--- title: Explained: AdBlue in a Diesel Tank Owthorne canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/owthorne-east-riding-of-yorkshire/ location: Owthorne county: East Riding of Yorkshire latitude: 53.735800 longitude: 0.022420 service: AdBlue in a Diesel Tank updated: 2026-10-15 --- # AdBlue in a Diesel Tank in Owthorne: Why It Happens and How to Avoid It If AdBlue is already in your diesel tank, stop reading for a moment: leave your engine and the ignition off and ring 0333 366 0103. A drain and a thorough flush, carried out right where the vehicle sits around Owthorne, is usually all it needs when caught before the motor runs. The rest of this page covers why it takes place and how to ensure it does not — useful if you're reading ahead of time. ## Why does AdBlue in a diesel motor need its own filler? No single liquid but two: that's what plenty of modern diesels near Owthorne and Rimswell carry, with diesel for the motor. Its own tank keeps it, and from there it goes to your exhaust, and there spraying treats the gas. Different tanks, different fillers. Other cars keep the AdBlue filler in the boot or under the bonnet; a lot more place the two side by side behind one flap. Diesel gets filled on every forecourt visit, week in, week out. Much less frequently, the AdBlue side is filled — mostly from a bottle, by someone working out where it goes. It's in that gap that the mistake lives. ## AdBlue in the diesel tank around Owthorne: how it happens Carelessness rarely causes it. What does is three things lining up at once. The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out altogether, your vehicle goes into limp mode. So the top-up is done in a hurry: on a drive off Northfield before work, or in the car park at The Northfield on the way home. The old car's cap is where the hand reaches — but a hire car, a new motor or a company car keeps the fillers somewhere else. That is the second thing: an unfamiliar vehicle. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the pour once it has started. Whether it happens in Withernsea or the middle of Owthorne, it is the same few seconds. ## How to tell the AdBlue filler from the diesel one Whether a Owthorne forecourt or a driveway over in Hollym, spend a few seconds over these before any is poured in. - Blue and lettering: an AdBlue cap is often blue, or says "AdBlue", where a diesel cap usually does not. Go by the cap, not where it sits. - The size. On plenty of cars the AdBlue filler neck is the smaller of the two. - A label inside the fuel flap often says which fuel goes where, on many motors. Look for it. - In your boot or under the bonnet: that is where the filler sits if it's not by your diesel cap, and the handbook tells you which. - Picking up a hire or company car, say at the car park outside New Clee? Ask the person who drove the vehicle last before you set off, not once the light comes on. ## Keeping AdBlue out of the diesel tank when you top up On the day the warning comes on — wherever it is in East Riding of Yorkshire — a routine to follow. - Not in a rush on the side of Owthorne Walk, not on a slope, not with your motor running: park then switch off first. - Say "AdBlue" out loud as you unscrew the cap, after finding the AdBlue filler and read it. Daft, perhaps, but it works. - The diesel cap remains on. When the two sit under a flap, make sure it's closed before the bottle comes up. - Pour slowly, using the bottle's own spout. Stop when it's full or when the bottle is empty. - Before starting your car, close the cap and look again that the diesel cap never opened off. Stop there if you find, at step two or three, that you've already poured into the diesel side. Don't carry on to step five. ## Put AdBlue in your diesel tank in Owthorne already? Then the order of things is short. Don't start your engine. Don't switch the ignition on; on many diesels that alone runs the fuel pump. AdBlue does not mix with diesel — it sinks to the bottom of that tank, where your fuel is drawn from — so do not top up with diesel to dilute it. If you are on a forecourt, whether it's the Jet or the Patrington Garage, ask the attendants to help push the vehicle clear of the petrol pump. If you're on your own drive in Owthorne, leave it where it sits. Stop as soon as it is safe then switch off, if the engine has already run. Owthorne sits under 25 miles from the M180; there, use the next 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 Owthorne. ## Our arrival in Owthorne, and what happens next Wherever the car came to rest, whether by Withernsea Primary School, beside St Matthew's Church or on your own drive, the van travels to it. We ask what got in, roughly how much, and if it has run, because the replies settle this work and our quote. You get that price on the phone, before anyone heads out. Next: a drain, then a full flush of the entire system. Not like petrol, AdBlue leaves crystals and eats at certain fuel-system metals, and none of it washes out unaided. Hence it counts more. Testing is at the end: before that, fresh diesel goes in, and your filter is cleaned or changed if necessary. We don't leave until it has been started and is running correctly. Most jobs are done in roughly half an hour once our technicians get there, as long as the motor hasn't run — and the pumps our technicians use are safe on a busy forecourt and quiet at night beside a house. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Before we get there, have a look at your policy; plenty carry cover for misfuelling. ## About Owthorne itself Owthorne is a small coastal locality in the East Riding of Yorkshire, situated near the town of Withernsea and overlooking the North Sea. Owthorne lies at a low elevation of around 12 metres, and its terraced housing reflects the traditional style of many Yorkshire seaside communities. Owthorne is located near the Rimswell Valley and Waxholme, and is within commuting distance of Kingston upon Hull. ## AdBlue drains across East Riding of Yorkshire, Owthorne included Throughout HU postcodes, our teams that cover Owthorne — a coastal area — work the surrounding places too, Waxholme and Rimswell Valley included. The van gets to you fastest with a postcode starting HU19 2. There's no need to shift the vehicle. A driveway, a lay-by on the way to Withernsea AFC, a side street close to Withernsea Lighthouse Museum: we drain it where it stands. If you are close to a boundary, or somewhere hard to describe like the back of Withernsea Methodist Church, ring and ask rather than assuming. ## For Owthorne motorists, the short version Read the cap before you tip. Petrol in Diesel empties it on the spot, anywhere in East Riding of Yorkshire, if AdBlue has gone in your diesel tank regardless — and so leave the vehicle off and call 0333 366 0103.