--- title: Explained: AdBlue in a Diesel Tank Bathford canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/bathford-somerset/ location: Bathford county: Somerset latitude: 51.400660 longitude: -2.302270 service: AdBlue in a Diesel Tank updated: 2026-10-08 --- # How It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Bathford AdBlue already in your diesel tank? Then set this page down a moment, keep your ignition and motor off, then phone 0333 366 0103. A drain plus a full flush, done just where your vehicle sits in Bathford, is normally what it takes if found before the engine runs. The remainder of this page covers why it takes place and how to make sure it doesn't — handy if you're reading ahead of time. ## Why does AdBlue in a diesel motor need its own filler? Plenty of modern diesels in Monkton Farleigh, as well as Bathford, carry on two fluids; the motor gets only the diesel. Kept in a tank of its own, AdBlue is fed into the exhaust gas and cleans it. There's a filler for each tank. Plenty of vehicles have a single flap for the two, while some move the AdBlue filler to the boot or under the bonnet. Filling your diesel side at the pump happens all the time. The AdBlue side is fuelled far less frequently, normally from a bottle, and usually by someone who has to stop and think where it goes. The mistake grows in the gap between the two. ## Bathford: how AdBlue in the diesel tank takes place Three things tend to come together, and carelessness is seldom one of them. The warning comes first. As AdBlue runs low your car tells you, and if it runs out completely, the vehicle drops into limp mode. So the top-up is done in a hurry: on a driveway off Church Street before work, or in the car park at The Crown on the way home. Unfamiliar vehicles come second, too. Rentals, new vehicles and company cars place their fillers in new places, and habit reaches for the cap 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. The same few seconds decide it, in the middle of Bathford or out in Batheaston. ## How to tell the AdBlue filler from the diesel one Look at these first, on a forecourt in Bathford or a drive out in Kingsdown. Seconds, that's all. - Blue and lettering: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap normally does not. Trust the cap, not where it sits. - Check the size: the smaller filler neck is, on plenty of vehicles, the AdBlue one. - Check inside the fuel flap: many motors have a label there showing which fuel goes where. - The handbook says where it lives when the filler is not next to the diesel cap: the boot, or under the bonnet. - Picking up a hire or company car, perhaps at the car park outside Bath Spa? Ask whoever drove it last before you set off, not once the light comes on. ## Topping up AdBlue without it reaching the diesel tank Anywhere around Somerset the light comes on, this is a routine for that day. - Pull in on level, motor off, with time in hand — not hurried on the side of Bathford Hill. - Say "AdBlue" out loud as you unscrew the cap, after finding the AdBlue filler and reading it. Silly, perhaps, but it does the trick. - Both under a single flap? So make sure the lid on the diesel side is still shut before raising the bottle. - Gently does it, through the bottle's own spout, until it is full or the bottle runs out. - Close the cap and check again. Make sure your diesel cap was never opened. Only then start your car. Stop there if you find, at stage two or three, that you've already poured into your diesel side. Don't go on to stage five. ## AdBlue in your diesel tank already, in Bathford? Do not start your motor: that's where the short order of things starts. Do not switch your ignition on; on many diesels that alone runs the fuel pump. AdBlue doesn't mix with diesel — it sinks to the bottom of that tank, where the fuel is drawn from — so don't top up with diesel to dilute it. On a forecourt — Shell, Esso or another — the attendants will normally help push the car clear, if you ask. On your own drive around Bathford? Then your car stays where it is. If the engine has already run, stop as soon as it is safe then switch off. On the M4, under 10 miles from Bathford, that means the next junction. A short hop across Bathford is a smaller job than a run towards Bath, under 3 miles away, so tell us roughly how far it went. ## Bathford: what happens when we get there Our van comes to the car anywhere it stopped — your own driveway, near Bathford Parish Hall, or by Bathford Church School. Those replies settle this work and our price, and so our technicians ask what went in, roughly how much, and whether it has run. The price comes over the phone, ahead of any van leaving. Then that tank is cleared and the system purged thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it doesn't wash out on its own — which is why the flush counts more here than with petrol. After your filter has been flushed — or replaced, where needed — clean diesel goes in, and finally your car is tested. The motor is started next and tested to confirm it runs correctly, all before our technicians leave. With pumps fine on a busy forecourt and quiet enough to use outside a house at night, most jobs in which the engine has not run take about half an hour once our technicians arrive. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Misfuelling cover is included in plenty of insurance policies — so use the wait to look at yours. ## About Bathford Bathford is a small village in Somerset, situated on the banks of the River Avon, with a mix of terraced housing and other residential properties. Bathford sits at an elevation of 57 metres, close to the city of Bath, and is surrounded by other nearby villages such as Batheaston and Bathampton. Bathford is located near the intersection of the River Avon and the Kennet and Avon Canal, making it a notable point in the local landscape. Bathford remains a quiet, predominantly residential community with a population of around 820 people. ## AdBlue drains across Somerset, Bathford included Over BA postcodes, our vans covering Bathford — a village — work the surrounding places too, Northend and Bathampton included. Our van gets to you fastest with a postcode starting BA1 7. The vehicle stays where it is. The drain happens on the spot, whether a drive, a road by Royal British Legion Club, or a lay-by towards Bathford Playing Field. Awkward to pin down, like the back of St Swithun's Church? Close to a border? Checking is better than guessing, and so phone. ## For Bathford motorists, the short version Read the cap before you tip. Petrol in Diesel empties it on the spot, anywhere across Somerset, if AdBlue has gone in your diesel tank anyway — so leave it off then call 0333 366 0103.