--- title: AdBlue in a Diesel Tank Brockworth: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/brockworth-gloucestershire/ location: Brockworth county: Gloucestershire latitude: 51.847900 longitude: -2.158420 service: AdBlue in a Diesel Tank updated: 2026-10-21 --- # AdBlue in a Diesel Tank in Brockworth: How It Occurs and How to Prevent It AdBlue already in the diesel tank? Then set this page down a moment, leave the ignition and motor off, and phone 0333 366 0103. Caught before your engine runs, it is usually a drain and a thorough flush, done where the vehicle is around Brockworth. The remainder of this page explains why it takes place and how to make sure it doesn't — handy if you are reading before it has happened. ## AdBlue in a diesel car: two tanks, two fillers Diesel goes to the engine — yet plenty of newer diesels driven around Brockworth and Coopers Hill hold a second fluid as well. AdBlue goes to the exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. There is a filler on every tank. Plenty of cars share a single flap for both, whereas others move the AdBlue filler to your boot or under the bonnet. At the petrol pump, your diesel side is topped up all the time. Seldom topped up, AdBlue usually comes out of a bottle, tipped by a driver who must stop and think what cap it needs. It is in the gap that the mistake happens. ## How does AdBlue in your diesel tank happen around Brockworth? Seldom is it carelessness: usually three things line up. First, the warning. Low AdBlue brings a message from your car, and letting it run out leads to limp mode — hence a rushed top-up, maybe before work off Court Road, perhaps outside The Victoria Inn on the way home that evening. Then the vehicle is new. A hire car, a new car or a company car puts the fillers where your last one did not, and your hand hits for the cap it would have used on the old one. No part halts the pour once it has started, because a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. It's seconds, be it out in Watermead or right in the heart of Brockworth. ## How to tell the AdBlue filler from the diesel one A few seconds is all the checks take — so check them before you pour anything, on a drive in Little Witcombe or a forecourt in Brockworth. - The cap. The AdBlue cap is frequently blue, or marked "AdBlue". Your diesel cap normally is not. Read it instead of going by position. - Check the size: the smaller neck is, on plenty of motors, the AdBlue one. - The flap. Look inside your fuel flap for a label. Many cars say there which fuel goes where. - Can't see it next to the diesel inlet? Then check below the bonnet or in the boot — the owner's manual will say which. - The previous driver will know. Check as you collect a rental or fleet car — from Gloucester's car park, say — not when the warning appears. ## AdBlue top-ups that never reach the diesel tank Anywhere in Gloucestershire the light comes on, this is a routine for that day. - Switch off after you park — level ground, motor off, and not in a rush beside Moorfield Road at the roadside. - Daft as it sounds, speaking "AdBlue" aloud while you unscrew the cap does the trick — once you've located the filler and read the cap. - Leave the diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle. - Gently is best, through the bottle's own spout, till it is full or the bottle runs out. - Shut the cap, and look again — making sure the diesel filler remained closed the whole time. After that, start the car. Discover at the second or third stage that AdBlue went in the wrong filler? That's where you stop. Skip step five entirely. ## Already put AdBlue in your diesel tank around Brockworth? Then the order of things is short. Don't start the motor. The fuel pump runs on many diesels as soon as the ignition is switched on — so leave it off. Diluting it with more diesel won't work, because AdBlue sinks to the base rather than mixing — and that's where your fuel is drawn from. If you're on a forecourt, whether it's the Shell or the Tesco, ask the staff to help roll your car away from the petrol pump. On your own drive in Brockworth? Then the vehicle remains where it is. Already run? Pull over once it is safe, then turn off. Brockworth lies under a mile from the M5; on it, use the first junction. A short hop across Brockworth is a smaller job than a run towards Gloucester, under 5 miles away, and so tell us about how far it went. ## What happens when our engineers arrive in Brockworth Wherever the vehicle has stopped, be it by Lift Brockworth, near Brockworth Community Centre or on your own drive, our van comes to it. Which fluid was put in, the amount, and whether it ran: we ask because those answers decide the work and price. The quote comes over the phone, before any van leaves. Then the tank is drained and the system flushed thoroughly. More than with petrol, it counts here: crystals form, certain metals are attacked, and nothing washes out on its own, however long it is left. The filter cleaned or, where it must be, replaced; fresh diesel in; then a check of your car. Next our technicians fire it up and check it runs smoothly before leaving. Unstarted cars usually mean a half-hour job from arrival. The equipment is safe on a live forecourt, and hushed enough for a residential street late at night. No money in advance; you settle up on the day. At the end, a VAT invoice and a report from the engineer go to you for your insurer. It's worth looking at your insurance as the van travels to you: misfuelling cover is included with many policies. ## About Brockworth itself Brockworth is a village in Gloucestershire, situated near the River Severn, with an elevation of around 56 metres. Brockworth lies close to the city of Gloucester, approximately 3.9 miles away, and is near other local places such as Watermead and Green Street. Brockworth has a population of around 2234 people, predominantly living in semi-detached housing. Brockworth is located in the South West region of England, about 90.1 miles from London. ## AdBlue drains about Brockworth, and Gloucestershire beyond Green Street and Henley are among the towns near Brockworth, a village, that the same teams cover, throughout GL postcodes. Quickest of all: give a GL3 4 postcode for our van. No need to move your car. A driveway, a lay-by on the way to Henley Bank Community Wood, a side street close to Brockworth Library: our engineers drain the car where it stands. Guessing won't help at the back of St George's Church Centre, close to a boundary, or somewhere awkward to describe; phone and check. ## In short, for Brockworth motorists Tip no AdBlue till you have read the cap. If AdBlue has gone in your diesel tank all the same, leave the car off and phone 0333 366 0103. Petrol in Diesel clears it where it stands, anywhere in Gloucestershire.