Should You Worry? Petrol in a Diesel Car in Town End
Unstarted? Then less worried than you probably feel. Petrol sitting in a diesel tank does nothing to your engine until something pulls it through the system — the ignition priming the pump, the starter, or driving itself. So the fair answer to the first query everyone in Town End asks, "have I wrecked it?", is normally no. To keep the vehicle that way, ring Petrol in Diesel then leave your engine alone. Further down, this page sets out what petrol actually does inside a diesel, how far it might have got, and how to stop it happening to you a second time.
The engine and petrol in a diesel: what happens
On its way through an engine, diesel does two jobs. It protects first, and after that does it burn. The high-pressure fuel pump and your injectors are built to extremely fine clearances, and the diesel passing through them is what stops those surfaces from wearing against each other.
Poorly at the first, not at all at the second: that is petrol. It is thinner than diesel and takes away the lubrication the fuel system rests on, so a pump running on a petrol blend is a pump wearing itself. And petrol is made to resist igniting under compression, which is the opposite of what a diesel needs from its fuel. That is where the clattering comes from.
The shape of the problem is clear when you put those together. The harm is done by circulation, not by contact. Any tank with petrol in it is a fuel issue. The beginning of a mechanical one is a pump that has been labouring on that petrol — and whatever a worn pump sheds travels on with the fuel to the injectors downstream.
Petrol in a diesel in Town End: how serious is it? Four situations
The best case there can be: filled up, not once started. That petrol is inside the tank and only the tank, and the job is a drain and a flush where the car stands. This is the one situation that can only truly occur at a forecourt, because anywhere else the car has been driven to get there.
Ignition on, or started for a moment. Petrol has left that tank and got to the filter and the fuel lines, since the system has been bled. Drain, flush, deal with the filter: still normally simple.
A couple of miles driven, and the pump has spent each of them running on thinned fuel. Distance is only half of that; how hard it was driven matters equally. Either way this work includes the tank, the lines, the filter and clean fuel through the entire system. Short trips, like the school run to New Mill Infant School, are one thing. Getting as far as Wakefield, under 15 miles away, makes a very different job — as does any distance on the Outlane Interchange, under 10 miles from Town End, with the engine running hard all the way.
Driven till it complained. Clattering, a ragged idle, smoke, a throttle that has gone soft. What you are hearing is the motor signalling fuel that no longer behaves like diesel. Stop wherever you are — the verge on Leyfield Bank, a lay-by, a side street — and leave the vehicle there. The drain and flush-through still come first, and they take care of it: if a car is stopped quickly, lasting damage is very rare.
What Town End people get told about petrol in a diesel — and the stories in it
Myth: topping up to full with diesel makes it fine. It does not. Topping up removes nothing; it gives you a fuller tank of the same mix. That guidance assumes a diesel fuel system handles petrol by percentage. It doesn't.
If anything, the opposite is true. Myth: "A newer diesel can cope with a bit of petrol." A modern diesel runs its fuel through more precise parts at higher pressure, which makes the protection count more, not less.
Myth: "If it starts and drives, there is no damage done." This is the one that fools drivers. Any petrol engine fed diesel normally will not run, and so the driver stops and the harm stops with them. A diesel fed petrol generally starts, ticks over and drives away as if nothing has happened, whilst your pump wears. Running doesn't mean fine.
Myth: "Add some two-stroke oil and drive the car home." It's an outdated fix for a separate issue. It doesn't put back what petrol has weakened, and that petrol is still inside the tank afterwards.
"Drain it yourself and you are sorted" — a myth, since after it's been running some petrol lies in the fuel filter and lines, ready to go straight back through the pump on the next start. And, a can of petrol filled by the kerbside is genuinely hazardous.
Why petrol in a diesel occurs at all
On purpose? Never. Through carelessness? Rarely, if ever. The petrol nozzle is the slimmer of the two and slides into a diesel filler with almost no resistance; a diesel nozzle generally won't go into a petrol car at all. The forecourt makes it easy, and the error runs one way.
The moment habit stops matching the vehicle is the moment it happens. A new motor, a hire car or a courtesy car. Households running one of each, petrol and diesel. A familiar forecourt with the pumps in a different order. A rushed fill on the way to Brockholes with a train to catch. Years of petrol vehicles behind you, a diesel Volkswagen Passat in front of you on the forecourt for its first tank — that is when. Your hand repeats what it has always done when you add rain, a phone call or a back seat full of kids.
Town End people: how to avoid petrol in a diesel next time
- The label is what counts, so check the petrol pump rather than the colour: in the UK unleaded handles are normally green and diesel black, but not on each forecourt.
- Plenty of cars state the fuel type inside the filler flap or on the cap, so check there on your first fill in any vehicle you do not know.
- One of each in the home? Label the key to your diesel — a coloured fob, a sticker — because intending to remember is not enough.
- "Diesel", aloud, before you lift the nozzle — every time a new or hired car gets its first tank. It seems daft. It works.
- Tuck your phone away. This is an easy mistake to make while you're thinking about something else.
- Add-on devices are available for cars without one, and some diesels come with a filler that will not take a petrol nozzle. Helpful — but a safety net only, never a reason to stop checking the label.
- As soon as you realise, stop: less petrol in that tank means a weaker mix. What to do next does not change, though — still do not fire it up.
Petrol already in a diesel around Town End? Begin here
In that case, there's just a short order of things. Starting it is out, and so is turning on the ignition. Still at the forecourt, at Murco or anywhere else? Ask the attendants to help you roll it away from the petrol pump. Phone 0333 366 0103 next, with three answers — your fuel, the approximate quantity, and whether it has run.
If it was AdBlue instead of petrol, say so. That's a separate problem — corrosion and deposits and not lost lubrication — and it has its own page for Town End.
What makes one Town End petrol in a diesel task cost more than the next
There is no honest single quote for this, since the four scenarios above are four different tasks. The situation itself does most of the work of moving the cost. Two things come after that: the petrol that went in as a share of what your tank takes, then the spot the vehicle is in and whether a van can reach it safely.
Three questions come first, before quoting, instead of after — what was put in, how much, has it run — and this is the reason. The answers change a range into a straight figure.
About Town End itself
Town End is a village situated in a riverside setting in West Yorkshire, with a mix of detached housing and a population of around 1171 residents. Town End sits at an elevation of 215 metres, close to nearby places such as Wooldale, Thongsbridge, and Lydgate. Town End is located near the city of Wakefield, approximately 13.4 miles away, and is around 158.9 miles from London.
Fuel drain cover in Town End and across West Yorkshire
Petrol in diesel calls in Town End — part of the HD postcode area — go to vans that likewise cover the spots round it, Wooldale, Thongsbridge and Lydgate among them. No need to bring your vehicle to us. Forecourts, supermarket car parks, lay-bys and your own drive are all places where we work.
Town End: still at the petrol pump?
Then you are in the best place there is. Ring, and keep it turned off.