--- title: Explained: AdBlue in a Diesel Tank Rainton Gate canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/rainton-gate-durham/ location: Rainton Gate county: Durham latitude: 54.808640 longitude: -1.505040 service: AdBlue in a Diesel Tank updated: 2026-10-23 --- # Rainton Gate: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? AdBlue already in your diesel tank? In that case set this page aside a moment, leave your ignition and engine off, then ring 0333 366 0103. Around Rainton Gate, catching it before your engine runs normally means a drain and a full flush where it stands. If you are reading before it has happened, the remainder of this page is about why it occurs and how to make sure it doesn't. ## Why does AdBlue in a diesel vehicle need its own filler? Plenty of newer diesels in Pittington, like those in Rainton Gate, run on two liquids; the motor takes only your diesel. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own. Separate tanks, different fillers. Under one flap, next to each other: that is the arrangement on many cars. On others, AdBlue's filler sits beneath the bonnet or in the boot instead. At the pump, your diesel side gets filled all the time. Seldom topped up, AdBlue usually goes in from a bottle, tipped by someone who has to stop and think what filler to use. The error lives in that gap. ## Rainton Gate: how AdBlue in the diesel tank occurs Three things tend to come together, and carelessness is seldom one of them. To start with, the warning. Low AdBlue triggers a message from the car, and letting it run dry leads to limp mode — so a rushed top-up, perhaps before work off A690, perhaps outside The Blacksmiths on the way home that evening. New-to-you vehicles are second, too. Rentals, new vehicles and company motors put their fillers in new places, and habit reaches for the cap used on the old one. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip once it has started. Whether it occurs in West Rainton or the middle of Rainton Gate, it is the same few seconds. ## How to tell the AdBlue filler from the diesel one Be it a Rainton Gate forecourt or a driveway over in High Moorsley, spend a few seconds over these before any goes in. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". The diesel cap usually isn't. Read it rather than going by position. - Look at the size: the smaller filler neck is, on plenty of motors, the AdBlue one. - Check inside your fuel flap: plenty of motors carry a label there saying which fuel goes where. - Can't see it next to the diesel filler? In that case look beneath the bonnet or inside the boot — the handbook says which. - The person who drove the vehicle last. On a hire or company car picked up from somewhere like the car park at Durham, ask before you leave, not when the light comes on. ## Keeping AdBlue out of the diesel tank when you top up For the day the light appears — anywhere it is across Durham — a routine to use. - Park and switch off. Not on a slope, not with your motor running, and not in a rush on the side of Pittington Road. - Find the AdBlue filler, check the cap, and speak the name "AdBlue" aloud as you unscrew it. It sounds daft. It works. - The two behind one flap? Then make sure the lid on the diesel side is still closed before raising the bottle. - Finish when your tank is topped up or the bottle is empty; until then, pour gently using its own spout. - Only after that, start your car: close the cap, check once more, and make sure the diesel cap was never opened. Stop there if you find, at stage two or three, that you have already poured into your diesel side. Step five is off limits. ## AdBlue in the diesel tank already, around Rainton Gate? Then the order of things is short. Don't start the motor. Don't switch your ignition on; on plenty of diesels that alone runs the fuel pump. Do not top up with diesel to dilute it: AdBlue doesn't mix with diesel, it sinks to the bottom of that tank, where the fuel is pulled from. The staff at Gulf, Shell or another forecourt will usually help to push the vehicle away when asked. Leave it where it is if you are on your own drive around Rainton Gate. Stop as soon as it is safe then switch off, if the engine has already run. Rainton Gate sits under a mile from the A1(M); on it, take the first exit. A short hop across Rainton Gate is a smaller job than a run towards Durham, under 5 miles away, and so tell us roughly how far it went. ## When our technicians arrive in Rainton Gate, what happens? Outside West Rainton Primary School, near Cow or on your own driveway: wherever your car has stopped, we come to it. We ask what was put in, roughly how much, and whether it's run, because those replies decide this work and the quote. During the call itself, you are told the price — ahead of anything else. Your system is then purged thoroughly, after your tank is emptied. Unlike petrol, AdBlue leaves crystals and attacks certain fuel-system metals, and neither washes away unaided. That is why it counts more. Testing is at the end: before that, clean diesel goes in, and the filter is cleaned or replaced if necessary. The motor is fired up next and tested to confirm it runs correctly, all before our technicians leave. If the engine has not run, most jobs take about half an hour once we're there, using pumps that are safe on a busy forecourt and quiet enough to use outside a house after dark. Payment happens on the day, not upfront, and you are given the paperwork an insurer wants: an engineer's report and a VAT invoice. It's worth looking at your policy as the van travels to you: misfuelling cover is included with many policies. ## About Rainton Gate and where it is Rainton Gate is a suburban area situated on the riverside in County Durham, with a mix of semi-detached housing and a population of around 1312 residents. Rainton Gate lies close to the city of Durham, approximately 3.8 miles away, and is near other local places such as West Rainton and Leamside. Rainton Gate has an elevation of 99 metres and is located 235.1 miles north of London. Rainton Gate forms part of the wider residential area around Durham, with easy access to the city and its amenities. ## Rainton Gate and Durham: AdBlue drains across the area Being a residential suburb, Rainton Gate has the same vans as nearby areas — Leamside, Low Pittington — right through DH postcodes and the surrounding area beyond. The van gets to you fastest with a postcode starting DH4 6. Moving the car isn't necessary. Our technicians drain it where it is — a side street near Jubilee Hall, a lay-by on the way to Mallygill Wood, a drive. Tricky to pin down, like the back of Church of St Mary the Virgin? Close to a border? Checking beats assuming, so phone. ## For Rainton Gate drivers, the short version First, the cap; after that, the pour. AdBlue in the diesel tank regardless? Leave the vehicle switched off then ring 0333 366 0103; Petrol in Diesel empties it where it stands, throughout Durham.