. If at stage two or three you find you have already poured into your diesel side, stop there. Never go on to step five. ## Already put AdBlue in your diesel tank around Howden? Do not start your engine: that's how the short order of things begins. Do not switch your ignition on; on many diesels that alone runs the fuel pump. Don't top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of your tank, where the fuel is pulled from. The attendants at Shell, Asda or another forecourt will normally lend a hand to push the car away if you ask. If you are on your own drive around Howden, leave it where it sits. If the motor has already run, stop as soon as it is safe then switch off. Howden sits under 3 miles from the M8; there, take the next junction. About how far did it go? Hopping across Howden is less a job than a run of under 15 miles towards Dunfermline, so say. ## Our arrival around Howden, and what takes place next Our engineers come to the car wherever it has stopped, whether that is outside the local primary school, near Livingston Baptist Church or on your own driveway. Our technicians ask what went in, about how much, and whether it's run, since the replies decide the work and the quote. Nobody sets off before you have heard the quote over the phone. The fuel system is then cleaned thoroughly, once your tank is emptied. More than with petrol, it counts here: crystals form, certain metals corrode, and none of that washes away unaided, however long it is left. After your filter has been cleaned — or replaced, if needed — fresh diesel is added, and then the car is tested. Before we go, we fire it up and confirm that it is running correctly. Unrun vehicles usually mean a half-hour visit from the moment we arrive. The kit is safe on a live forecourt, and hushed enough for a residential street after dark. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Misfuelling cover is part of plenty of insurance policies — so use the wait to look at yours. ## About Howden Howden is a suburban area in West Lothian, situated inland at an elevation of 143 metres, with terraced housing being the predominant type of accommodation. Howden is located near the towns of Ladywell and Craigshill, and is part of the wider Livingston area. Howden sits approximately 12 miles from Dunfermline, and is around 333 miles northwest of London. ## Howden and West Lothian: AdBlue drains across the area Over EH postcodes, the vans that cover Howden — a residential suburb — work the nearby locations too, Livingston and Craigshill included. A postcode starting EH54 6 gets the van to you fastest. Shifting the vehicle isn't necessary. We drain it where it is — a side street near Forestbank Community Centre, a lay-by on the way to The Walled Garden, a driveway. Guessing won't help at the back of Howden Park Centre, close to a boundary, or somewhere hard to describe; ring and check. ## The short version for Howden motorists Read the cap before you tip. If AdBlue has gone in your diesel tank regardless, leave the car off then phone 0333 366 0103. Petrol in Diesel empties it where it waits, anywhere across West Lothian.