--- title: AdBlue in a Diesel Tank Bletchingley: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/bletchingley-surrey/ location: Bletchingley county: Surrey latitude: 51.240640 longitude: -0.099310 service: AdBlue in a Diesel Tank updated: 2026-10-08 --- # Why It Happens and How to Prevent It: AdBlue in a Diesel Tank in Bletchingley Keep your motor and ignition off then call 0333 366 0103 first — reading can wait if AdBlue is already in your diesel tank. Caught before your motor runs, it's usually a drain and a thorough flush, done where your car is in Bletchingley. If you're reading before it has happened, the remainder of this page is about why it happens and how to make sure it doesn't. ## Why does AdBlue in a diesel car need its own filler? Not one fluid but two: that is how plenty of newer diesels around Bletchingley and Warwick Wold run, with diesel for the motor. Kept in a tank of its own, AdBlue is sprayed into your exhaust stream to clean it. Each tank has its own filler. Under one flap, next to each other: that's the arrangement on many motors. Elsewhere, AdBlue's filler sits beneath the bonnet or in the boot instead. At the pump, your diesel side is topped up constantly. Seldom topped up, AdBlue usually goes in from a bottle, poured by a driver who has to stop and think which filler it needs. It's in that gap that the slip happens. ## How does AdBlue in your diesel tank take place around Bletchingley? Carelessness seldom explains it. Instead is three things lining up together. On a drive off High Street before work, or in the car park at The White Harte Hotel on the way home: that's where the rushed top-up happens. What is the reason for the rush? As AdBlue gets low the vehicle warns you, and if it's empty, limp mode follows. Then the vehicle is new. A hire car, a new car or a company car puts the fillers where your last one didn't, and the hand gets to for the cap it would have used on the old one. Nothing halts the pour after it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. It's a few seconds, whether out in White Post or bang in the centre of Bletchingley. ## How to tell the AdBlue filler from the diesel one Be it a Bletchingley forecourt or a drive over in Godstone, take a couple of seconds over these before anything is poured in. - Check the cap rather than going by position: AdBlue caps are regularly blue or marked "AdBlue", and diesel ones usually are not. - On plenty of motors, the size gives it away: AdBlue gets the smaller filler neck. - Look inside your fuel flap: plenty of motors have a label there saying which fuel goes where. - The handbook. If your filler is not by the diesel cap, it's in your boot or under the bonnet, and the handbook says which. - Check with 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 at Nutfield. ## AdBlue top-ups that never reach the diesel tank The day the light goes on, anywhere around Surrey, use this routine. - Stop on level, engine off, with time in hand — not hurried on the side of Outwood Lane. - Say "AdBlue" out loud as you unscrew the cap, once finding the AdBlue filler and read it. Daft, yes, yet it does the trick. - Both behind one flap? Then make sure the lid on your diesel filler is still shut before raising the bottle. - Finish once that tank fills or the bottle runs dry; before that, pour gently using its built-in spout. - Shut the cap, then check again — making sure your diesel filler stayed shut throughout. After that, start the vehicle. Find at stage two or three that it's already gone into your diesel side? Then stop just there. Never go on to step five. ## Already put AdBlue in the diesel tank in Bletchingley? Short list, then. First: your motor remains unstarted. The fuel pump starts on many diesels as soon as your ignition goes on — and so leave it off. Filling up with diesel will not thin it: instead, AdBlue sinks to the bottom of your tank, just where the fuel is drawn from. The staff at Shell, Esso or another forecourt will normally help pushing the vehicle clear when asked. Your own driveway around Bletchingley is the place it stays. Stop as soon as it is safe and switch off, if the motor has already run. On the M23, under a mile from Bletchingley, that means the next junction. Tell us about how far it went: a run towards Westminster, under 25 miles away, is a bigger job than a short hop across Bletchingley. ## What happens when our technicians get there around Bletchingley Outside Bletchingley Village Primary School, near St Mary the Virgin or on your own driveway: wherever your car has stopped, our engineers come to it. What liquid was put in, the amount, and if it ran: our engineers ask since those answers decide both work and price. No one heads out before you have heard the price by phone. Then that tank is emptied and the fuel system flushed thoroughly. With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own. A test comes last: before that, fresh diesel is added, and your filter is flushed or replaced if necessary. We don't leave until it has been started and is running properly. Using pumps fine on a busy forecourt and quiet enough for use outside a house at night, most jobs where your motor hasn't run take about half an hour once we are there. Paying happens on the day, not upfront, and you receive the documents your insurer asks for: an engineer's report and a VAT invoice. Misfuelling cover is included in plenty of insurance policies — so make use of the wait to look at yours. ## About Bletchingley itself Bletchingley is a small village in Surrey, situated approximately 18.5 miles south of London and near the North Downs. Bletchingley sits at an elevation of around 141 metres, with semi-detached housing being the predominant type of accommodation. Bletchingley is close to nearby places such as White Post, Brewer Street, and Nutfield, and has a population of around 865 residents. ## AdBlue drains around Bletchingley, and Surrey beyond Bletchingley is a rural village, and the teams that cover it also work the towns around it, Brewer Street and Nutfield among them, across the RH postcode area. Fastest of all: quote a RH1 4 postcode for our van. Your car remains where it is. A drive, a lay-by on the way to Stychens Lane Open Space, a side street near Bletchingley Castle: we drain the car where it sits. Ring and ask instead of guessing if you're close to a boundary, or somewhere hard to describe, like the back of Roman Villa. ## Bletchingley people: the short version Always, the cap; after that, the tip. AdBlue in the diesel tank regardless? Keep it switched off and phone 0333 366 0103; Petrol in Diesel drains it on the spot, across Surrey.