Should You Worry? Petrol in a Diesel Car in Sherburn in Elmet
If it has not been started, worry far less than you probably are. Until the ignition primes the pump, the starter turns, or the car is driven, petrol in a diesel tank simply rests there and does no harm. Which makes the honest reply to the first Sherburn in Elmet query — "have I wrecked it?" — normally no. Petrol in Diesel is who to call, with your engine kept off, so it remains that way. Further down, this page sets out what petrol really 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 has two tasks. Lubricating comes before burning; it does both. The high-pressure pump and your injectors are built to very fine clearances, and your diesel passing through them is what keeps those surfaces from grinding against each other.
Of these two jobs, petrol handles the first badly and the second not at all. The clattering comes from petrol being made not to ignite when compressed, which is exactly the opposite of what a diesel needs. On top of that it is runnier than diesel, it strips away the protection the system depends on, and any pump running on such a blend is wearing itself.
Seen together, they make clear what shape the trouble takes. It is movement that causes the damage, not contact. Petrol in the tank is a fuel problem. After your pump has been labouring on that petrol, a mechanical problem has begun: whatever is shed by a pump that is wearing is carried onward to the injectors with your fuel.
Sherburn in Elmet, petrol in a diesel: four cases, from mild to major
The best case there is: filled up, never started. At a forecourt, and genuinely only there, that petrol is still confined to the tank — because anywhere else the car was driven to reach it. The task is emptying and flushing on the spot.
Started for a moment, or only your ignition on. The fuel system has been primed, so petrol has left the tank and got to the filter and your lines. Drain, flush, see to the filter: still normally straightforward.
Driven a couple of miles. Now your pump has spent those miles running on weakened fuel. The work is your tank, the lines, your filter and fresh fuel through the entire system, and how hard your car was driven counts as much as how far. The school run to Sherburn Hungate Primary School is one matter. Getting as far as Leeds, under 15 miles away, makes a very different task — as does any mileage on the A1(M), under 3 miles from Sherburn in Elmet, with your engine working hard the whole time.
It protested, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone ragged. The fuel isn't behaving like diesel any more, and the motor is saying so. Whether it is the verge on Moor Lane, a lay-by or a side road, stop there then leave it. A car stopped quickly very seldom has permanent damage, since the fuel drain and the flush, which still come first, sort it out.
What Sherburn in Elmet motorists get told about petrol in a diesel — and the myths in it
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. Nothing is removed when you top up — that tank simply holds more of the same blend. A diesel fuel system doesn't accept petrol by percentage in the way that guidance presumes.
Not so: a modern diesel copes with a bit of petrol. If anything, the opposite. A modern diesel sends its fuel through finer components at higher pressure, which makes the protection count more, not less.
The myth that catches drivers off guard: if it starts and drives, it must be unharmed. Feed diesel to a petrol engine and it usually won't run, and so the driver stops — and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually will; meanwhile the pump wears. Running doesn't mean fine.
An old workaround for a separate fault is behind this one. Myth: "Add some two-stroke oil and drive the vehicle home." That petrol is still inside the tank afterwards, and whatever it has diluted isn't put back.
"Drain it yourself and you're sorted" — a myth, since after it's been running some petrol lies in the fuel filter and lines, ready to go right back through the pump at the next start. Clearing petrol into a can at the roadside is also genuinely dangerous.
How does petrol in a diesel happen?
A careless moment is seldom the cause, and nobody means to do it. One way only, since of the nozzles: the slimmer petrol one slips inside a diesel filler with almost no resistance, whereas the diesel one generally won't fit a petrol motor. That's how the forecourt makes it straightforward.
Habit and your car falling out of step is how it takes place. Courtesy car, hire car, or a car that is brand new. Two cars on one driveway, one petrol, one diesel. Your usual forecourt, its pumps suddenly in a different order. A rushed fill en route to Sherburn-In-Elmet with a train to catch. The first fill-up in a diesel Renault Megane after years of driving petrol is exactly the moment it takes place. Your hand does what it has always done when you add rain, a phone call or a back seat full of kids.
Avoiding petrol in a diesel next time you fill up around Sherburn in Elmet
- The label is what matters, and so read the petrol pump rather than the colour: in the UK unleaded handles are usually green and diesel black, yet not on each forecourt.
- In a vehicle you don't know, look inside the flap over the filler or at the cap before your first fill: plenty of vehicles print the fuel there.
- Good intentions do less than a sticker or a fob in a vivid colour on your diesel's key if a household has one of each. So label it.
- Say it before you lift it. On the first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the petrol pump. It sounds silly and it works.
- While you're thinking about something else, this is an easy mistake to make — so put the phone away.
- Some diesels come with a filler designed to reject a petrol nozzle, and devices you can add are available for vehicles without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop reading the petrol pump.
- As soon as you realise, stop: less petrol inside the tank means a thinner mixture. What to do next does not change, though — still don't fire it up.
Put petrol in a diesel in Sherburn in Elmet already?
In that case, there's just a short order of things. Starting it is out, and so is turning on the ignition. Ask the attendants to help you push it away from the petrol pump if you are still at the forecourt, whether that's BP or somewhere else. Next, 0333 366 0103. We will ask what was put in, roughly how much, and if it has been run.
Corrosion and deposits form the problem with AdBlue, where petrol means lost lubrication. So if it was AdBlue, say so — and read its own Sherburn in Elmet page.
One petrol in a diesel task in Sherburn in Elmet costs more than another. Why?
The four scenarios above are four different jobs, so no single price for this would be honest. Which of them you are in is mostly what moves the cost. Two things follow that: the petrol that got in as a share of what the tank holds, then the spot your car is in and whether a van can get to it safely.
Before any quote, not after, come three queries: your fuel that got in, its volume, and if it has run. That is why. The replies change a range into a straight figure.
About Sherburn in Elmet, for a moment
Sherburn in Elmet is a village in North Yorkshire, situated inland at an elevation of 19 metres, approximately 12 miles from Leeds. Sherburn in Elmet has a mix of housing types, with semi-detached homes being predominant, and is located near other local places such as South Milford and Barkston Ash. Sherburn in Elmet is part of a wider network of communities in the region, with nearby Newthorpe also being a notable settlement.
Across North Yorkshire and in Sherburn in Elmet: fuel drain cover
Petrol in diesel calls around Sherburn in Elmet — part of the LS postcode area — go to vans that also cover the locations round it, South Milford, Barkston Ash and Newthorpe included. You need not bring your vehicle to us. Forecourts, supermarket car parks, lay-bys and your own drive are all spots where we work.
Sherburn in Elmet: still at the petrol pump?
The best spot there is, then — that's where you are. Turned off it remains; then call.