Should You Worry? Petrol in a Diesel Car in West Holywell
Probably less than you already are — provided nobody has started it. Everyone in West Holywell begins with "have I ruined it?", and the honest answer is usually no: petrol left inside your tank of any diesel remains harmless till priming, cranking or driving draws it into the system. To keep the car that way, phone Petrol in Diesel and leave your motor alone. The remainder of this page sets out what petrol actually does to a diesel, how to judge how far it has got, and how to make sure it does not happen to you again.
Inside the engine: what petrol in a diesel does
Diesel has two jobs on its way through a motor. Oiling comes before burning; it does both. Your high-pressure pump and the fuel injectors are built to very fine clearances, and the diesel passing through them is what keeps those surfaces from wearing down against one another.
Of those two tasks, petrol manages the first badly and the second not at all. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, so a pump running on the mixture wearing itself. It's also made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the rattling.
Combined, those leave the shape of the issue clear. Not contact but movement is what causes the harm. All a tank with petrol in it amounts to is a fuel fault. After your pump has been working on that petrol, a mechanical problem has begun: whatever is shed by a pump that is wearing down is carried downstream to the fuel injectors with the fuel.
West Holywell, petrol in a diesel: four cases, from mild to major
Fuelled, and never started: nothing beats it. Being at a forecourt is what makes this possible: elsewhere, the vehicle has been driven there to begin with. With the petrol held in that tank alone, it's drained and cleaned on the spot, and nothing more is needed.
The ignition turned on, or a short start. Petrol has left the tank and reached the fuel filter and the fuel lines, since the system has been bled. Still generally simple: drain, flush, and your filter seen to.
Your pump has worked a few miles on diluted fuel — that's what driving the vehicle does. How hard the vehicle was driven matters as much as how far, and the work covers the tank, the lines, your filter and clean fuel through the entire circuit. Short trips, like the school run to Backworth Park Primary School, are one matter. A run as far as Newcastle upon Tyne, under 10 miles away, is a very different task. So is any mileage on the A167(M), under 10 miles from West Holywell, where the engine has been running hard throughout.
Driven until it complained. Knocking, a ragged idle, smoke, a throttle that has gone soft. The fuel is not behaving like diesel any more, and the motor is telling you. Whether it is the verge on Church Road, a lay-by or a side street, stop where you are then leave it. A vehicle stopped soon very rarely has lasting damage, because the drain and the flush-through, which still go first, sort it out.
What West Holywell drivers get told about petrol in a diesel — and the stories in it
"Top it up the rest of the way with diesel and it'll be fine" — a myth. It will not. Nothing is removed when you top up — that tank just holds more of the same mixture. A diesel fuel system doesn't tolerate petrol by percentage in the way that advice presumes.
"Modern diesels can handle a little petrol" — a myth, and closer to the reverse. A current diesel runs its fuel through finer components at higher pressure, which makes the protection count more, not less.
This is the one that fools people. Myth: "If it starts and drives, there is no harm done." Diesel in a petrol motor generally means a motor that won't run: the motorist stops, and so does the harm. Nothing looks to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually does; meanwhile the pump wears. Fine and running are not the same at all.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a different issue. None of what petrol weakened is put back by it — and later, your tank still holds the petrol.
If your engine has run, part of the petrol is in the filter and your lines, not that tank — and the next start sends it straight back through your pump. So the myth "drain that tank yourself and you are sorted" does not hold. Besides, petrol drained into a can by the road is genuinely risky.
How does petrol in a diesel occur?
Carelessness is seldom the cause, and no one means to do it. The petrol nozzle is the narrower of the two and slips into a diesel filler with almost no resistance; a diesel nozzle mostly will not go into a petrol vehicle at all. The forecourt makes it simple, and the slip runs one way.
The moment routine stops matching the car is the moment it happens. Courtesy car, hire car, or a motor that is new. A household with one petrol and one diesel on the drive. The pumps in a different order on a familiar forecourt. A rushed fill on the way to Seaton Delaval with a train to catch. Years of petrol cars behind you, a diesel Volkswagen Passat in front of you at the forecourt for its first tank — that's when. Throw in rain, a phone call or a back seat full of kids, and the hand does what it has always done.
How to avoid petrol in a diesel on your next fill-up in West Holywell
- The label is what matters, and so read the pump rather than the colour: in the UK unleaded handles are normally green and diesel black, but not on every forecourt.
- Check the filler flap. Plenty of vehicles state the fuel inside the flap or on the cap. Look at it on the first fill in any motor you don't know.
- Good intentions count for less than a sticker or a fob in a bright colour on the diesel's key if a home has one of each. So label it.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the petrol pump. It seems silly and it does the trick.
- Tuck the phone away. This is an easy mistake to make while you're thinking about something else.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to block a petrol nozzle, and add-on devices exist for cars without one. They are a safety net, not a reason to stop reading the petrol pump.
- The moment you notice, stop: less petrol in that tank means a weaker mixture. What to do next doesn't change, though — still do not start the vehicle.
Already put petrol in a diesel in West Holywell?
The order of things is short, then. Starting it is out, and so is turning on the ignition. If you're still on the forecourt — BP or anywhere else — ask the staff to help you roll it clear of the petrol pump. Next, 0333 366 0103. We will ask what got in, about how much, and if it's been run.
Say so if it was AdBlue instead of petrol: it's a different problem, with its own page for West Holywell, because AdBlue brings corrosion and deposits instead of lost lubrication.
West Holywell petrol in a diesel tasks: why one costs more than another
There's no honest single quote for this, since the four situations above are four different tasks. The scenario itself does most of the work of moving the cost. The share counts next, meaning how much of your tank is petrol, followed by the location of the vehicle and whether reaching it is safe for a van.
Before any quote, not after, we ask three questions: your fuel that went in, its quantity, and whether it's run. That is why. Given the replies, you get a straight figure rather than a range.
About West Holywell itself
West Holywell is a small locality situated on the riverside in Tyne and Wear, with a relatively low elevation of 47 metres. West Holywell lies near the cities of Newcastle upon Tyne and the surrounding towns of Backworth, East Holywell, and Shiremoor. West Holywell is characterised by its predominantly detached housing stock, reflecting its residential nature. West Holywell is located approximately 251 miles north of London, in the North East region of England.
West Holywell and Tyne and Wear: where our fuel drain cover reaches
Backworth, East Holywell and Shiremoor are among the spots around West Holywell that the same teams work, answering petrol in diesel call-outs across West Holywell's NE postcode area. A forecourt, a supermarket car park, a lay-by or your own driveway are all locations we drain, and the vehicle does not need to come to us.
West Holywell: still at the pump?
Then you are in the best position there is. Call, and leave it switched off.