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Petrol in Diesel

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Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Far Royds

Leave your engine and ignition off and call 0333 366 0103 now — reading can wait when AdBlue is already in the diesel tank. A drain plus a thorough flush, done right where the vehicle sits in Far Royds, is usually what it needs when caught before the engine runs. If you're reading before it has happened, the remainder of this page is about why it occurs and how to make sure it does not.

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

Many modern diesels on the roads about Far Royds and Beeston Royds carry two liquids, not one. Diesel goes to the engine. Stored in a tank of its own, AdBlue is sprayed into your exhaust gas and cleans it.

Each tank has a filler of its own. On a lot of motors the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet. Diesel gets filled on every forecourt visit, again and again. The AdBlue side is filled far less regularly, normally from a bottle, and normally by a person who has to stop and think where it goes. That gap is where the mistake lives.

Far Royds: how AdBlue in your diesel tank occurs

It's rarely carelessness. Three things tend to line up.

Haste follows from the warning. The vehicle tells you as AdBlue runs low, and a dry tank sends the vehicle into limp mode — so the top-up happens in a rush, before work on a drive off Walker's Lane, or on the way home in the car park outside Hanover Arms.

New-to-you cars are second, as well. Hire cars, new vehicles and company cars place their fillers in new places, and habit goes for the cap it used on the old one.

Nothing stops the pour after it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. Lower Wortley or the heart of Far Royds: it takes the same few seconds in both.

Flushing a diesel fuel system after AdBlue, Far Royds

The AdBlue filler and the diesel filler: telling them apart

Be it a Far Royds forecourt or a drive out in Islington, spend a couple of seconds over these before anything goes in.

  • Check the cap rather than going by where it sits: AdBlue caps are commonly blue or marked "AdBlue", and diesel caps normally aren't.
  • The size. On plenty of vehicles the AdBlue filler neck is the smaller of the two.
  • A label inside your fuel flap frequently shows which fuel goes where, on many cars. Check for it.
  • The handbook says where it lives when the filler isn't next to your diesel cap: the boot, or under the bonnet.
  • The person who drove the vehicle last. On a hire or company car picked up from somewhere like the car park outside Cottingley, ask before you leave, not when the light comes on.

Keeping AdBlue out of your diesel tank when you top up

The day the light comes on, anywhere across West Yorkshire, use this routine.

  • Turn off after you park — level ground, engine off, and never rushed beside Ring Road Low Wortley on the verge.
  • Locate the AdBlue filler, read the cap, and say the name "AdBlue" out loud as unscrewing it. It sounds daft. It does the trick.
  • The two under a single flap? Then make sure the cap on the diesel filler is still shut before lifting the bottle.
  • Finish once the tank is topped up or the bottle runs dry; until then, pour slowly through its own spout.
  • Only then, start your car: close the cap, check once more, and make sure your diesel cap was never opened.

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

Far Royds: already put AdBlue in the diesel tank?

Then the order of things is short. Do not start the motor. Keep the ignition off as well, since on plenty of diesels switching it on alone runs your pump. Don't top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of your tank, where your fuel is sucked from.

Ask the staff to help push the vehicle away from the petrol pump if you're at a forecourt — the Shell, the Esso or somewhere else. At home around Far Royds? Then the car remains put.

Stop as soon as it is safe and switch off, if your engine has already run. Come off the M621 — under a mile out of Far Royds — at the first junction. Tell us about how far it went: a run towards Leeds, under 3 miles away, is a bigger job than a short hop across Far Royds.

Our arrival around Far Royds, and what takes place next

Anywhere the car came to rest, be it by Lower Wortley Primary School, near Saint John's Community Hall or at home, the van travels to it. Which fluid went in, the amount, and if it ran: our technicians ask since those answers decide both work and price. You get that quote on the phone, before anyone heads out.

The fuel system is then cleaned thoroughly, once the tank is cleared. 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 doesn't wash out on its own. Once the fuel filter has been cleaned — or renewed, where required — fresh diesel goes in, and finally the vehicle is tested. Your engine is fired up next and checked to make sure it runs properly, all before our technicians leave.

If your engine hasn't run, the majority of jobs take about half an hour once we are there, using pumps that are safe on a working forecourt and quiet enough to use outside a house at night. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Wrong-fuel cover is included in plenty of insurance policies — so use the wait to check yours.

About Far Royds

Far Royds is a suburban area in West Yorkshire, situated near the River Aire and close to the city of Leeds. Far Royds has a mix of semi-detached housing and is located at an elevation of 44 metres, with nearby places including Lower Wortley and Upper Wortley. Far Royds is part of the larger Leeds urban area, with the city centre just 2.1 miles away.

AdBlue drains in Far Royds and across West Yorkshire

Being a residential suburb, Far Royds shares its vans surrounding areas — New Blackpool, Upper Wortley — all the way across LS postcodes and the surrounding area beyond. Fastest of all: give a LS12 6 postcode for the van.

The car remains where it is. A drive, a lay-by on the way to Western Flatts Cliff Park, a side street near Saint John The Evangelist: our engineers drain it where it sits. Awkward to explain, like the back of Highfield Methodist Church? By a county line? Checking is better than assuming, so phone.

In short, for Far Royds motorists

Before you tip, read the cap. Petrol in Diesel drains it on the spot, anywhere in West Yorkshire, if AdBlue has gone in your diesel tank regardless — and so leave the vehicle off and ring 0333 366 0103.

Call 0333 366 0103