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Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Flackwell Heath: How It Happens and How to Stop It

Leave your motor and ignition off then call 0333 366 0103 first — reading can wait if AdBlue is already in your diesel tank. In Flackwell Heath, catching it before your motor runs usually means draining and a thorough flush where it stands. Reading before the event? Then the rest explains why it happens and what to prevent it ever happening.

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AdBlue in a diesel motor: two tanks, two fillers

Many newer diesels on the roads around Flackwell Heath and Well End carry two liquids, not one. Diesel goes to the engine. Kept in a tank of its own, AdBlue is fed into your exhaust stream to clean it.

Separate tanks, separate fillers. Under one flap, side by side: that is the arrangement on a lot of motors. On others, AdBlue's filler sits under the bonnet or in the boot instead. At the petrol pump, your diesel side gets filled constantly. The AdBlue side is fuelled far less commonly, usually from a bottle, and usually by somebody who has to stop and think where it goes. It is in the gap that the mistake lives.

How AdBlue in your diesel tank takes place in Flackwell Heath

Seldom is it carelessness: usually three things line up.

To start with, the warning. Low AdBlue triggers a warning from your car, and letting it run out means limp mode — so a rushed top-up, maybe before work off Straight Bit, perhaps at Cherry Tree on the way home that evening.

The old car's filler is where the hand goes — but a rental car, a new motor or a company car puts the fillers somewhere else. That is the second factor: a strange motor.

Nothing stops the pour once it has started, since a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits. It takes a few seconds, whether in Loudwater or right in the heart of Flackwell Heath.

Flushing a diesel fuel system after AdBlue, Flackwell Heath

The AdBlue filler and your diesel filler: telling them apart

Look at these first, at a forecourt around Flackwell Heath or a driveway over in Fern. Seconds, no more.

  • Check the cap rather than going by position: AdBlue caps are frequently blue or marked "AdBlue", and diesel caps normally are not.
  • The size. On many cars the AdBlue filler neck is the smaller of the two.
  • The flap. Look inside your fuel flap for a label. Plenty of vehicles say there which fuel goes where.
  • Cannot find it beside the diesel filler? Then look beneath the bonnet or in the boot — the owner's manual will say where.
  • The person who drove the vehicle last. On a hire or company car picked up from somewhere like the car park outside Bourne End, ask before you leave, not when the light comes on.

AdBlue top-ups that never reach your diesel tank

The day the light goes on, wherever across Buckinghamshire, use this routine.

  • Switch off once parked — level ground, motor off, and never rushed by Swains Lane on the verge.
  • Silly as it sounds, speaking "AdBlue" aloud while you unscrew the cap works — once you have located your filler and read the cap.
  • Both under one flap? Then make sure the lid on your diesel side stays shut ahead of lifting the bottle.
  • Finish when the tank is topped up or the bottle is empty; until then, pour gently through the built-in spout.
  • Before starting the vehicle, close the cap and check a second time that the diesel cap never opened off.

Discover during the second or third stage that the bottle went into the diesel tank? That is where you stop. Never go on to stage five.

Put AdBlue in the diesel tank in Flackwell Heath already?

Brief list, then. Top of it: the motor stays unstarted. On plenty of diesels your ignition alone runs the fuel pump, so don't switch the car on. Topping up with diesel won't dilute it: instead, AdBlue sinks to the base of the tank, just where fuel is taken from.

Ask the staff to help roll the car away from the petrol pump if you are at a forecourt — the Shell, the BP or anywhere else. On your own drive around Flackwell Heath? So the vehicle remains put.

If your engine has already run, stop as soon as it is safe and switch off. Flackwell Heath sits under a mile from the M40; there, take the first junction. Tell us about how far it went: a run towards St Albans, under 25 miles away, is a bigger job than a short hop across Flackwell Heath.

When our technicians get there around Flackwell Heath, what takes place?

The van comes to the car wherever it stopped — your own drive, near Community Centre, or by Carrington Junior School. We ask what was put in, roughly how much, and whether it has run, since those replies decide this work and the price. No one heads out until you have had the price by phone.

The fuel system is then cleaned thoroughly, once the tank is drained. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own. The filter flushed or, where it must be, replaced; clean diesel in; and then a check of the car. We don't go until it has been started and is running correctly.

Most jobs are finished in about half an hour once our technicians arrive, as long as the engine hasn't run — and the pumps our technicians use are fine on a live forecourt and quiet at night beside a house. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. While we travel, take a look at your policy; plenty include cover for misfuelling.

About Flackwell Heath, for a moment

Flackwell Heath is a village in Buckinghamshire, situated near the River Wye and close to the neighbouring settlements of Loudwater and Wooburn Moor. Flackwell Heath has a population of around 2097 people and is characterised by its predominantly detached housing stock. Flackwell Heath sits at an elevation of 111 metres, within the South East region of England, and is located approximately 25.9 miles from London. Flackwell Heath is also near to Sheepridge and other local communities.

AdBlue drains in Flackwell Heath and across Buckinghamshire

As a village, Flackwell Heath shares its vans nearby places — Sheepridge, Wooburn Moor — right across HP postcodes and the wider area beyond. Quote a postcode beginning HP10 9, and the van arrives fastest.

The vehicle does not need to move. Our engineers drain it where it is — a side street close to Swim Street, a lay-by on the way to Fennels Wood, a driveway. If you are near a border, or somewhere hard to describe like the back of Flackwell Heath Library, ring and ask instead of assuming.

In short, for Flackwell Heath motorists

Tip no AdBlue till you've read the cap. Still AdBlue in your diesel tank? Petrol in Diesel will drain it wherever it is, wherever around Buckinghamshire: keep it off then phone 0333 366 0103.

Call 0333 366 0103