--- title: AdBlue in a Diesel Tank Oakham: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/oakham-rutland/ location: Oakham county: Rutland latitude: 52.669830 longitude: -0.730070 service: AdBlue in a Diesel Tank updated: 2026-10-14 --- # AdBlue in a Diesel Tank in Oakham: Why It Occurs and How to Avoid It If AdBlue is already in your diesel tank, stop reading for a moment: leave your motor and the ignition off then ring 0333 366 0103. Caught before your motor runs, it is normally a drain and a thorough flush, done where the vehicle is in Oakham. Not happened yet? Further down, the page explains the why it occurs and the how to avoid it for good. ## AdBlue in a diesel car, and its separate tank Not one liquid but two: that is what plenty of newer diesels near Oakham and Burley run, with diesel feeding the motor. AdBlue goes to the exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Each tank comes with one filler of its own. Plenty of motors have a single flap for both, while others move the AdBlue filler to your boot or under the bonnet. At the pump, the diesel side gets filled constantly. The AdBlue side is topped up far less regularly, normally from a bottle, and usually by somebody who has to stop and think where it goes. It is in that gap that the error happens. ## How does AdBlue in the diesel tank take place in Oakham? Carelessness seldom explains it. Instead is three things lining up together. The warning comes first. As AdBlue runs low your car tells you, and if it runs out altogether, your vehicle drops into limp mode. So the top-up is done in a hurry: on a driveway off Church Street before work, or in the car park at Admiral Hornblower on the way home. Then the vehicle is new. A hire car, a new motor or a company car puts the fillers where your last one did not, and the hand gets to for the cap it would have used on the old one. Nothing stops the pour once it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. The same few seconds settle it, in the middle of Oakham or out in Barleythorpe. ## The AdBlue filler and your diesel filler: telling them apart A couple of seconds is all the checks take — so run through them before you pour anything, on a drive in Braunston-in-Rutland or a forecourt around Oakham. - Position misleads; the cap doesn't. AdBlue caps tend to be blue or carry the name "AdBlue" — diesel caps usually do not. - Check the size: the smaller filler neck is, on plenty of motors, the AdBlue one. - A label inside the fuel flap frequently says which fuel goes where, on plenty of motors. Look for it. - The handbook. If your filler is not by your diesel cap, it is in your boot or under the bonnet, and the handbook says which. - The person who drove the car last. On a hire or company car picked up from somewhere like the car park outside the nearest station, ask before you leave, not when the light comes on. ## How to top up without AdBlue in the diesel tank When the light comes on, anywhere in Rutland, use this routine. - Turn off after you park — flat ground, motor off, and never in a rush beside High Street on the verge. - Find the AdBlue filler, read the cap, and say the name "AdBlue" aloud while you unscrew it. It sounds daft. It does the trick. - The diesel cap remains on. When both share a flap, confirm it is shut before lifting the bottle. - Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Before starting the vehicle, shut the cap and look a second time that the diesel cap never came off. Spot at stage two or three that it has already gone into your diesel side? So stop just there. Stage five stays out. ## Oakham: already put AdBlue in your diesel tank? What follows is a short order of things, starting with not starting the motor. The fuel pump runs on many diesels the moment the ignition is switched on — so keep it off. AdBlue does not mix with diesel — it sinks to the bottom of your tank, where the fuel is sucked from — so do not top up with diesel to thin it. The staff at Essar, BP or any forecourt will normally lend a hand pushing the vehicle away when asked. If you are on your own driveway in Oakham, leave the car where it is. If your engine has already run, stop as soon as it is safe then switch off. On the Great North Road, under 25 miles from Oakham, that means the next junction. Tell us roughly how far it went: a run towards Leicester, under 25 miles away, is a bigger job than a short hop across Oakham. ## Our arrival around Oakham, and what happens next Outside English Martyrs' Catholic Voluntary Academy, close to Victoria Hall or on your own driveway: wherever the vehicle has stopped, we come to it. Those replies determine the work and the quote, so our engineers ask what got in, about how much, and if it's run. That price is given over the phone, ahead of any van leaving. Then your tank is cleared and the fuel system rinsed thoroughly. Unlike petrol, AdBlue forms crystals and eats at certain fuel-system metals, and neither washes away unaided. Hence it counts more. Once your filter is cleaned — or renewed, if needed — clean diesel is added, and finally your car gets tested. We do not leave until it has been fired up and is running correctly. Unstarted cars usually mean a half-hour visit from the moment we arrive. The kit is safe on a live filling station, and quiet enough for a residential street after dark. No money in advance; you settle up that day. Afterwards, a VAT invoice and the report from the engineer are handed to you for your insurer. Before we get there, take a look at your policy; plenty carry cover for misfuelling. ## About Oakham, briefly Oakham is a small town in the East Midlands, situated on the River Welland in Rutland, with a population of around 12640 people. Oakham sits at an elevation of 113 metres, surrounded by nearby villages such as Barleythorpe, Egleton, and Langham. Oakham is characterized by its predominantly detached housing stock, reflecting its history of growth and development. Oakham is located 17.1 miles from Leicester and 84.3 miles from London, making it a commuter town with good transport links. ## AdBlue drains across Rutland, Oakham included Egleton and Langham are among the towns near Oakham, a riverside town, that the same teams cover, over LE postcodes. Give a postcode that starts LE15 6, and the van arrives quickest. The car doesn't need to move. Our engineers drain it where it is — a side street near QD Stores, a lay-by on the way to Oakham Castle, a drive. Ring and ask instead of guessing if you are close to a boundary, or somewhere hard to describe, like the back of Dean's Street. ## For Oakham motorists, the short version Tip nothing till you have read the cap. Petrol in Diesel drains it on the spot, anywhere in Rutland, if AdBlue has gone in your diesel tank all the same — and so leave the car off and ring 0333 366 0103.