Should You Worry? Petrol in a Diesel Car in Ushaw Moor
Provided it has not been started, you can worry far less than you probably are. Petrol sitting in a diesel tank does nothing to your engine till something draws it through your fuel system — your ignition priming your pump, the starter, or the drive itself. So the honest answer to the first question anyone around Ushaw Moor asks, "have I wrecked it?", is normally no. Leave the motor off then ring Petrol in Diesel — that is how you keep it like that. What petrol really does to a diesel, how to gauge how far it has gone, and how to stop it from happening again: that is the rest of this page.
Petrol in a diesel: what does it do to your engine?
On its way through a motor, diesel does two jobs. It combusts, and before it burns it protects. What keeps the surfaces inside the high-pressure fuel pump and the fuel injectors from grinding against each other is the diesel flowing through them — they're made to very fine tolerances.
The second job petrol doesn't do at all, and the first it does badly. A pump running on a petrol mix is wearing itself out, because petrol is thinner than diesel and takes away the lubrication the fuel system relies on. Petrol is also made to resist igniting under compression — the opposite of what a diesel needs from its fuel — and that is where the rattling comes.
Put these together and the shape of the trouble is plain. It is movement that does the harm, not contact. Where that petrol is only in the tank, it is an issue of fuel, nothing more. Once the pump has been working on that petrol, a mechanical problem has begun: anything shed by a pump that's grinding is carried downstream to your injectors with your fuel.
Petrol in a diesel around Ushaw Moor: how serious is it? Four cases
The best case there can be: filled up, never started. Being at a forecourt is what makes this possible: elsewhere, the car has been driven there to begin with. With the petrol kept inside your tank alone, it's emptied and flushed on the spot, and nothing more is needed.
Started for a second, or only your ignition on. Once primed, your system has drawn petrol from that tank as far as the filter and your lines. Usually little more than emptying, rinsing and sorting the fuel filter, and so still simple.
Those few miles on the road were the pump running on fuel weakened by petrol throughout. The work is that tank, the lines, the fuel filter and fresh fuel through the whole system, and how hard the vehicle was driven matters as much as how far. Driving the kids to Silver Tree Primary School and Nursery is one sort of trip. Very different again: a run to Durham, under 3 miles away, or some distance on the A1(M), under 5 miles from Ushaw Moor, where the motor kept working hard.
It complained, and only then stopped: smoke, rattling, a throttle gone soft, an idle gone ragged. What you are hearing is the engine reporting fuel that no longer acts like diesel. Stop wherever you are — the verge on Station Road, a lay-by, a side street — and leave the vehicle there. The fuel drain and flush still come first, and they deal with it: when a car is pulled over quickly, lasting damage is very rare.
Ushaw Moor people and the petrol in a diesel myths they hear
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. A fuller tank of the same mix is all it gives, since topping up removes nothing. The idea behind that advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
Not so: a current diesel copes with a bit of petrol. Rather, the opposite. Finer components and higher pressure are the way a newer diesel runs its fuel, and that makes the lubrication count more, not less.
This is the one that catches people. Myth: "If it starts and drives, there's no damage done." Feed diesel to a petrol engine and it normally will not run, and so the driver stops — and the damage stops with them. Feed petrol to a diesel and it normally starts, ticks over and drives away as if nothing happened — all while its pump is wearing. Being able to run isn't proof of being fine.
Myth: "Add some two-stroke oil and drive it home." It is an outdated workaround for a different issue. It doesn't put back what petrol has weakened, and that petrol is still in that tank after that.
"Drain it yourself and you are sorted" — a myth, since after it has been running some petrol lies in your filter and lines, ready to go straight back through the pump at the next start. Besides, petrol emptied into a can by the road is genuinely hazardous.
Petrol in a diesel: how does it happen?
On purpose? Never. Through carelessness? Seldom, if ever. One way only, since of the nozzles: the narrower petrol one slips inside a diesel filler with almost no resistance, whereas the diesel one generally will not fit a petrol motor. That's how the forecourt makes it straightforward.
Habit and the vehicle falling out of step is when it takes place. A motor that is new to you — hired, on loan as a courtesy car, or brand new. One petrol and one diesel on the driveway of the same household. The pumps in a different order on a well-known forecourt. Fuelling up in a rush en route to Durham, with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is precisely the moment it takes place. Throw in a back seat full of children, a phone call or rain, and habit wins.
How to prevent petrol in a diesel on your next fill-up in Ushaw Moor
- The label is what counts, so read the pump rather than the colour: in the UK unleaded handles are usually green and diesel black, yet not on every forecourt.
- In a motor you do not know, look inside the flap over your filler or at the cap before your first fill: plenty of vehicles state the fuel type there.
- One of each in the household? Label your key to the diesel — a bright fob, a sticker — since meaning to remember is not enough.
- Before the nozzle comes off the petrol pump the first time you fill a hired or new car, say "diesel" out loud. Silly, perhaps, yet it works.
- Whilst you are thinking about something else, this is an easy mistake to make — so tuck the phone away.
- Add-on devices are available for cars without one, and some diesels come with a filler that won't take a petrol nozzle. Helpful — but a safety net at best, never a reason to stop checking the label.
- Stop as soon as you realise. Less petrol in the tank makes a thinner mix. It does not change what to do next, which is still not to crank it.
Put petrol in a diesel in Ushaw Moor already?
Short and simple, then, is the order of things. Don't crank it, and don't switch the ignition on. If you're still on the forecourt — Shell or anywhere else — ask the attendants to help you roll the car clear of the pump. Next, 0333 366 0103. We will ask what got in, roughly how much, and if it has been run.
Say so if it was AdBlue instead of petrol: it's a separate problem, with its own page for Ushaw Moor, because AdBlue brings corrosion and deposits instead of lost lubrication.
What makes one Ushaw Moor petrol in a diesel task cost more than the next
An honest single quote does not exist here: four situations, four separate jobs. Which of them you are in is mostly what moves your cost. Two things come after that: the petrol that was put in as a proportion of what that tank takes, then the spot the vehicle is in and whether our van can reach it safely.
Ahead of any quote, not after, come three queries: the fuel that got in, its volume, and if it's run. That is why. With the replies, there is a straight figure instead of a range.
About Ushaw Moor, briefly
Ushaw Moor is a village in County Durham, situated near the River Wear and close to the city of Durham. Ushaw Moor has a population of around 2697 people and is characterized by its terraced housing. Ushaw Moor sits at an elevation of 113 metres, with nearby places including Bearpark, New Brancepeth, and Alum Waters. Ushaw Moor is located approximately 2.5 miles from Durham city centre.
Ushaw Moor and Durham: where our fuel drain cover reaches
Ushaw Moor rests in the DH postcode area, and the vans that answer petrol in diesel call-outs there work the locations near it as well — Bearpark, New Brancepeth and Alum Waters among them. No need to move the car to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all spots we drain.
At the pump in Ushaw Moor, still?
Then you're in the best place there can be. Switched off it remains; then call.