--- title: Explained: AdBlue in a Diesel Tank Rush Green canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/rush-green-essex/ location: Rush Green county: Essex latitude: 51.793600 longitude: 1.129900 service: AdBlue in a Diesel Tank updated: 2026-10-28 --- # Preventing AdBlue in a Diesel Tank in Rush Green: Why It Occurs Leave your engine and ignition off and 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 the vehicle is around Rush Green. If you are reading before it has happened, the rest of this page is about why it takes place and how to make sure it doesn't. ## AdBlue in a diesel motor: two tanks, two fillers Not one fluid but two: that's what plenty of newer diesels near Rush Green and Great Clacton carry, with diesel feeding the motor. Your exhaust, not the engine, is where AdBlue ends up: sprayed into the gas to fresh them, from a separate tank. Each tank has its own filler. Many of cars share a single flap for both, while others put the AdBlue filler to your boot or under the bonnet. Filling your diesel side at the petrol pump happens constantly. Seldom filled, AdBlue usually comes out of a bottle, poured by someone who must stop and think which filler to use. The mistake lives in that gap. ## How does AdBlue in the diesel tank happen around Rush Green? Seldom is it carelessness: normally three things line up. First, the warning. Low AdBlue triggers a message from your car, and letting it run dry means limp mode — so a rushed top-up, maybe before work off Stanley Road, perhaps outside Wick Lodge on the way home after work. Next, your hand reaches for the cap it would have used on the old vehicle — since a hire car, a new vehicle or a company car places the fillers where your last one did not. A spout-topped bottle finds no resistance at a diesel filler any more than at an AdBlue one. So the pour, once started, keeps on. The same few seconds decide it, in the middle of Rush Green or out in Bockings Elm. ## Telling the AdBlue filler from your diesel filler Before you pour anything, whether on a driveway in Burrsville Park or a forecourt in Rush Green, check these. They take a couple of seconds. - Blue and lettering: an AdBlue cap is frequently blue, or says "AdBlue", where a diesel cap usually does not. Go by the cap, not where it sits. - On plenty of cars, the size gives it away: AdBlue has the smaller filler neck. - Look inside your fuel flap: many cars carry a label there showing which fuel goes where. - The handbook shows which it lives if the filler is not next to your diesel cap: the boot, or under the bonnet. - Collecting a hire or company car, perhaps at the car park at Clacton-On-Sea? Ask whoever drove the car last before leaving, not when the light goes on. ## Keeping AdBlue out of the diesel tank when you top up The day the light goes on, anywhere around Essex, follow this routine. - Stop somewhere level, motor off, with time to spare — not hurried on the side of Chittock Close. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it works. - The diesel cap stays on. When both share a flap, confirm it is closed before lifting the bottle. - Slowly does it, through the bottle's own spout, till it is full or the bottle is empty. - Before you start the car, shut the cap and look a second time that the diesel cap was never came off. Discover during the second or third stage that the bottle went into the wrong filler? That is where you stop. Never go on to step five. ## AdBlue in the diesel tank already, around Rush Green? What follows is a short order of things, starting with not starting the engine. Keep your ignition off too, since on many diesels switching it on by itself runs your fuel pump. Diluting it with more diesel fails, because AdBlue settles to the bottom rather than mixing — and that is where your fuel is pulled from. The staff at Texaco, Gulf or another forecourt will normally help pushing the car away if asked. If you are on your own drive in Rush Green, leave the car where it stands. Already run? Stop once it's safe, then switch off. The next junction is where to come off when you're on the M2, under 50 miles from Rush Green. About how far did it go? Hopping across Rush Green is smaller a job than a trip of under 15 miles to Colchester, and so say. ## What occurs when we arrive around Rush Green We come to the car wherever it has stopped, whether that is outside Ravens Academy, near FC Clacton or on your own drive. Our technicians ask what went in, roughly how much, and if it's run, because the answers settle this work and our quote. The price is given over the phone, ahead of any van leaving. Then that tank is drained and the system flushed thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own — which is why that matters more here than with petrol. Filter cleaned or, if it must be, replaced; fresh diesel in; then a check of the vehicle. Before we leave, our engineers start the engine and check that it's running smoothly. Unrun vehicles usually need a half-hour job from arrival. The equipment is safe on a live forecourt, and hushed enough for a residential street after dark. Your insurer usually wants an engineer's report and the VAT invoice, and both are yours once this job is done. Payment is on the day, with no money upfront. Many insurance policies include misfuelling cover, and so it is worth checking yours whilst we're on the way. ## About Rush Green, briefly Rush Green is a suburban area in Essex, situated near the coast and approximately 57 miles from London. Rush Green has a population of around 5478 people and is characterised by semi-detached housing. Rush Green is close to several nearby places, including Bockings Elm, Jaywick, and Clacton-on-Sea, and is about 12 miles from the city of Colchester. Rush Green sits at a relatively low elevation of 16 metres above sea level. ## Rush Green and Essex: AdBlue drains across the area Rush Green is a residential suburb, and the teams that cover it also work the places around it, Jaywick and Clacton-on-Sea among them, across the CO postcode area. The van reaches you fastest with a postcode starting CO16 7. The car does not need to move. A drive, a lay-by on the way to Millers Barn Golf Park, a side street close to Rush Green Methodist Church: our engineers drain the car where it sits. Ring and ask instead of guessing if you are close to a boundary, or somewhere hard to explain, like the back of West Clacton Library. ## For Rush Green motorists, the short version Pour nothing till you have read the cap. AdBlue in your diesel tank regardless? Leave the vehicle off and ring 0333 366 0103; Petrol in Diesel empties it on the spot, throughout Essex.