--- title: Explained: AdBlue in a Diesel Tank Kempsford canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/kempsford-gloucestershire/ location: Kempsford county: Gloucestershire latitude: 51.670760 longitude: -1.772710 service: AdBlue in a Diesel Tank updated: 2026-10-22 --- # AdBlue in a Diesel Tank in Kempsford: Why It Occurs and How to Stop It Pause reading for a moment if your diesel tank already has AdBlue in it: ignition off, engine off, then call 0333 366 0103. Normally, if your motor hasn't turned, it's drained and fully flushed where your car sits in Kempsford. Here in advance? Then the rest explains how it comes about and how to prevent it happening at all. ## AdBlue in a diesel car: two tanks, two fillers Diesel feeds your engine — but plenty of current diesels driven around Kempsford and Hannington Wick carry another liquid as well. Kept in a tank of its own, AdBlue is fed into your exhaust stream and cleans it. Each tank comes with a filler of its own. Under one flap, next to each other: that is the arrangement on many motors. Elsewhere, AdBlue's filler sits beneath the bonnet or in your boot instead. At the pump, your diesel side gets filled constantly. The AdBlue side is fuelled far less commonly, usually from a bottle, and normally by somebody who has to stop and think where it goes. The mistake grows in that gap between them. ## AdBlue in your diesel tank in Kempsford: how it occurs It is seldom carelessness. Three things tend to line up. On a driveway off High Street before work, or in the car park outside The George Inn heading home: that's where the hurried top-up happens. Why the rush? As AdBlue runs low the car warns you, and once it's empty, limp mode kicks in. New-to-you cars are next, too. Rentals, new cars and company motors put their fillers differently, and the hand reaches for the cap it used on the old one. No part stops 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. Whether it takes place in Dunfield or the middle of Kempsford, it's the same few seconds. ## Which filler is for AdBlue, and which for diesel? A couple of seconds is all the checks take — so check them before you tip anything, on a driveway in Marston Meysey or a forecourt in Kempsford. - The cap. The AdBlue cap is regularly blue, or marked "AdBlue". The diesel cap usually isn't. Read it rather than going by position. - Many vehicles give AdBlue the smaller neck of the two. - Look inside the fuel flap: many cars carry a label there saying which fuel goes where. - In your boot or under the bonnet: that's where the filler is if it's not by the diesel cap, and the handbook says which. - 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 outside Swindon. ## How to top up without AdBlue in your diesel tank For the day the light comes on — anywhere it is in Gloucestershire — a routine to use. - Not in a rush on the side of Chapel Close, not on a slope, not with the engine running: park then switch off first. - Silly as it sounds, saying "AdBlue" aloud as you unscrew the cap works — after you've found your filler and read the cap. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the vehicle on. - Slowly does it, through the bottle's own spout, until it's full or the bottle runs out. - Before you start the vehicle, shut the cap and check again that the diesel cap never opened off. Stop there if you find, at stage two or three, that you have already poured into the diesel side. Step five is off limits. ## Already put AdBlue in your diesel tank in Kempsford? The short order of things, starting with no starting the motor. Leave your ignition off too, since on many diesels switching it on by itself starts your pump. Topping up with diesel will not dilute it: instead, AdBlue sinks to the base of the tank, right where the fuel is taken from. If you are at a forecourt, whether it's the Shell or the BP, ask the staff to help push the car away from the pump. Your own drive in Kempsford is the place it stays. Already started? Pull over when it is sensible, then switch off. The next exit means the place to leave when you are on the M4, under 10 miles from Kempsford. Tell us about how far it went: a run towards Oxford, under 25 miles away, is a bigger job than a short hop across Kempsford. ## What takes place when our technicians turn up around Kempsford Our engineers come to the vehicle wherever it has stopped, whether that is outside Kempsford Church of England Primary School, near St Mary's or on your own driveway. Those replies determine this work and the price, and so we ask what was put in, about how much, and whether it has run. Nobody sets off before you have had the price by phone. Your system is then cleaned thoroughly, once that tank is emptied. More than with petrol, it matters here: the crystals form, some metals are attacked, and none of that clears out on its own, however long it is left. After your filter has been cleaned — or renewed, if needed — clean diesel goes in, and then your vehicle is tested. After that we fire it up and make sure it runs correctly before we go. With pumps fine on a working forecourt and quiet enough for use outside a house at night, most jobs in which your engine hasn't run take roughly half an hour once we arrive. No money upfront; you settle up on the day. At the end, the VAT invoice and the report from the engineer go to you for the insurer. Wrong-fuel cover is part of many insurance policies — and so make use of the wait to look at yours. ## About Kempsford, briefly Kempsford is a village in Gloucestershire, situated on the banks of the River Thames at an elevation of 81 metres. Kempsford has a mix of old and new housing, with detached homes being the predominant type, and is surrounded by nearby places such as Dunfield, Castle Eaton, and Whelford. Kempsford is located near the city of Oxford, approximately 22.8 miles away, and is about 71.5 miles from London. Kempsford has a population of around 794 people and is set in a scenic lakeside location. ## Kempsford and Gloucestershire: AdBlue drains across the area As a village, Kempsford shares its vans nearby places — Castle Eaton, Whelford — all the way through GL postcodes and the surrounding area around them. A postcode starting GL7 4 gets the van to you fastest. The car remains where it is. We drain it where it is — a side street near St Mary the Virgin, a lay-by on the way to Ash Copse, a drive. Guessing won't help at the back of Captain David Hawkens Memorial, close to a border, or anywhere hard to describe; phone and check. ## For Kempsford motorists, the short version Pour nothing until you have read the cap. If AdBlue has gone in the diesel tank all the same, leave the vehicle off and call 0333 366 0103. Petrol in Diesel drains it where it stands, anywhere around Gloucestershire.