--- title: Explained: AdBlue in a Diesel Tank Ashurst canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/ashurst-lancashire/ location: Ashurst county: Lancashire latitude: 53.563700 longitude: -2.775240 service: AdBlue in a Diesel Tank updated: 2026-10-10 --- # Why It Happens and How to Prevent It: AdBlue in a Diesel Tank in Ashurst Keep your motor and ignition off and call 0333 366 0103 now — the rest can wait if AdBlue is already in the diesel tank. Normally, if the engine has not run, it is drained and fully purged where the car sits in Ashurst. The rest of this page covers why it happens and how to make sure it does not — useful if you are reading ahead of time. ## Two fillers, two tanks: AdBlue in a diesel car Diesel feeds the engine — but plenty of modern diesels driven round Ashurst and Town Centre carry a second liquid too. Its own tank holds it, and from there it is sent to your exhaust, where a spray cleans the gas. There's a filler for each tank. Plenty of vehicles have a single flap for the two, whereas some move the AdBlue filler to the boot or under the bonnet. At the pump, your diesel side gets filled constantly. Rarely filled, AdBlue normally goes in from a bottle, poured by someone who must stop and think what cap it needs. Mistakes happen in that gap between them. ## AdBlue in the diesel tank around Ashurst: how it happens It is seldom carelessness. Three things tend to line up. On a drive off Ashurst Road before work, or in the car park outside The Miners Peg heading home: that is where the rushed top-up takes place. Why the rush? As AdBlue gets low the car tells you, and once it's gone, limp mode follows. Unfamiliar cars are next, as well. Hire cars, new cars and company motors place their fillers differently, and the hand reaches for the cap used on the old one. A spout-topped bottle meets no obstacle at a diesel filler any more than at an AdBlue one. So the tip, once started, keeps on. It takes a few seconds, whether out in Whalleys or bang in the heart of Ashurst. ## How to tell the AdBlue filler from the diesel one Whether a Ashurst forecourt or a driveway over in Skelmersdale, spend a few seconds over these before anything goes in. - The cap. The AdBlue cap is often blue, or marked "AdBlue". The diesel cap usually isn't. Read it instead of going by where it sits. - Check the size: the smaller filler neck is, on many cars, the AdBlue one. - Look inside the fuel flap: plenty of cars carry a label there saying which fuel goes where. - Cannot find it beside the diesel inlet? In that case look beneath the bonnet or inside your boot — the handbook says which. - Ask the person who drove it last — before you leave, not when the light comes on — when you pick up a hire or company car from somewhere like the car park at Parbold. ## AdBlue top-ups that never reach the diesel tank On the day the warning comes on — anywhere you are around Lancashire — a routine to use. - Stop somewhere level, engine off, with time to spare — not hurried on the side of Whalleys Road. - Silly as it sounds, saying "AdBlue" out loud while you unscrew the cap does the trick — after you've located your filler and read the cap. - The two behind one flap? Then make sure the cap on your diesel filler stays shut ahead of lifting the bottle. - Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty. - Before you start your car, shut the cap and look again that the diesel cap never came off. Stop there if you find, at step two or three, that you have already poured into the diesel side. Leave out stage five entirely. ## Put AdBlue in the diesel tank in Ashurst already? Then the order of things is short. Do not start your engine. Do not switch the ignition on; on plenty of diesels that alone runs the fuel pump. Do not top up with diesel to dilute it: AdBlue doesn't mix with diesel, it sinks to the bottom of your tank, where the fuel is sucked from. If you are on a forecourt, whether it is the Asda or the Shell, ask the staff to help push the car away from the pump. Leave it where it is if you are on your own drive in Ashurst. Stop as soon as it is safe then switch off, if the motor has already run. The next junction is where to leave when you're on the M58, under 3 miles from Ashurst. Distance counts — a quick hop across Ashurst is a smaller job than heading under 15 miles towards Liverpool — so say roughly how far it went. ## Our arrival in Ashurst, and what happens next Anywhere your car came to rest, whether by St James' Catholic Primary School, Skelmersdale, beside Ashurst Centre or on your own drive, our van travels to it. The replies determine this work and the quote, so our engineers ask what went in, about how much, and whether it's run. No one heads out until you have had our price over the phone. Then your tank is emptied and your system rinsed thoroughly. Much more than with petrol, it counts here: crystals build up, certain metals corrode, and nothing clears away on its own, however long it sits. Your filter is flushed, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested. The motor is fired up next and tested to make sure it runs smoothly, all before our technicians leave. Unrun cars mostly need a half-hour job from the moment we arrive. The equipment is safe on a busy forecourt, and quiet enough for a driveway after dark. The insurer usually wants an engineer's report and the VAT invoice, and both are yours at the end. Payment is on the day, with no deposit. Before we get there, take a look at your policy; plenty carry cover for misfuelling. ## About Ashurst Ashurst is a suburban area in Lancashire, situated inland at an elevation of 78 metres, approximately 13.5 miles from Liverpool. Ashurst forms part of the larger urban landscape of the North West, with nearby places including Whalleys, Dalton, and Fosters Green. Ashurst has a population of around 5611 people, predominantly living in semi-detached housing. Ashurst is located about 180.4 miles from London, making it a relatively distant suburb from the capital city. ## AdBlue drains about Ashurst, and Lancashire beyond Being a residential suburb, Ashurst shares its vans nearby places — Dalton, Fosters Green — right across WN postcodes and the surrounding area around them. Give a postcode that starts WN8 6, and our van gets there fastest. No need to move the vehicle. Draining takes place right there, be it a driveway, a street near St Mary Queen of Apostles Church, or a lay-by towards Skelmersdale Henge Park. Ring and ask instead of guessing if you're near a boundary, or somewhere hard to explain, like the back of Skelmersdale Henge. ## For Ashurst drivers, the short version Before you tip, read the cap. Petrol in Diesel empties it on the spot, anywhere in Lancashire, if AdBlue has gone in your diesel tank regardless — so leave the vehicle off and ring 0333 366 0103.