Petrol in a Diesel Car in Cliffe: How Worried Should You Be?
Unstarted? Then less worried than you likely are. Petrol sitting in a diesel tank does nothing to the motor till something draws it through the system — the ignition priming the pump, your starter, or the drive itself. So the truthful answer to the first question everyone in Cliffe asks, "have I ruined it?", is generally no. Petrol in Diesel is who to ring, with the engine kept off, so it remains that way. Further down, you will find what petrol actually does inside a diesel, how far it might have gone, and how to stop it happening to you a second time.
What petrol in a diesel does to the engine
On its way through a motor, diesel has two tasks. It lubricates first, and after that does it burn. Made to extremely fine clearances, the injectors and your pump rely on your diesel flowing through them to stop their surfaces wearing against one another.
Poorly at the first, not at all at the second: that is petrol. The rattling comes from petrol being designed not to ignite when compressed, which is precisely the opposite of what a diesel needs. On top of that it is thinner than diesel, it strips away the protection the fuel system depends on, and any pump working on that blend is wearing itself.
Combined, those leave the shape of the trouble clear. The harm is done by movement, not by contact. Where the petrol is only inside that tank, it's a fault of fuel, nothing more. A pump that has been running on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds moves on with your fuel to your injectors downstream.
Cliffe, petrol in a diesel: four situations, from mild to major
Fuelled up, never started. The best case there can be. Only that tank has petrol in it, so the job is clearing your tank and cleaning the fuel system where the car stands. This situation can only truly take place at a forecourt: anywhere else, the car got there by being driven.
Ignition on, or started for a moment. Once primed, your system has drawn petrol out of the tank up to the fuel filter and the fuel lines. Still generally straightforward: drain, flush, and the fuel filter seen to.
A few miles driven, and the pump has spent each of them running on weakened fuel. Tank, lines, filter, then clean fuel put through the entire circuit: that's this work, and the way the vehicle was driven counts as much as the mileage. On the school run to Great Harwood St Bartholomew's Parish Church of England Voluntary Aided Primary School, the mileage is short. Any mileage on the M65, under 3 miles from Cliffe, means the motor has worked hard throughout, and a run to Preston, under 15 miles away, is a very different task too.
It protested, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone ragged. That's the motor telling you its fuel no longer is acting like diesel. Stop on the spot — on the verge on Hindle fold Lane, at the kerb, down a side road — and don't move it again. Permanent damage is very rare when a car is pulled over quickly, and the drain and flush that still come first deal with it.
Petrol in a diesel myths Cliffe people hear
"Top it up the rest of the way with diesel and it will be fine" — a myth. It will not. Nothing is removed by topping up — you're left with a fuller tank, still the same mix. That advice supposes a diesel fuel system handles petrol by percentage. It does not.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. More precise components and higher pressure are the way a newer diesel runs its fuel, and that makes the protection count more, not less.
The myth that catches people out: if it starts and drives, it must be unharmed. Feed diesel to a petrol engine and it usually will not run, so the driver stops — and the harm stops with them. A diesel fed petrol generally starts, ticks over and drives away as though nothing has happened, while your pump wears. Running doesn't mean fine.
Myth: "Add some two-stroke oil and drive the car home." It is an outdated workaround for a different fault. That petrol is still in your tank after that, and what it has diluted is not put back.
Once the engine has run, part of the petrol is in your filter and your lines, not your tank — and your next start pulls it right back through your pump. So the myth "drain that tank yourself and you are sorted" doesn't hold. Emptying petrol into a can at the roadside is also genuinely hazardous.
Why petrol in a diesel takes place so easily
On purpose? Never. Through carelessness? Seldom, if ever. One way only, since of the nozzles: the narrower petrol one slides inside a diesel filler with almost no resistance, whereas the diesel one mostly won't fit a petrol vehicle. That's how the forecourt makes it easy.
It occurs when routine and your car stop matching. Courtesy car, hire car, or a vehicle that's brand new. Two vehicles on one drive, one petrol, one diesel. The pumps in a different order on a familiar forecourt. A train to catch, and a hurried fill en route to Langho. Years of petrol cars behind you, a diesel Renault Megane in front of you at the forecourt for its first tank — that is when. Your hand does what it has always done when you add rain, a phone call or a back seat full of kids.
Cliffe people: how to prevent petrol in a diesel next time
- Not every forecourt in the UK follows green for unleaded and black for diesel, even if most usually do. Check the petrol pump's label; the colour is just a clue.
- Plenty of vehicles state the fuel type inside your filler flap or on the cap, so check there on your first fill in a motor you don't know.
- Good intentions do less than a sticker or a fob in a bright colour on the diesel's key if a home has one of each. So mark it.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" out loud before you take the nozzle off the pump. It sounds silly and it does the trick.
- Mistakes like this are simple to make whilst your mind is on something else, so your phone goes away.
- Add-on devices are available for vehicles without one, and some diesels come with a filler that won't accept a petrol nozzle. Useful — but a backstop at best, never a reason to stop checking the label.
- Less petrol means a weaker mixture, and so stop as soon as you notice — though remembering that your next step is unchanged. It is still not to fire it up.
Cliffe: already put petrol in a diesel?
Then, there's just a short order of things. Starting it is out, and so is turning on your ignition. If you are still at the forecourt — Morrisons or anywhere else — ask the attendants to help you push the vehicle away from the petrol pump. Next, 0333 366 0103. We'll ask what got in, roughly how much, and if it has been run.
Corrosion and deposits form the problem with AdBlue, whereas petrol brings lost protection. So if it was AdBlue, say so — and read its own Cliffe page.
What makes one Cliffe petrol in a diesel job cost more than the next
The four situations above are four separate tasks, so no single price for this would be honest. What moves the cost is mostly which of them you're in. Two things follow that: the petrol that was put in as a share of what your tank holds, then the spot your car is in and whether a technician can get to it safely.
Three questions come first, before quoting, instead of after — what was put in, how much, has it run — and that is the reason. Those answers change a range into a straight figure.
About Cliffe and where it is
Cliffe is a suburban area in Lancashire, situated inland at an elevation of 166 metres, approximately 12 miles from Preston. Cliffe forms part of a larger residential area, with nearby places including Lower Fold, Hindle Fold, and Great Harwood. Cliffe has a population of around 2843 people, predominantly living in terraced housing. Cliffe is located in the North West region of England, about 184.6 miles from London.
Across Lancashire and around Cliffe: fuel drain cover
Cliffe sits in the BB postcode area, and our teams that answer petrol in diesel call-outs there work the locations near it as well — Lower Fold, Hindle Fold and Great Harwood among them. We drain where the vehicle is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
At the pump around Cliffe, still?
No position is better: that is where you now are. Keep it switched off, and ring.