Skip to content

Petrol in Diesel

0333 366 0103

Newport-on-Tay: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It?

If AdBlue is already in your diesel tank, stop reading for a moment: leave your motor and your ignition off and phone 0333 366 0103. A drain and a thorough flush, carried out just where the vehicle stands around Newport-on-Tay, is usually all it needs when caught before the engine runs. Not happened yet? Further down, the rest of the page explains the why it happens and the ways to prevent it for good.

Call 0333 366 0103

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

Plenty of current diesels on the roads about Newport-on-Tay and Stannergate carry two liquids, not one. Diesel goes to the engine. AdBlue goes to your exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own.

Different tanks, different fillers. Under one flap, next to each other: that's the arrangement on many vehicles. Elsewhere, AdBlue's filler is under the bonnet or in the boot instead. The diesel side is filled at the pump all the time. A driver who has to stop and work out where it goes normally fills the AdBlue side, from a bottle, and far less frequently. That gap is where the slip lives.

How does AdBlue in your diesel tank take place around Newport-on-Tay?

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, your vehicle goes into limp mode. So the top-up is done in a hurry: on a drive off High Street before work, or in the car park at Newport Hotel on the way home.

Then, your hand goes for the cap it would have used on the old vehicle — since a hire car, a new motor or a company car places the fillers somewhere your last one did not.

A spouted bottle meets no obstacle at a diesel filler any more than at an AdBlue one. And so the tip, once started, carries on. Woodhaven or the middle of Newport-on-Tay: it is the same few seconds in both.

Flushing a diesel fuel system after AdBlue, Newport-on-Tay

How to tell the AdBlue filler from the diesel one

Check these before pouring, at a forecourt around Newport-on-Tay or a drive out in Drumoig. A few seconds, that's all.

  • The cap. The AdBlue cap is frequently blue, or marked "AdBlue". Your diesel cap usually isn't. Read it instead of going by position.
  • On many vehicles, size tells: AdBlue gets the smaller filler neck.
  • A label inside your fuel flap frequently says which fuel goes where, on plenty of vehicles. Check for it.
  • In the boot or under the bonnet: that is where the filler sits if it is not by the diesel cap, and the handbook tells you which.
  • Ask the person who drove it last — before you leave, not when the light comes on — if you pick up a hire or company car from somewhere like the car park outside Dundee.

Topping up AdBlue without it reaching the diesel tank

A routine for the day the light comes on, wherever in Fife that is.

  • Not in a rush on the side of Cupar Road, not on a slope, not with your motor running: park and switch off properly.
  • Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick.
  • Leave the diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle.
  • Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty.
  • Before you start your car, close the cap and look a second time that the diesel cap never opened off.

Find at stage two or three that it has already gone into your diesel side? Then stop just there. Never carry on to step five.

Newport-on-Tay: already put AdBlue in your diesel tank?

Do not start your engine: that's where the short order of things begins. On plenty of diesels the ignition alone runs the fuel pump, so don't switch the vehicle on. Topping up with diesel won't dilute it: rather than mixing, AdBlue sinks to the base of the tank, right where the fuel is taken from.

If you're on a forecourt, whether it is the Shell or the Tesco, ask the staff to help push the car away from the petrol pump. If you are on your own drive around Newport-on-Tay, leave the car where it stands.

Already run? Pull over when it's sensible, then switch off. Leave the M90 — under 25 miles out of Newport-on-Tay — at the first exit. About how far did it go? Crossing Newport-on-Tay is less a job than a run of under 3 miles towards Dundee, so tell us.

When our engineers get there in Newport-on-Tay, what happens?

The van reaches your car anywhere it has come to rest — your own driveway, near Newport-On-Tay Church of Scotland, or by the local primary school. What liquid was put in, the quantity, and whether it ran: our engineers ask since the answers decide the work and price. The quote comes on the call, ahead of any van leaving.

Draining your tank comes next, followed by a full flush of the system. With AdBlue that counts 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. Filter flushed or, if it must be, replaced; fresh diesel in; and then a check of your vehicle. Then our technicians fire it up and make sure it runs properly before leaving.

Unstarted vehicles mostly mean a half-hour job from arrival. The equipment is safe on a live forecourt, and quiet enough for a residential street late at night. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Before we get there, take a look at your policy; many carry cover for misfuelling.

About Newport-on-Tay, briefly

Newport-on-Tay is a coastal town in Fife, situated on the southern shore of the Firth of Tay, with Woodhaven and Wormit nearby. Newport-on-Tay has a population of around 2468 people and is characterized by semi-detached housing. Newport-on-Tay is located close to Dundee, Scotland's fourth-largest city, and offers residents a mix of coastal and urban amenities. Newport-on-Tay sits at a low elevation of 12 metres above sea level, with the North Sea to the east.

AdBlue drains in Newport-on-Tay and across Fife

Being a coastal town, Newport-on-Tay has the same vans as surrounding areas — Dundee, Wormit — all the way across DD postcodes and the surrounding area beyond. Quickest of all: give a DD6 8 postcode to our van.

The vehicle doesn't need to shift. Anywhere it stands — near Newport War Memorial, in a layby heading to The Braes, at home — that's where it gets drained. Guessing won't help behind War Memorial Wall, on a border, or anywhere hard to pin down; ring and ask.

Newport-on-Tay motorists: the short version

Read the cap before you pour. Still AdBlue in your diesel tank? Petrol in Diesel can drain it where it is, wherever around Fife: keep it off then call 0333 366 0103.

Call 0333 366 0103