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Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Bonhard Terrace: Why It Happens and How to Avoid It

AdBlue already in the diesel tank? Then put this page aside a moment, keep the ignition and engine off, and phone 0333 366 0103. Caught before your engine runs, it's usually a drain and a thorough flush, done where the car is in Bonhard Terrace. The rest of this page covers why it takes place and how to ensure it doesn't — useful if you're reading ahead of time.

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Why does AdBlue in a diesel car need its own filler?

Many modern diesels on the roads about Bonhard Terrace and Newtown carry two liquids, not one. Diesel goes to your motor. Your exhaust, not your engine, is where AdBlue ends up: dosed into the fumes to clean it, from a separate tank.

There's a filler for each tank. Other motors put the AdBlue filler in the boot or under the bonnet; plenty of others place the two side by side behind one flap. Diesel gets filled on each forecourt call-out, week in, week out. Far less regularly, the AdBlue side gets filled — normally from a bottle, by a person thinking about where it goes. That gap is where the error lives.

Bonhard Terrace: how AdBlue in the diesel tank happens

It is hardly ever carelessness. Three things tend to line up.

The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out altogether, the vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Drumview Gardens before work, or in the car park outside Newtown Bar on the way home.

Then, your hand goes for the cap it knew on the old motor — since a rental car, a new vehicle or a company car puts the fillers where your last one did not.

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. The same few seconds settle it, in the middle of Bonhard Terrace or out in Mingle.

Flushing a diesel fuel system after AdBlue, Bonhard Terrace

How to tell the AdBlue filler from the diesel one

Whether a Bonhard Terrace forecourt or a drive over in Grangepans, take a couple of seconds over these before any is poured in.

  • The cap. The AdBlue cap is often blue, or marked "AdBlue". The diesel cap normally is not. Read it instead of going by where it sits.
  • On many motors, the size gives it away: AdBlue has the smaller filler neck.
  • The flap. Look inside your fuel flap for a label. Many vehicles say there which fuel goes where.
  • The handbook. If your filler is not by your diesel cap, it is in your boot or under the bonnet, and the handbook says which.
  • Whoever had it before will know. Check when you pick up a rental or company car — from Linlithgow's car park, say — rather than when the light appears.

Topping up AdBlue without it reaching your diesel tank

Anywhere around Falkirk the light comes on, this is a routine for the day.

  • Switch off once parked — flat ground, engine stopped, and not rushed by Muirhead Crescent at the roadside.
  • Silly as it sounds, saying "AdBlue" aloud while you unscrew the cap works — after you've located your filler and read it.
  • If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the vehicle on.
  • Finish when the tank fills or the bottle runs dry; until then, pour gently using the built-in spout.
  • Before you start your car, close the cap and look again that your diesel cap never came off.

If at stage two or three you find you have already poured into the diesel side, stop there. Don't carry on to stage five.

Put AdBlue in your diesel tank in Bonhard Terrace already?

Don't start the motor: that is how the short order of things starts. Keep your ignition off as well, because on many diesels switching it on alone runs the fuel pump. AdBlue doesn't 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 thin it.

If you're on a forecourt, whether it's the Esso or the Hastons of Bo'ness, ask the attendants to help push the vehicle away from the pump. Your own drive in Bonhard Terrace is where it should stay.

Already run? Pull over once it's sensible, then switch off. Bonhard Terrace lies under 3 miles from the M9; there, take the first junction. Tell us roughly how far it went: a run towards Dunfermline, under 10 miles away, is a bigger job than a short hop across Bonhard Terrace.

When our engineers get there in Bonhard Terrace, what takes place?

By the local primary school, near Bo'ness Recreation Centre or on your own drive: wherever the vehicle has stopped, we come to it. Those answers determine the work and the quote, and so our technicians ask what was put in, about how much, and if it has run. No one heads out until you have had the quote by phone.

Then the tank is emptied and the system flushed thoroughly. More than with petrol, it matters with AdBlue: crystals form, some metals are attacked, and nothing clears away unaided, however long it is left. Testing is at the end: before that, fresh diesel goes in, and the filter is cleaned or changed as needed. We do not go until it has been started and is running correctly.

Using pumps fine on a working forecourt and quiet enough to use outside a house at night, most jobs where your motor has not run need about half an hour after our technicians arrive. The insurer usually wants the engineer's report and your VAT invoice, and both are yours once this job is done. Payment is on the day, with no deposit. Plenty of insurance policies include misfuelling cover, and so it is worth checking yours whilst we're on the way.

About Bonhard Terrace and where it is

Bonhard Terrace is a locality situated near the coast in Falkirk, with an elevation of 78 metres and a mix of detached housing. Bonhard Terrace lies within a short distance of several nearby places, including Mingle, Borrowstoun, and Grahamsdyke. Bonhard Terrace is located near Dunfermline, which is 6.9 miles away, and is part of a wider area with a diverse range of communities.

AdBlue drains across Falkirk, Bonhard Terrace included

Throughout EH postcodes, our vans covering Bonhard Terrace — a coastal area — work the nearby places too, Grahamsdyke and Borrowstoun among them. A postcode starting EH51 9 gets our van to you fastest.

Your car stays put. Draining takes place on the spot, be it a drive, a road by Bo'ness Community Learning & Development Base, or a layby towards Community Wood. Ring and ask instead of assuming if you are close to a border, or somewhere hard to explain, like the back of Barony Theatre.

Bonhard Terrace people: the short version

Pour no AdBlue until you have read the cap. Petrol in Diesel empties it where it stands, anywhere across Falkirk, if AdBlue has gone in the diesel tank all the same — and so leave it off and ring 0333 366 0103.

Call 0333 366 0103