--- title: AdBlue in a Diesel Tank East Worthing? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/east-worthing-west-sussex/ location: East Worthing county: West Sussex latitude: 50.817090 longitude: -0.351020 service: AdBlue in a Diesel Tank updated: 2026-10-07 --- # East Worthing: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? Leave the motor and ignition off then phone 0333 366 0103 now — reading can wait if AdBlue is already in your diesel tank. In East Worthing, catching it before your engine runs usually means draining and a full flush on the spot. If you're reading before it has happened, the remainder of this page is about why it occurs and how to make sure it does not. ## Why does AdBlue in a diesel car need its own filler? Plenty of current diesels on the roads round East Worthing and Upper Cokeham carry two liquids, not one. Diesel goes to the engine. AdBlue's own tank keeps it, and from there it goes to your exhaust, where a spray treats the fumes. Each tank has one filler of its own. On a lot of vehicles the two sit side by side under the same flap; on others the AdBlue filler is in your boot or under the bonnet. At the petrol pump, the diesel side is topped up all the time. Far less regularly, the AdBlue side is filled — normally from a bottle, by a person thinking about where it goes. That gap is where the error lives. ## How AdBlue in your diesel tank happens around East Worthing It's hardly ever carelessness. Three things tend to line up. On a drive off Chatham Road before work, or in the car park at The Smugglers Return on the way home: that is where the hurried top-up happens. Why the rush? As AdBlue gets low the car warns you, and once it's empty, limp mode kicks in. The old car's cap is where your hand reaches — but a rental car, a new car or a company car keeps the fillers elsewhere. That is the second factor: a strange vehicle. Nothing halts the tip after it has started, since a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. Worthing or the middle of East Worthing: it takes the same few seconds in both. ## How to tell the AdBlue filler from the diesel one Check these before pouring, at a forecourt around East Worthing or a drive over in Sompting. Seconds, no more. - Where it sits can mislead; the cap doesn't. AdBlue caps tend to be blue or carry the word "AdBlue" — diesel ones usually don't. - On many cars, the size tells: AdBlue has the smaller filler neck. - Lift the filler flap and look for a label — many vehicles show what belongs in each filler just there. - The handbook shows which it is if your filler isn't next to your diesel cap: your boot, or under the bonnet. - Whoever had it before knows. Ask when you collect a hire car or fleet car — from the nearest station's car park, say — not once the light comes on. ## Topping up AdBlue without it reaching the diesel tank Wherever around West Sussex the light comes on, this is a routine for that day. - Switch off after you park — level ground, motor off, and never rushed beside Brougham Road on the verge. - Find the AdBlue filler, check the cap, and say the word "AdBlue" aloud as unscrewing it. It seems silly. It does the trick. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — and leave the vehicle on. - Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty. - Close the cap and check once more. Make sure your diesel cap was never opened. Only then start your car. If at step two or three you find you have already poured into your diesel side, stop there. Do not go on to step five. ## Put AdBlue in the diesel tank around East Worthing already? Short order, then. First: your motor stays off. Leave the ignition off too, because on many diesels it by itself starts the fuel pump. Do not top up with diesel to thin it: AdBlue does not mix with diesel, it sinks to the bottom of your tank, where your fuel is drawn from. The staff at BP, Shell or any forecourt will usually help to push the vehicle away when you ask. Leave it where it is if you are on your own drive around East Worthing. Already run? Pull over once it is sensible, then switch off. The next junction means where to come off if you are on the M23, under 25 miles from East Worthing. Tell us roughly how far it went: a run towards Brighton and Hove, under 10 miles away, is a bigger job than a short hop across East Worthing. ## East Worthing: what happens when our technicians arrive We come to your car wherever it has stopped, whether that is outside Homefield Primary School and SSC, close to East Worthing Baptist Church or on your own driveway. What fluid went in, the amount, and if it ran: we ask since those replies set the work and quote. On the phone call itself, you hear the quote — ahead of dispatch. Next: a drain, then a thorough flush of the entire system. With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own. After your filter is cleaned — or replaced, where needed — fresh diesel goes in, and finally the car is tested. After that we fire it up and check it runs properly before leaving. Most jobs are done in about half an hour after our engineers arrive, as long as your motor hasn't run — and the pumps our engineers use are safe on a busy forecourt and quiet at night outside a house. Paying is on the day, not upfront, and you receive the documents your insurer asks for: an engineer report and a VAT invoice. It's worth looking at your insurance while we travel to you: misfuelling cover comes with many policies. ## About East Worthing itself East Worthing is a coastal suburban area in West Sussex, situated near the town of Worthing and approximately 9 miles west of Brighton and Hove. East Worthing lies at a low elevation of around 6 metres above sea level, with its terraced housing stock reflecting the area's historical development. East Worthing forms part of the wider Worthing urban area, with nearby neighbourhoods including Lower Cokeham and Broadwater. ## AdBlue drains across West Sussex, East Worthing included East Worthing is a residential suburb, and our teams that cover it also work the towns around it, Lower Cokeham and Broadwater among them, across the BN postcode area. A postcode starting BN11 2 gets the van to you fastest. The car does not need to shift. Wherever it sits — near East Worthing Community Centre, on a lay-by en route to Windsor Lawns, at home — that's where it gets emptied. Ring and ask rather than assuming if you're close to a boundary, or somewhere hard to explain, like the back of St George. ## East Worthing motorists: the short version First, the cap; then, the tip. Petrol in Diesel empties it on the spot, anywhere in West Sussex, if AdBlue has gone in the diesel tank regardless — and so leave the car off then call 0333 366 0103.