--- title: AdBlue in a Diesel Tank Lillington? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/lillington-warwickshire/ location: Lillington county: Warwickshire latitude: 52.304200 longitude: -1.520560 service: AdBlue in a Diesel Tank updated: 2026-10-17 --- # Lillington: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? Pause here a minute if your diesel tank already holds AdBlue in it: ignition off, engine off, then ring 0333 366 0103. In Lillington, finding it before the motor turns usually leaves draining and a full flush where it stands. 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, and its separate tank Diesel goes to your motor — yet plenty of current diesels seen round Lillington and Royal Leamington Spa carry another fluid too. Your exhaust, not your motor, is where AdBlue goes: sprayed into the gas to fresh it, from its own tank. There's a filler on each tank. Under one flap, side by side: that's the arrangement on many motors. On others, AdBlue's filler sits under the bonnet or in the boot instead. The diesel side is fuelled at the pump all the time. The AdBlue side is fuelled far less regularly, usually from a bottle, and normally by someone who has to stop and think where it goes. Mistakes happen in the gap between the two. ## How AdBlue in your diesel tank takes place around Lillington Three things tend to come together, and carelessness is seldom one of them. The warning comes first. As AdBlue runs low your car tells you, and if it runs out completely, your vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Church Gardens before work, or in the car park at Rugby Tavern on the way home. Then the vehicle is unfamiliar. A hire car, a new motor or a company car puts the fillers where your last one didn't, and the hand hits for the cap it would have used on the old one. A spout-topped bottle meets no resistance at a diesel filler no more than at an AdBlue one. So the pour, after started, carries on. Campion Hills or the heart of Lillington: it is the same few seconds either way. ## The AdBlue filler and your diesel filler: telling them apart Check these first, on a forecourt around Lillington or a driveway out in Milverton. A few seconds, no more. - The cap. The AdBlue cap is often blue, or marked "AdBlue". The diesel cap normally is not. Read it instead of going by position. - On many cars, size gives it away: AdBlue has the smaller filler neck. - The flap. Look inside the fuel flap for a label. Many cars say there which fuel goes where. - The handbook. If the filler isn't by the diesel cap, it is in your 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 — if you collect a hire or company car from somewhere like the car park outside Leamington Spa. ## Topping up AdBlue without it reaching the diesel tank Wherever across Warwickshire the light comes on, here is a routine for the day. - Pull in somewhere level, engine off, with time in hand — not rushing on the side of The Holt. - Daft as it sounds, saying "AdBlue" out loud as you unscrew the cap does the trick — after you've found the filler and read it. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — then leave it on. - Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Before you start your car, shut the cap and look again that your diesel cap was never came off. Stop there if you find, at step two or three, that you've already poured into your diesel side. Step five is out. ## Put AdBlue in the diesel tank around Lillington already? Do not start your engine: that is how the short order of things starts. The fuel pump runs on many diesels as soon as the ignition is switched on — so leave it off. Topping up with diesel won't dilute it: rather than mixing, AdBlue drops to the bottom of the tank, right where the fuel is drawn from. The staff at Shell, Esso or another forecourt will normally lend a hand pushing your car away if you ask. If you are on your own driveway around Lillington, leave it where it stands. Already started? Stop once it is safe, then switch off. Lillington lies under 5 miles from the M40; on it, use the first junction. A short hop across Lillington is a smaller job than a run towards Coventry, under 10 miles away, so tell us roughly how far it went. ## When our engineers arrive around Lillington, what happens? Outside Lillington Primary School, near Lillington Free Church or on your own driveway: wherever the vehicle has stopped, we come to it. What liquid got in, the amount, and whether it ran: our engineers ask since those answers decide the work and price. You hear that quote on the phone, before anyone heads out. Then the tank is emptied and the system flushed thoroughly. Not like petrol, AdBlue leaves crystals and attacks certain fuel-system metals, and neither washes out unaided. That is why it counts more. Filter cleaned or, where needed, swapped; clean diesel in; then a check of the vehicle. After that our engineers fire it up and make sure it runs properly before we leave. If your engine hasn't run, most jobs take about half an hour once we're there, using pumps that are safe on a working forecourt and quiet enough to use outside a house after dark. Your insurer will ask for an engineer's report and the VAT invoice, and both are yours once this job is done. Payment is on the day, with no deposit. Plenty of insurance policies include misfuelling cover, and so it is worth checking yours whilst we are on the way. ## About Lillington and where it is Lillington is a suburban area in Warwickshire, situated on the River Leam at an elevation of around 89 metres. Lillington lies approximately 7 miles south of Coventry and 81 miles northwest of London, with nearby places including Campion Hills and Cubbington. Lillington is characterized by its semi-detached housing and riverside setting, making it a distinct part of the West Midlands region. Lillington has a population of around 7384 residents. ## AdBlue drains about Lillington, and Warwickshire beyond Cubbington and Blackdown are among the towns around Lillington, a residential suburb, that the same teams cover, throughout CV postcodes. A postcode starting CV32 7 gets our van to you fastest. The vehicle does not need to move. We drain it where it is — a side street near St Mary Magdalene, a lay-by on the way to The Holt Park, a drive. If you're near a boundary, or somewhere hard to describe like the back of Lillington Library, ring and ask instead of guessing. ## Lillington drivers: the short version First, the cap; then, the pour. Petrol in Diesel empties it where it stands, anywhere around Warwickshire, if AdBlue has gone in your diesel tank all the same — and so leave the vehicle off then call 0333 366 0103.