--- title: AdBlue in a Diesel Tank Carminow Cross: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/carminow-cross-cornwall/ location: Carminow Cross county: Cornwall latitude: 50.457990 longitude: -4.699260 service: AdBlue in a Diesel Tank updated: 2026-10-02 --- # Carminow Cross: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? AdBlue already in the diesel tank? Then put this page aside a moment, leave the ignition and engine off, and call 0333 366 0103. Caught before your motor runs, it is normally a drain and a thorough flush, done where the vehicle is in Carminow Cross. Reading in advance? In that case the rest covers how it comes about and how to stop it happening at all. ## Two fillers, two tanks: AdBlue in a diesel vehicle Diesel goes to the engine — yet plenty of current diesels driven around Carminow Cross and Cooksland carry another liquid as well. Stored in a tank of its own, AdBlue is sprayed into the exhaust gas to clean it. Each tank has a filler of its own. Under one flap, next to each other: that's the arrangement on many motors. On others, AdBlue's filler is beneath the bonnet or in the boot instead. The diesel side is topped up at the pump all the time. A driver who has to stop and think where it goes normally tops up the AdBlue side, from a bottle, and far less often. It is in that gap that the slip happens. ## How does AdBlue in your diesel tank happen around Carminow Cross? Rarely is it carelessness: normally three things line up. Hurry comes from the warning. Your car warns you as AdBlue runs low, and a dry tank puts the vehicle into limp mode — so the top-up gets done in a rush, before work on a drive off Castle Canyke Road, or on the way home in the car park at the pub in the village. The old car's cap is where the hand goes — yet a hire car, a new vehicle or a company car puts the fillers somewhere else. That is the second factor: an unfamiliar vehicle. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, and so nothing stops the pour once it has started. It's seconds, whether out in Turfdown or bang in the heart of Carminow Cross. ## Which filler is for AdBlue, and which for diesel? A few seconds is all the checks take — so check them before you tip anything, on a driveway in Newton or a forecourt in Carminow Cross. - The cap. The AdBlue cap is often blue, or marked "AdBlue". The diesel cap normally isn't. Read it rather than going by where it sits. - The size. On many vehicles the AdBlue filler neck is the smaller of the two. - A label inside the fuel flap frequently says which fuel goes where, on plenty of vehicles. Check for it. - In the boot or under the bonnet: that's where the filler is if it's not by the diesel cap, and the handbook tells you which. - The person who drove it last. On a hire or company car collected from somewhere like the car park outside Bodmin Parkway, ask before you leave, not when the light comes on. ## Keeping AdBlue out of your diesel tank when you top up On the day the warning appears — anywhere you are around Cornwall — a routine to follow. - Pull in on level, motor off, with time to spare — never hurried on the side of Lucknow Road South. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick. - The two behind a single flap? Then make sure the lid on the diesel side is still shut ahead of raising the bottle. - Finish once the tank is topped up or the bottle runs dry; until then, tip slowly through the own spout. - Only after that, start the car: close the cap, check once more, and make sure your diesel cap was never opened. Stop there if you find, at step two or three, that you have already poured into the diesel side. Never go on to stage five. ## Carminow Cross: already put AdBlue in your diesel tank? Don't start your engine: that's where the short order of things starts. The fuel pump runs on plenty of diesels the moment the ignition is switched on — so leave it off. Do not top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of your tank, where the fuel is pulled from. On a forecourt — Morrisons, Asda or another — the staff will usually help push the car clear, if you ask. Your own drive in Carminow Cross is the place it stays. Already started? Pull over once it's sensible, then switch off. Leave the M5 — over 50 miles out of Carminow Cross — at the first exit. Mileage counts — a short hop across Carminow Cross is a smaller job than heading under 25 miles to Truro — so say roughly how far it went. ## Our arrival in Carminow Cross, and what takes place next Our technicians come to the vehicle wherever it has stopped, whether that's outside St Petroc's Church of England Voluntary Aided Primary School, near Castle Canyke or on your own driveway. What liquid went in, the quantity, and whether it ran: we ask since the answers decide both work and price. On the call itself, you are told the price — ahead of dispatch. Your system is then flushed thoroughly, once your tank is emptied. Not like petrol, AdBlue leaves crystals and attacks certain fuel-system metals, and none of it washes out by itself. Hence it counts more. After your filter has been flushed — or renewed, where needed — clean diesel is added, and then the vehicle gets tested. Before leaving, we fire it up and confirm that it is running properly. If the engine hasn't 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 documents your insurer wants: an engineer's report and a VAT invoice. It is worth looking at your insurance while we travel to you: misfuelling cover is included with many policies. ## About Carminow Cross Carminow Cross is a small locality in inland Cornwall, situated at an elevation of 136 metres, and is approximately 20.5 miles from the city of Truro. Carminow Cross is characterised by its predominantly detached housing stock, and is close to nearby places such as Turfdown and Fletchersbridge. Carminow Cross has a population of around 579 residents, and is located in a region of gentle hills and wooded valleys. Carminow Cross is also relatively distant from London, at a distance of 211.6 miles. ## AdBlue drains in Carminow Cross and across Cornwall Throughout PL postcodes, the teams that cover Carminow Cross — a small village — work the surrounding locations too, Bodmin and Fletchersbridge included. A postcode starting PL31 1 gets the van to you fastest. No need to shift the vehicle. Wherever it stands — near New Life Church, on a lay-by heading to Bodmin Rugby Club, on a drive — that is where it is emptied. If you're near a boundary, or somewhere hard to describe like the back of Dragon Leisure Centre, ring and ask instead of guessing. ## The short version for Carminow Cross motorists Before you tip, read the cap. AdBlue in your diesel tank after all? Keep the vehicle switched off and ring 0333 366 0103; Petrol in Diesel drains it where it stands, throughout Cornwall.