--- title: Faldingworth: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/faldingworth-lincolnshire/ location: Faldingworth county: Lincolnshire latitude: 53.347580 longitude: -0.400160 service: AdBlue in a Diesel Tank updated: 2026-10-19 --- # Faldingworth: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? If AdBlue is already in your diesel tank, stop reading for a moment: leave the motor and the ignition off and call 0333 366 0103. Caught before your motor runs, it's normally a drain and a thorough flush, done where the car is around Faldingworth. Nothing happened yet? Below, the page covers the why it occurs and the ways to avoid it for good. ## AdBlue in a diesel vehicle: two tanks, two fillers Not one fluid but two: that's how plenty of modern diesels around Faldingworth and Snarford carry, with diesel for your motor. Its own tank holds it, and from there it goes to the exhaust, where a spray treats the fumes. There is a filler on every tank. Under one flap, next to each other: that is the layout on a lot of cars. On others, AdBlue's filler sits under the bonnet or in your boot instead. Diesel goes in on every forecourt call-out, week in, week out. The AdBlue side is filled far less regularly, normally from a bottle, and normally by somebody who has to stop and think where it goes. The error lives in that gap. ## How does AdBlue in your diesel tank occur around Faldingworth? It is rarely carelessness. Three things tend to line up. On a drive off Stocks Lane before work, or in the car park at the pub in the village heading home: that is where the rushed top-up happens. Why the rush? As AdBlue gets low the car warns you, and if it's empty, limp mode kicks in. The old car's cap is where your hand reaches — yet a hire car, a new vehicle or a company car puts the fillers elsewhere. That's the second factor: a strange car. No part stops the tip after it has started, because a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. Friesthorpe or the middle of Faldingworth: it is the same few seconds in both. ## How to tell the AdBlue filler from the diesel one Be it a Faldingworth forecourt or a drive out in Newton by Toft, spend a couple of seconds over these before anything is poured in. - The cap. The AdBlue cap is frequently blue, or marked "AdBlue". Your diesel cap usually is not. Read it instead of going by where it sits. - The size. On plenty of motors the AdBlue filler neck is the smaller of the two. - A label inside the fuel flap frequently says which fuel goes where, on many vehicles. Check for it. - The handbook. If your filler is not by your diesel cap, it's in the boot or under the bonnet, and the handbook says which. - The previous driver knows. Ask as you pick up a hire car or fleet car — at Market Rasen's car park, perhaps — rather than once the light comes on. ## Topping up AdBlue without it reaching the diesel tank Wherever around Lincolnshire the light comes on, here is a routine for the day. - Stop on level, motor off, with time to spare — not rushing on the side of Spridlington Road. - Silly as it sounds, saying "AdBlue" out loud while you unscrew the cap works — after you've found your filler and read the cap. - Leave the diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Shut the cap, then check once more — making sure the diesel filler stayed shut throughout. Only then, start the car. Spot at stage two or three that it has already gone into the diesel side? Then stop just there. Step five is out. ## AdBlue in your diesel tank already, around Faldingworth? Don't start your engine: that's how the short order of things begins. Don't switch the ignition on; on plenty of diesels that alone runs the fuel pump. AdBlue does not mix with diesel — it sinks to the bottom of that tank, where your fuel is drawn from — so don't top up with diesel to dilute it. Ask the staff to help roll your car clear of the petrol pump if you are on a forecourt — the Tesco, the another forecourt nearby or anywhere else. If you are on your own driveway around Faldingworth, leave it where it stands. Already run? Pull over when it's sensible, then turn off. Come off the M180 — under 15 miles out of Faldingworth — at the next junction. Tell us about how far it went: a run towards Lincoln, under 10 miles away, is a bigger job than a short hop across Faldingworth. ## Our arrival around Faldingworth, and what happens next Outside Faldingworth Community Primary School, near All Saints Church or on your own driveway: wherever your car has stopped, our engineers come to it. Which fluid went in, the quantity, and if it ran: our technicians ask since the replies decide the work and price. Nobody heads out before you have heard the quote by phone. Then the tank is drained and your system flushed thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own — which is why that matters more here than with petrol. After the fuel filter has been flushed — or replaced, where required — fresh diesel goes in, and finally your car is tested. Before we leave, we start it and check that it's running smoothly. With pumps fine on a busy forecourt and quiet enough to use outside a house at night, most jobs in which the engine hasn't run need about half an hour once we arrive. The insurer will ask for the engineer's report and your VAT invoice, and both are yours at the end. Payment is on the day, with no deposit. Misfuelling cover is part of plenty of insurance policies — and so make use of the wait to check yours. ## About Faldingworth itself Faldingworth is a small village in Lincolnshire, situated near the River Trent at an elevation of around 26 metres. Faldingworth lies close to the cities of Lincoln and is surrounded by other villages such as Friesthorpe and Buslingthorpe. Faldingworth has a population of approximately 505 people and predominantly consists of detached housing. Faldingworth is located about 127.7 miles north of London, making it a relatively rural community. ## Faldingworth and Lincolnshire: AdBlue drains across the area Buslingthorpe and Newtoft are among the towns near Faldingworth, a village, that the same teams cover, over LN postcodes. Give a postcode beginning LN8 3, and the van gets there quickest. Your car does not need to shift. We drain it where it is — a side street close to Faldingworth Memorial Hall, a lay-by on the way to Shaft Wood, a drive. If you're close to a border, or somewhere hard to describe like the back of St Peter, ring and ask instead of guessing. ## The short version for Faldingworth motorists Read the cap before you tip. If AdBlue has gone in the diesel tank anyway, leave the vehicle off then call 0333 366 0103. Petrol in Diesel empties it where it stands, anywhere around Lincolnshire.