--- title: AdBlue in a Diesel Tank Painswick: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/painswick-gloucestershire/ location: Painswick county: Gloucestershire latitude: 51.786040 longitude: -2.195010 service: AdBlue in a Diesel Tank updated: 2026-10-11 --- # AdBlue in a Diesel Tank in Painswick: Why It Occurs and How to Avoid It If AdBlue is already in your diesel tank, stop reading for a moment: leave the motor and your ignition off then phone 0333 366 0103. In Painswick, catching it before the motor runs usually means draining and a full flush on the spot. If you're reading before it has happened, the remainder of this page is about why it takes place and how to make sure it doesn't. ## AdBlue in a diesel car: two tanks, two fillers Plenty of newer diesels on the roads around Painswick and Jacks Green carry two liquids, not one. Diesel goes to your engine. Its own tank keeps it, and from there it goes to the exhaust, where spraying cleans the gas. Each tank has its own filler. Under one flap, next to each other: that's the arrangement on a lot of motors. On others, AdBlue's filler sits under the bonnet or in your boot instead. At the petrol pump, the diesel side gets filled constantly. Much less frequently, the AdBlue side is topped up — mostly from a bottle, by someone working out where it goes. The slip lives in that gap. ## Painswick: how AdBlue in your diesel tank happens Three things tend to come together, and carelessness is seldom one of them. First, the warning. Low AdBlue brings a message from your car, and running dry means limp mode — so a hurried top-up, maybe before work off Victoria Square, perhaps outside Falcon Inn on the way home after work. Then your car is strange. A hire car, a new car or a company car puts the fillers where your last one did not, and your hand hits for the cap it would have used on the old one. Third, the bottle goes in: a diesel filler or AdBlue filler, it goes in just as easily, and after the tip starts, no part halts it. It takes seconds, be it out in Longridge or right in the heart of Painswick. ## Telling the AdBlue filler from the diesel filler A few seconds is all these take — so check them before you tip anything, on a driveway in Edge or a forecourt in Painswick. - Blue and marking: an AdBlue cap is frequently blue, or says "AdBlue", where a diesel cap usually doesn't. Go by the cap, not its position. - Plenty of cars give AdBlue the smaller neck of the two. - Lift the flap and look for a label — many vehicles show what goes in which inlet right there. - The handbook. If the filler isn't by your diesel cap, it's in the boot or under the bonnet, and the handbook says which. - Whoever had it before knows. Ask when you collect a hire car or fleet car — at Stroud's car park, say — rather than once the warning comes on. ## How to top up without AdBlue in your diesel tank A routine for the day the light comes on, wherever around Gloucestershire that is. - Park then switch off. Not on a slope, not with the engine running, and not in a rush on the side of Victoria Street. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — and leave it on. - Tip slowly, using the bottle's own spout. Stop when it's full or when the bottle is empty. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start the car. Stop there if you find, at stage two or three, that you've already poured into your diesel side. Skip stage five entirely. ## Painswick: already put AdBlue in the diesel tank? Do not start your engine: that is where the short order of things begins. Leave your ignition off as well, because on many diesels it by itself starts your pump. Thinning it with extra diesel fails, because AdBlue settles to the bottom instead of blending — and that is where your fuel is pulled from. The attendants at Esso, Holbrook Garage or another forecourt will usually lend a hand pushing the vehicle clear if you ask. At home in Painswick? Then your car remains put. Stop as soon as it is safe then switch off, if the engine has already run. Leave the M5 — under 3 miles out of Painswick — at the next exit. About how far did it go? Crossing Painswick is less work than a trip of under 10 miles towards Gloucester, and so say. ## When we get there in Painswick, what takes place? Wherever your car has stopped, be it by The Croft Primary School, near Painswick Community Library or on your own drive, the van travels to it. Those replies determine the work and our quote, and so our engineers ask what got in, roughly how much, and if it has run. You get that price on the phone, before anyone sets off. Your system is then flushed thoroughly, after the tank is emptied. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it doesn't wash out on its own. Once the fuel filter has been flushed — or renewed, if required — clean diesel is added, and finally the car is tested. Before we leave, our technicians fire it up and confirm that it's running correctly. If the motor hasn't run, the majority of jobs take about half an hour once we're there, using pumps that are fine on a busy forecourt and quiet enough to use outside a house after dark. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Many insurance policies include misfuelling cover, and so it is worth checking yours while we're on the way. ## About Painswick and where it is Painswick is a small town in Gloucestershire, situated on the banks of a river at an elevation of around 150 metres. Painswick lies near the cities of Gloucester and Cheltenham, and is surrounded by nearby places such as Longridge and Cockshoot. Painswick has a population of approximately 2143 people, predominantly living in detached housing. Painswick is located about 90 miles west of London, making it a relatively accessible town in the South West region. ## AdBlue drains across Gloucestershire, Painswick included Over GL postcodes, our teams that cover Painswick — a riverside town — work the nearby locations too, Paradise and Cockshoot included. Quickest of all: give a GL6 6 postcode to our van. There's no need to move the vehicle. Our engineers drain it where it is — a side street close to St Mary's, a lay-by on the way to The Pound, a drive. Ring and ask instead of guessing if you're near a boundary, or somewhere hard to describe, like the back of Chapel of Our Lady and Saint Therese. ## The short version for Painswick drivers Before you pour, read the cap. Petrol in Diesel drains it where it stands, anywhere around Gloucestershire, if AdBlue has gone in the diesel tank anyway — so leave the vehicle off then phone 0333 366 0103.