--- title: Explained: AdBlue in a Diesel Tank Warminghurst canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/warminghurst-west-sussex/ location: Warminghurst county: West Sussex latitude: 50.940240 longitude: -0.411820 service: AdBlue in a Diesel Tank updated: 2026-10-17 --- # Warminghurst: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? AdBlue already in the diesel tank? In that case set this page aside for now, keep your ignition and motor off, and phone 0333 366 0103. Caught before your engine runs, it is normally a drain and a thorough flush, done where your car is around Warminghurst. Reading in advance? In that case the rest covers why it happens and what to prevent it happening at all. ## Two fillers, two tanks: AdBlue in a diesel car Diesel feeds your motor — but plenty of newer diesels driven round Warminghurst and Ashington hold a second fluid too. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Different tanks, different fillers. Some motors keep the AdBlue filler in your boot or under the bonnet; a lot more place the two together behind one flap. At the pump, your diesel side gets filled constantly. Seldom filled, AdBlue normally goes in from a bottle, poured by a driver who has to stop and think what filler it needs. That gap is where the mistake lives. ## How AdBlue in the diesel tank occurs around Warminghurst Seldom is it carelessness: usually three things line up. On a drive off Park Lane before work, or in the car park at The White Lion Inn on the way home: that's where the hurried top-up happens. What is the reason for the rush? As AdBlue gets low the car tells you, and once it is gone, limp mode kicks in. Unfamiliar vehicles are second, as well. Hire cars, new motors and company vehicles place their fillers differently, and the hand goes for the cap it used on the old one. Third, the bottle fits: a diesel filler or AdBlue filler, it goes in just as readily, and after the tip begins, no part stops it. It's a few seconds, whether out in Thakeham or bang in the centre of Warminghurst. ## Telling the AdBlue filler from the diesel filler Look at these first, at a forecourt in Warminghurst or a drive over in Smock Alley. A few seconds, that's all. - Where it sits can mislead; the cap doesn't. AdBlue ones tend to be blue or carry the word "AdBlue" — diesel caps usually don't. - The size. On plenty of motors the AdBlue filler neck is the smaller of the two. - A label inside your fuel flap frequently shows which fuel goes where, on plenty of motors. Look for it. - Cannot see it beside your diesel inlet? In that case check below the bonnet or in the boot — the owner's manual will say where. - The person who drove the vehicle last. On a hire or company car collected from somewhere like the car park outside Pulborough, ask before you leave, not when the light comes on. ## How to top up without AdBlue in your diesel tank For the day the light comes on — wherever it is around West Sussex — a simple routine to follow. - Turn off after you park — flat ground, engine stopped, and not in a rush by Rectory Lane at the roadside. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - The two behind one flap? Then confirm the cap on your diesel filler is still shut ahead of lifting the bottle. - Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty. - Shut the cap, then check again — confirm the diesel filler remained shut the whole time. Only then, start your car. Find at the second or third stage that AdBlue went into the wrong tank? That's where you stop. Never carry on to step five. ## Warminghurst: already put AdBlue in your diesel tank? Do not start the engine: that's where the short order of things starts. On many diesels the ignition alone runs the fuel pump, and so do not switch the vehicle on. Don't top up with diesel to dilute it: AdBlue doesn't mix with diesel, it sinks to the bottom of that tank, where the fuel is drawn from. If you're at a forecourt, whether it is the BP or the Power, ask the staff to help roll the car away from the petrol pump. Your own driveway around Warminghurst is the place it should stay. Stop as soon as it is safe then switch off, if the engine has already run. Leave the M23 — under 15 miles out of Warminghurst — at the first junction. A short hop across Warminghurst is a smaller job than a run towards Brighton and Hove, under 15 miles away, and so tell us roughly how far it went. ## Our arrival in Warminghurst, and what occurs next Our technicians come to the car wherever it has stopped, whether that is outside Ashington CofE Primary School, close to Church of the Holy Sepulchre or on your own drive. The replies determine this work and the quote, so our engineers ask what went in, roughly how much, and if it has run. Nobody sets off until you've heard the price by phone. The system is then cleaned thoroughly, after your tank is emptied. 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. After the filter is flushed — or renewed, if needed — fresh diesel is added, and finally your vehicle is tested. After that we fire it up and confirm it runs smoothly before we go. Unstarted vehicles mostly mean a half-hour visit from arrival. The kit is fine on a busy filling station, and quiet enough for a driveway after dark. Your insurer will ask for an engineer's report and the VAT invoice, and both are yours at the end. Payment is on the day, with no money upfront. Many insurance policies include misfuelling cover, so it's worth checking yours while we are on the way. ## About Warminghurst and where it is Warminghurst is a small hamlet situated on the banks of a river in West Sussex, with a relatively low elevation of 57 metres. Warminghurst lies near the villages of Thakeham and Abingworth, and is within commuting distance of Brighton and Hove. Warminghurst has a population of around 604 people, predominantly living in detached houses. Warminghurst is also close to Goose Green, a nearby settlement. ## AdBlue drains around Warminghurst, and West Sussex beyond Goose Green and Abingworth are among the towns around Warminghurst, a rural hamlet, that the same teams cover, throughout RH postcodes. Quickest of all: quote a RH20 3 postcode to the van. The vehicle doesn't need to shift. The drain happens right there, whether a driveway, a street near St Mary's, or a lay-by on the way to Mill Copse. Ring and ask rather than guessing if you are close to a boundary, or somewhere hard to explain, like the back of Moat. ## In short, for Warminghurst drivers Before you pour, read the cap. Petrol in Diesel empties it on the spot, anywhere in West Sussex, if AdBlue has gone in your diesel tank anyway — so leave the car off and phone 0333 366 0103.