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Petrol in Diesel

0333 366 0103

Avoiding AdBlue in a Diesel Tank in Whaddon: Why It Occurs

Stop here for a moment if your diesel tank already holds AdBlue in it: ignition off, engine off, then phone 0333 366 0103. Caught before the motor runs, it's normally a drain and a thorough flush, done where your car is in Whaddon. Reading in advance? Then the rest covers why it happens and how to stop it happening at all.

Call 0333 366 0103

Two fillers, two tanks: AdBlue in a diesel car

No single fluid but two: that's how many newer diesels near Whaddon and Charlton All Saints carry, with diesel for your motor. Your exhaust, not your motor, is where AdBlue goes: dosed into the fumes to fresh them, from a separate tank.

There is a filler on each tank. Some vehicles keep the AdBlue filler in your boot or under the bonnet; a lot more have the two together under one flap. Diesel gets filled on each filling station visit, again and again. Someone who has to stop and think where it goes usually fills the AdBlue side, from a bottle, and much less commonly. That gap is where the mistake lives.

How does AdBlue in the diesel tank happen in Whaddon?

Three things tend to line up, and carelessness is rarely one of them.

Haste comes from the warning. The vehicle warns you as AdBlue runs low, and a dry tank puts the vehicle into limp mode — so the top-up happens quickly, before work on a driveway off Southampton Road, or heading home in the car park outside The Three Crowns.

Unfamiliar cars are second, as well. Hire cars, new motors and company motors place their fillers in new places, and habit reaches for the cap it used on the old one.

A spouted bottle meets no obstacle at a diesel filler any more than at an AdBlue one. So the tip, once started, carries on. Alderbury or the heart of Whaddon: it takes the same few seconds either way.

Flushing a diesel fuel system after AdBlue, Whaddon

How to tell the AdBlue filler from the diesel one

A couple of seconds is all these take — so check them before you pour anything, on a driveway in Bodenham or a forecourt in Whaddon.

  • Colour and lettering: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap normally doesn't. Trust the cap, not where it sits.
  • Look at the size: the smaller filler neck is, on many motors, the AdBlue one.
  • A label inside the fuel flap frequently says which fuel goes where, on many vehicles. Check for it.
  • In the boot or under the bonnet: that is where the filler is if it's not by the diesel cap, and the handbook tells you which.
  • The person who drove the car last. On a hire or company car picked up from somewhere like the car park outside Dean, ask before you leave, not when the light comes on.

AdBlue top-ups that never reach the diesel tank

Wherever in Wiltshire the light comes on, this is a routine for the day.

  • Pull in somewhere level, engine off, with time to spare — never hurried on the side of Kiln Close.
  • Find the AdBlue filler, read the cap, and say the word "AdBlue" out loud as you unscrew it. It sounds daft. It does the trick.
  • If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the car on.
  • Slowly is best, through the bottle's own spout, until it is full or the bottle is empty.
  • Close the cap, then look again — making sure your diesel cap remained shut the whole time. After that, start the car.

Stop there if you find, at stage two or three, that you've already poured into your diesel side. Don't go on to stage five.

AdBlue in your diesel tank already, in Whaddon?

Don't start your engine: that is how the short order of things starts. Don't switch your ignition on; on many diesels that alone runs the fuel pump. Filling up with diesel won't dilute it: instead, AdBlue sinks to the base of your tank, just where fuel is drawn from.

If you're on a forecourt, whether it's the Tesco or the Esso, ask the attendants to help push the car away from the pump. Your own driveway around Whaddon is the place it should stay.

If your engine has already run, stop as soon as it is safe then switch off. Whaddon lies under 10 miles from the M27; on it, take the first junction. A short hop across Whaddon is a smaller job than a run towards Salisbury, under 5 miles away, so tell us about how far it went.

Whaddon: what happens when our technicians turn up

Outside Alderbury and West Grimstead Church of England Primary School, near Alderbury Village Hall or on your own drive: wherever the car has stopped, we come to it. Both the work and the quote rest on three replies — what fluid, what amount, and if it has run — so our technicians ask. On the call itself, you hear our price — before anything else.

Next: a drain, then a full flush of the entire system. Not like petrol, AdBlue forms crystals and eats at some fuel-system metals, and neither clears out unaided. That is why it counts more. The filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. Next we fire it up and make sure it runs properly before we leave.

Most jobs are done in roughly half an hour once we get there, as long as the engine has not run — and the pumps our technicians use are fine on a busy forecourt yet quiet at night beside a house. Paying is on the day, not upfront, and you are given the paperwork your insurer wants: an engineer's report and a VAT invoice. Wrong-fuel cover is included in many insurance policies — and so make use of the wait to look at yours.

About Whaddon and where it is

Whaddon is a village in Wiltshire, situated on the banks of the River Avon at an elevation of around 75 metres. Whaddon lies near the city of Salisbury, approximately 4 miles to the east, and is surrounded by nearby villages such as Alderbury and West Grimstead. Whaddon has a population of around 662 people, predominantly living in detached houses. Whaddon is located in the South West region of England, about 76 miles west of London.

Whaddon and Wiltshire: AdBlue drains across the area

Being a village, Whaddon has the same vans as surrounding places — West Grimstead, Shute End — right across SP postcodes and the wider area beyond. Quote a postcode that starts SP5 3, and the van arrives fastest.

Your car does not need to move. Draining happens on the spot, be it a drive, a road near Alderbury and Whaddon Village Sign, or a lay-by on the way to Oakridge Copse. Tricky to explain, like the back of Walden House? Close to a border? Asking beats assuming, so ring.

The short version for Whaddon motorists

Tip no AdBlue until you have read the cap. If AdBlue has gone in the diesel tank anyway, leave the car off then call 0333 366 0103. Petrol in Diesel clears it where it stands, anywhere around Wiltshire.

Call 0333 366 0103