--- title: Skimpedhill: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/skimpedhill-berkshire/ location: Skimpedhill county: Berkshire latitude: 51.414680 longitude: -0.760250 service: AdBlue in a Diesel Tank updated: 2026-10-11 --- # Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Skimpedhill AdBlue already in your diesel tank? Then set this page down a moment, keep your ignition and engine off, and phone 0333 366 0103. In Skimpedhill, catching it before the motor turns usually leaves draining and a thorough flush on the spot. Nothing happened yet? Further down, the page explains the reasons it occurs and the how to avoid it altogether. ## AdBlue in a diesel car, and its separate tank Plenty of modern diesels around Farleywood, as well as Skimpedhill, carry on two liquids; your motor takes just your diesel. Stored in a tank of its own, AdBlue is fed into the exhaust stream and cleans it. Different tanks, different fillers. Under one flap, side by side: that's the layout on many vehicles. Elsewhere, AdBlue's filler sits beneath the bonnet or in the boot instead. Topping up the diesel side at the petrol pump goes on all the time. Someone who has to stop and work out where it goes usually tops up the AdBlue side, from a bottle, and much less often. That gap is where the slip lives. ## How AdBlue in the diesel tank takes place around Skimpedhill Three things tend to come together, and carelessness is rarely one of them. On a driveway off Downshire Way before work, or in the car park at The Market Inn heading home: that is where the rushed top-up happens. Why the rush? As AdBlue runs low your car warns you, and once it is empty, limp mode follows. Then your car is unfamiliar. A hire car, a new car 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. Lastly, the spout fits: diesel filler or AdBlue one, it slides in as easily, and after the pour starts, no part stops it. The same few seconds decide it, in the middle of Skimpedhill or out in Bracknell. ## Which filler is for AdBlue, and which for diesel? A few seconds is all the checks take — so check them before you pour anything, on a drive in Easthampstead or a forecourt around Skimpedhill. - Position can mislead; the cap does not. AdBlue caps tend to be blue or bear the name "AdBlue" — diesel ones normally don't. - Many vehicles give AdBlue the smaller filler of the two. - Lift the filler flap and look for a label — plenty of motors mark which goes in which filler right there. - The handbook shows which it lives when your filler isn't next to your diesel cap: your boot, or under the bonnet. - Picking up a hire or company car, say at the car park at Bracknell? Check with whoever drove the car last before you set off, not when the light comes on. ## How to top up without AdBlue in the diesel tank When the light goes on, anywhere around Berkshire, follow this routine. - Park then switch off. Not on a slope, not with your motor running, and not in a rush on the side of Twin Bridges Roundabout. - Find the AdBlue filler, check the cap, and say the name "AdBlue" out loud while you unscrew it. It sounds daft. It does the trick. - Leave your diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle. - Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty. - Before starting the vehicle, shut the cap and look again that your diesel cap was never opened off. If at stage two or three you find you have already poured into the diesel side, stop there. Never carry on to stage five. ## Put AdBlue in the diesel tank in Skimpedhill already? Brief list, then. Top of it: your motor remains off. Keep the ignition off too, because on many diesels switching it on by itself runs your pump. Filling up with diesel will not thin it: rather than mixing, AdBlue drops to the bottom of that tank, right where the fuel is drawn from. The staff at Esso, BP or any forecourt will usually help to push your car clear when you ask. If you're on your own driveway in Skimpedhill, leave the vehicle where it is. Where the engine has run by now, pull over somewhere safe and switch it off. On the A329(M), under 3 miles from Skimpedhill, that means the next junction. Mileage counts — a quick hop across Skimpedhill is a smaller job than heading under 50 miles towards Westminster — so say roughly how far it went. ## When we get there in Skimpedhill, what occurs? Our technicians come to the vehicle wherever it has stopped, whether that's outside Wildridings Primary School, close to Sperry's Gyroscope or on your own drive. Our technicians ask what was put in, roughly how much, and whether it has run, because the replies determine the work and the quote. During the call itself, you hear our price — before dispatch. Then the tank is drained and the system cleaned thoroughly. More than with petrol, it matters here: the crystals build up, certain metals are attacked, and nothing clears out unaided, no matter how long it is left. Once the filter is cleaned — or renewed, if required — fresh diesel goes in, and then the car is tested. Before we leave, we fire it up and check that it is running smoothly. Unrun vehicles usually need a half-hour visit after arrival. The equipment is fine on a live filling station, and quiet enough for a residential street late at night. Payment is on the day, not upfront, and you receive the paperwork an insurer wants: an engineer's report and a VAT invoice. It's worth checking your insurance as the van travels to you: misfuelling cover is included with many policies. ## About Skimpedhill, briefly Skimpedhill is a suburban area in Berkshire, situated inland at an elevation of 66 metres, and is located approximately 28 miles from London. Skimpedhill forms part of the larger Bracknell urban area, with nearby neighbourhoods including Wildridings and Priestwood. Skimpedhill is characterized by a high proportion of flat dwellings, which are typical of many suburban areas in the South East of England. Skimpedhill has a population of around 4022 residents, according to recent estimates. ## AdBlue drains around Skimpedhill, and Berkshire beyond Wildridings and Priestwood are among the towns near Skimpedhill, a residential suburb, that the same teams cover, over RG postcodes. A postcode starting RG12 1 gets our van to you fastest. The vehicle remains put. Wherever it stands — beside Odeon, on a lay-by en route to Frog Copse, at home — that is where it gets emptied. If you're near a boundary, or somewhere hard to describe like the back of Pigeon, ring and ask instead of assuming. ## Skimpedhill motorists: the short version First, the cap; after that, the pour. Still AdBlue in your diesel tank? Petrol in Diesel can drain it wherever it stands, wherever in Berkshire: keep the vehicle off then phone 0333 366 0103.