--- title: AdBlue in a Diesel Tank Barrow? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/barrow-lancashire/ location: Barrow county: Lancashire latitude: 53.837280 longitude: -2.402460 service: AdBlue in a Diesel Tank updated: 2026-10-24 --- # Preventing AdBlue in a Diesel Tank in Barrow: Why It Occurs Pause here for a moment if your diesel tank already holds AdBlue in it: ignition off, motor off, then ring 0333 366 0103. Around Barrow, finding it before the motor runs usually means a drain and a thorough 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 does not. ## AdBlue in a diesel car: two tanks, two fillers No single fluid but two: that's what many newer diesels around Barrow and Billington carry, with diesel feeding the engine. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Every tank has one filler of its own. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet. The diesel side is filled at the pump all the time. Seldom topped up, AdBlue normally comes from a bottle, poured by a driver who must stop and think what cap it needs. It's in that gap that the error happens. ## Barrow: how AdBlue in the diesel tank happens It is hardly ever carelessness. Three things tend to line up. On a driveway off Dogwood Lane before work, or in the car park at Freemasons heading home: that's where the rushed top-up happens. Why the rush? As AdBlue runs low your car warns you, and if it's gone, limp mode kicks in. Then your car is new. 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 spout fits: a diesel filler or AdBlue filler, it goes in as readily, and once the tip starts, nothing halts it. Wiswell or the middle of Barrow: it takes the same few seconds in both. ## How to tell the AdBlue filler from the diesel one Before you pour anything, whether on a driveway in Great Mitton or a forecourt in Barrow, check these. They take a couple of seconds. - Position misleads; the cap does not. AdBlue caps are often blue or bear the word "AdBlue" — diesel ones normally don't. - Many motors give AdBlue the smaller filler of the two. - The flap. Look inside your fuel flap for a label. Many vehicles say there which fuel goes where. - The handbook. If your filler is not by your diesel cap, it's in the 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 — when you collect a hire or company car from somewhere like the car park at Whalley. ## Keeping AdBlue out of your diesel tank when you top up On the day the light appears — wherever you are around Lancashire — a routine to follow. - Pull in somewhere level, motor off, with time to spare — not hurried on the side of Aspen Crescent. - Say "AdBlue" out loud as you unscrew the cap, after you find the AdBlue filler and read it. Daft, perhaps, yet it does the trick. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the car on. - Finish once your tank fills or the bottle is empty; until then, tip slowly through the built-in spout. - Close the cap and check once more. Make sure the diesel cap was never opened. Only then start the vehicle. Spot at step two or three that it's already gone into the diesel side? So stop right there. Never go on to step five. ## AdBlue in your diesel tank already, in Barrow? Then the order of things is short. Do not start the motor. Do not switch your ignition on; on plenty of diesels that alone runs the fuel pump. Filling up with diesel will not dilute it: instead, AdBlue sinks to the bottom of that tank, right where the fuel is drawn from. Ask the attendants to help roll the vehicle clear of the petrol pump if you are on a forecourt — the Asda, the Shell or anywhere else. Leave it where it is if you're on your own drive in Barrow. Where your motor has run by now, pull over somewhere safe and switch the car off. The next exit is the place to come off if you are on the M65, under 5 miles from Barrow. Roughly how far did it go? Crossing Barrow is less work than a trip of under 15 miles towards Preston, so say. ## What occurs when our technicians arrive in Barrow By Barrow URC Primary School, near Calderstones Bell or on your own drive: wherever your car has stopped, we come to it. Both the work and our quote rest on three answers — which fluid, what amount, and if it has run — so our technicians ask. That price is given on the call, before any van leaves. Then your tank is drained and the fuel system purged thoroughly. Much more than with petrol, it matters with AdBlue: the crystals build up, some metals corrode, and none of it washes out unaided, however long it is left. The filter cleaned or, where needed, replaced; fresh diesel in; then a check of the car. Before we go, our technicians fire it up and confirm that it is running properly. Unstarted vehicles mostly need a half-hour job after the moment we arrive. The kit is fine on a busy forecourt, and quiet enough for a residential street late at night. Nothing upfront; you settle up on the day. Afterwards, the VAT invoice and the report from the engineer are handed to you for your insurer. Wrong-fuel cover is included in plenty of insurance policies — so make use of the wait to look at yours. ## About Barrow itself Barrow is a village in Lancashire, situated on the riverside at an elevation of 78 metres, with detached housing being the predominant type of accommodation. Barrow lies near the cities of Preston and Blackburn, and is close to the villages of Wiswell, Nethertown, and Whalley. Barrow has a population of approximately 1239 residents, and is located 187.1 miles northwest of London. Barrow is a rural community with a strong sense of identity, set in the rolling countryside of the North West region. ## Barrow and Lancashire: AdBlue drains across the area Over BB postcodes, the vans that cover Barrow — a village — work the surrounding places too, Whalley and Nethertown included. Quickest of all: give a BB7 9 postcode for our van. Your car remains put. Our engineers drain it where it is — a side street near Forge Corner, a lay-by on the way to Clitheroe Golf Course, a driveway. Ring and ask instead of assuming if you are near a border, or somewhere hard to explain, like the back of Whalley Methodist Church. ## In short, for Barrow motorists Always, the cap; after that, the tip. AdBlue in your diesel tank regardless? Keep the car switched off then ring 0333 366 0103; Petrol in Diesel empties it where it stands, across Lancashire.