Should You Worry? Petrol in a Diesel Car in Pontardawe
Less than you likely are, provided it has not been started. Everyone around Pontardawe starts with "have I ruined it?", and the fair answer is usually no: petrol resting in the tank of any diesel stays harmless until priming, cranking or driving pulls it into your fuel system. Keep it that way: leave your engine off and call Petrol in Diesel. Read on for three things: the effect petrol has inside a diesel engine, the signs of how far it has spread, and the way to make sure you don't do it again.
Your engine and petrol in a diesel: what happens
Passing through a motor, diesel is doing two things at the same time. Before it ignites, it lubricates — then it combusts. Very fine gaps are built into the injectors and your high-pressure pump, and only the diesel running through stops their surfaces grinding together.
Of these two jobs, petrol manages the first badly and the second not at all. Being less viscous than diesel, petrol strips out the protection a fuel system needs, leaving a pump running on that mixture wearing itself. It's equally made to resist igniting under compression — the reverse of what a diesel needs — which is where you get the rattling.
Put those together and the shape of the issue is clear. The harm is done by circulation, not by contact. Where that petrol is only in that tank, it is an issue of fuel, nothing more. The start of a mechanical one is a pump that has been working on that petrol — and whatever a worn pump sheds travels on with your fuel to the fuel injectors beyond it.
Petrol in a diesel around Pontardawe: how bad is it? Four situations
The best case there can be: filled up, never started. The petrol is inside that tank and only that tank, and the job is a drain and a flush where your car stands. This is the one situation that can only really happen at a forecourt, as anywhere else your car has been driven to get there.
Started for a second, or only the ignition on. Petrol has left the tank and reached the fuel filter and the fuel lines, because your system has been primed. Drain, flush, deal with the fuel filter: still usually straightforward.
Driven a couple of miles. Now your pump has spent these miles labouring on thinned fuel. Tank, lines, filter, then fresh fuel run through the whole circuit: that is this work, and the way the car was driven matters as much as the mileage. The school run to the local primary school is one thing. A run as far as Swansea, under 10 miles away, is a very different job. So is any distance on the M4, under 5 miles from Pontardawe, where the engine has been running hard throughout.
Driven until it protested. Rattling, an uneven idle, smoke, a throttle that has gone soft. The fuel is not acting like diesel any more, and your engine is saying so. Stop where you are — on the verge on Dynevor Terrace, at the kerb, down a side road — and do not move it again. The fuel drain and flush-through still come first, and they take care of it: when a car is stopped quickly, permanent damage is very uncommon.
Petrol in a diesel stories Pontardawe motorists hear
Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. Nothing is removed by topping up — you're left with a bigger tank, still the same mix. A diesel fuel system doesn't accept petrol by percentage in the way that advice assumes.
"Current diesels can handle a little petrol" — a myth, and nearer the reverse. A current diesel sends its fuel through finer components at higher pressure, which makes the lubrication matter more, not less.
The myth that catches motorists off guard: if it starts and drives, it must be unharmed. Diesel in a petrol motor usually leaves a motor that will not run: the motorist stops, and so does the damage. Feed petrol to a diesel and it usually fires up, idles and pulls away like nothing happened — all while its pump wears. Being able to run isn't proof of being fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a distinct problem. None of what petrol thinned is put back by it — and later, that tank still contains the petrol.
"Drain it yourself and you're sorted" — a myth, since after it's been running some petrol lies in your filter and lines, waiting to go straight back through your pump at the next start. Emptying petrol into a can at the kerbside is also truly hazardous.
Why petrol in a diesel takes place at all
It's seldom carelessness, and nobody does it on purpose. A diesel nozzle generally won't fit a petrol motor, but the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error straightforward, and only in one direction.
It happens when habit and the vehicle stop matching. A new car, a hire car or a courtesy car. A household with one petrol and one diesel on the drive. A familiar forecourt with the pumps in a different order. Fuelling up in a rush on the way to Skewen, with a train to catch. Precisely the moment it takes place: after years of driving petrol, someone fills a diesel Volkswagen Golf for the first time. Your hand does what it has always done when you add rain, a phone call or a back seat full of children.
Avoiding petrol in a diesel next time you fill up around Pontardawe
- Not every forecourt in the UK keeps to green for unleaded and black for diesel, even if most generally do. Read the pump's label; the colour is just a hint.
- Check the filler flap. Many motors state the fuel inside the flap or on the cap. Look at it on the first fill in a vehicle you do not know.
- Label the key. In a home with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of meaning to remember.
- "Diesel", aloud, before you pick up the nozzle — each time a new or hired car needs its first tank. It seems daft. It works.
- Thinking about something else is when this becomes an easy mistake to make, so tuck the phone away and keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler designed to refuse a petrol nozzle, and add-on devices exist for cars without one. They are a safety net, not a reason to stop checking the pump.
- The moment you notice, stop: less petrol inside your tank makes a thinner mix. What to do next does not change, though — still do not start the vehicle.
Already put petrol in a diesel around Pontardawe?
Short and simple, then, is the order of things. Starting it is out, and so is switching on the ignition. The attendants at the forecourt — whether at Tesco itself or wherever you filled up — will usually help roll it clear of the petrol pump if you ask. Then ring 0333 366 0103 and tell us what got in, about how much, and whether it's run.
If it was AdBlue instead of petrol, say so. That is a different issue — corrosion and deposits instead of lost protection — and it has its own page for Pontardawe.
Pontardawe petrol in a diesel tasks: why one costs more than another
The four scenarios above are four different jobs, so no single price for this would be honest. Which of them you are in is chiefly what shifts the cost. Where the vehicle is counts too, and whether a technician can safely reach it, after the ratio of petrol to what the tank takes.
That is why our engineers ask three queries before costing instead of after: what got in, how much, and if it's run. Their replies are what change a range into one firm number.
About Pontardawe, briefly
Pontardawe is a town situated on the River Tawe in south Wales, with a population of around 7699 people. Pontardawe sits at an elevation of 44 metres, near the communities of Gellygron, Alltwen, and Craig Llangiwg. Pontardawe is located close to Swansea, about 8 miles to the south, and is characterized by its semi-detached housing stock. Pontardawe occupies a riverside setting, with the town's landscape shaped by the River Tawe.
Across Neath Port Talbot and in Pontardawe: fuel drain cover
Pontardawe waits in the SA postcode area, and our teams that answer petrol in diesel calls there work the places near it as well — Gellygron, Alltwen and Craig Llangiwg among them. No need to move the car to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all locations we drain.
At the pump in Pontardawe, still?
Then, you couldn't be in a better position. Keep it off. Phone.