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Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Lower Tremar: Why It Happens and How to Stop It

Leave the motor and ignition off then phone 0333 366 0103 first — the rest can wait when AdBlue is already in the diesel tank. Around Lower Tremar, catching it before the engine turns normally means draining and a thorough flush where it stands. Here in advance? In that case what follows covers why it happens and what to stop it happening at all.

Call 0333 366 0103

Two fillers, two tanks: AdBlue in a diesel motor

Diesel feeds your motor — but plenty of newer diesels driven about Lower Tremar and St Cleer hold another fluid too. AdBlue's own tank holds it, and from there it goes to the exhaust, and there a spray treats the fumes.

There's a filler for each tank. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in your boot or under the bonnet. Diesel goes in on each filling station call-out, again and again. The AdBlue side is fuelled far less often, usually from a bottle, and usually by somebody who has to stop and think where it goes. It's in that gap that the error happens.

How AdBlue in the diesel tank takes place around Lower Tremar

It is seldom carelessness. Three things tend to line up.

The warning comes first. As AdBlue runs low the car tells you, and if it runs out completely, your vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Kimberley Lane before work, or in the car park outside Market Inn on the way home.

Next, the hand reaches for the cap it would have used on the old vehicle — because a hire car, a new vehicle or a company car puts the fillers where your last one did not.

A spouted bottle finds no resistance at a diesel filler any more than at an AdBlue one. So the tip, after begun, carries on. It takes seconds, whether in Tremar or bang in the heart of Lower Tremar.

Flushing a diesel fuel system after AdBlue, Lower Tremar

The AdBlue filler and your diesel filler: telling them apart

Before you tip anything, whether on a drive in Darite or a forecourt in Lower Tremar, check these. They take a couple of seconds.

  • Position misleads; the cap doesn't. AdBlue ones are often blue or carry the name "AdBlue" — diesel ones usually don't.
  • Check the size: the smaller filler neck is, on plenty of motors, the AdBlue one.
  • Look inside your fuel flap: plenty of motors have a label there saying which fuel goes where.
  • In the boot or under the bonnet: that is where your filler is if it is not by the diesel cap, and the handbook says which.
  • Collecting a hire or company car, perhaps at the car park at Liskeard? Check with the person who drove the vehicle last before leaving, rather than when the light goes on.

Keeping AdBlue out of the diesel tank when you top up

The day the light comes on, anywhere around Cornwall, use this routine.

  • Park then switch off. Not on a slope, not with the engine running, and not in a rush on the side of Venland Close.
  • Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it works.
  • The diesel cap remains on. When the two share a flap, confirm it is shut before lifting the bottle.
  • Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty.
  • Before you start the car, shut the cap and check a second time that the diesel cap was never came off.

Spot at stage two or three that it's already gone into your diesel side? Then stop just there. Don't carry on to step five.

AdBlue in the diesel tank already, in Lower Tremar?

Brief list, then. Top of that: the motor stays unstarted. The fuel pump runs on plenty of diesels the moment the ignition is switched on — and so leave it off. Thinning it with more diesel won't work, because AdBlue settles to the bottom instead of blending — and that's where your fuel is drawn from.

At a forecourt — BP, Morrisons or another — the attendants will normally help roll the vehicle clear, when you ask. Leave it where it is if you are on your own drive around Lower Tremar.

Where your motor has run already, pull over safely then switch the car off. Come off the M5 — under 50 miles out of Lower Tremar — at the first exit. Distance matters — a quick hop across Lower Tremar is a smaller job than driving under 25 miles towards Plymouth — so tell us roughly how far it went.

Our arrival in Lower Tremar, and what happens next

Our engineers come to your car wherever it has stopped, whether that is outside St Cleer Primary Academy, near Trethevy Quoit or on your own driveway. Both the work and our price depend on three replies — what liquid, which amount, and whether it's run — so we ask. During the call itself, you hear the quote — ahead of anything else.

Draining your tank comes next, then a full flush of the fuel 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 doesn't wash out on its own. A test comes at the end: before that, clean diesel is added, and the fuel filter is cleaned or replaced if necessary. We do not go until it has been started and is running properly.

Unrun cars mostly need a half-hour visit after arrival. The equipment is safe on a busy forecourt, and quiet enough for a driveway late at night. Payment happens on the day, not upfront, and you receive the paperwork an insurer asks for: an engineer report and a VAT invoice. Plenty of insurance policies include misfuelling cover, and so it's worth checking yours while we are on the way.

About Lower Tremar itself

Lower Tremar is a small suburban area in Cornwall, situated inland at an elevation of 162 metres. Lower Tremar lies near the settlements of Tremar and Tremar Coombe, and is characterized by its predominantly detached housing stock. Lower Tremar is located approximately 16 miles from Plymouth, and its residents are around 201 miles from London.

AdBlue drains in Lower Tremar and across Cornwall

Lower Tremar is a residential suburb, and our teams that cover it also work the places near it, Tremar Coombe and Rosecraddoc among them, across the PL postcode area. A postcode starting PL14 5 gets the van to you fastest.

No need to move the vehicle. A drive, a lay-by on the way to Pickshill Wood, a side street near St Cleer Village Hall: our technicians drain the vehicle where it is. Tricky to pin down, like the back of St. Cleer's Well? Close to a county line? Checking is better than assuming, and so ring.

For Lower Tremar drivers, the short version

Always, the cap; after that, the pour. If AdBlue has gone in your diesel tank regardless, leave the car off and ring 0333 366 0103. Petrol in Diesel empties it where it stands, anywhere around Cornwall.

Call 0333 366 0103