Should You Worry? Petrol in a Diesel Car in Hawes
Likely less than you are now — as long as no one has started the car. Petrol resting in a diesel tank does nothing to the motor until something draws it through the system — the ignition priming the pump, your starter, or driving on its own. So the truthful answer to the first query anyone around Hawes asks, "have I ruined it?", is normally no. Petrol in Diesel is who to call, with the motor left off, so it stays that way. What petrol really does to a diesel, how to gauge how far it's travelled, and how to stop it from happening a second time: that is the remainder of this page.
Your engine and petrol in a diesel: what happens
On its way through an engine, diesel has two jobs. It ignites, and before it ignites it protects. What keeps the surfaces inside the high-pressure fuel pump and the fuel injectors from wearing against each other is your diesel passing through them — they're made to extremely fine gaps.
The second task petrol does not do at all, and the first it does poorly. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, so a pump on that mixture to wear itself. It's also made to resist igniting under compression — the reverse of what a diesel needs — which is where you get the rattling.
Put these together and the shape of the trouble is plain. Not contact but circulation is what causes the harm. A tank with petrol in it is a fuel issue. Whatever a worn pump sheds travels on, borne by your fuel, into your injectors downstream, which is why a pump that has worked on the petrol is where a mechanical fault starts.
How bad is petrol in a diesel? Four scenarios our technicians see in Hawes
Filled up, and not started: no case is better. Being at a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With the petrol kept in your tank alone, it's drained and rinsed right where it stands, and nothing more is needed.
Your ignition switched on, or a brief start. With the fuel system primed, the lines and filter now hold petrol that came from the tank. That is generally still a simple job — a drain, a flush, and the fuel filter seen to.
Your pump now spent a few miles on diluted fuel — that is what driving the vehicle meant. The work is your tank, the fuel lines, the filter and clean fuel through the whole circuit, and how hard your car was driven counts as much as how far. Driving the kids to Hawes Primary School is one kind of trip. Any miles on the M6, under 25 miles from Hawes, means the engine working hard throughout, and a run to Ripon, under 50 miles away, makes a very different task too.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone lumpy. That is the motor telling you its fuel no longer is acting like diesel. Whether it is the verge on A684, a lay-by or a side road, stop where you are and leave it. A vehicle stopped quickly very seldom has permanent damage, because the drain and the flush, which still go first, sort it out.
What Hawes motorists get told about petrol in a diesel — and the myths in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it'll be." Nothing comes out when you top up — your tank just carries more of the same mixture. Percentage is not how a diesel fuel system copes with petrol, however much that guidance presumes.
Myth: a modern diesel copes with a bit of petrol. Rather, the reverse. A modern diesel runs its fuel through more precise components at higher pressure, which makes the protection matter more, not less.
"It starts, it drives, and so no harm done" — the myth that trips up most motorists than any other. Any petrol engine fed diesel normally won't run, so the driver stops and the damage stops with them. Feed petrol to a diesel and it normally fires up, idles and pulls away like nothing has happened — all the while its pump wears. Being able to run isn't the same as being fine.
An outdated workaround for a distinct problem is behind this one. Myth: "Add some two-stroke oil and drive the car home." It doesn't put back what petrol has thinned, and that petrol is still inside the tank later on.
"Drain it yourself and you're sorted" — a myth, since after it has been running some petrol lies in your filter and lines, ready to go right back through the pump at your next start. Besides, petrol emptied into a can by the road is truly dangerous.
Why petrol in a diesel happens so easily
Nobody does it on purpose, and it is seldom carelessness. A diesel nozzle mostly won't fit a petrol vehicle, but the slimmer petrol nozzle goes into the filler of a diesel almost without resistance — so forecourts make this one error straightforward, and only in that direction.
When habit and your car stop matching, it happens. Courtesy car, hire car, or a motor that is new. One petrol and one diesel on the drive of the same household. A well-known forecourt with the pumps in a different order. A hurried fill on the way to Garsdale 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. With rain, a call coming in, or a car full of children to deal with, your hand just does what it has always done.
Hawes drivers: how to avoid petrol in a diesel next time
- A green handle for unleaded and black for diesel is usual in the UK — but not on each forecourt. Go by the label on the petrol pump, not the colour.
- The first fill in a strange car is the time to check your filler flap — inside it, or on the cap, plenty of cars state the fuel to use.
- Good intentions do less than a sticker or a fob in a bright colour on the diesel's key if a household has one of each. So mark it.
- Before the nozzle leaves the pump the first time you fill a hired or new vehicle, say "diesel" out loud. Silly, yes, yet it does the trick.
- While you are thinking about something else, this is an easy mistake to make — so put your phone away.
- Up to a point, a misfuel inhibitor helps: some diesels come with a filler designed to block a petrol nozzle, and add-on devices are available for the remainder. Count it as a safety net, and keep reading the pump.
- The moment you notice, stop: less petrol in the tank makes a thinner mix. What to do next does not change, though — still don't crank it.
Already put petrol in a diesel in Hawes?
Then, there's only a short order of things. Starting it is out, and so is switching on the ignition. The staff on the forecourt — whether at Gulf itself or wherever you filled up — will normally help roll it clear of the petrol pump if you ask. What got in, roughly how much, and if it has run: tell us those when you call 0333 366 0103.
If it was AdBlue instead of petrol, say so. That is a separate fault — corrosion and deposits instead of lost lubrication — and it has its own page for Hawes.
Hawes petrol in a diesel jobs: why one costs more than another
There's no honest single price for this, since the four situations above are four different tasks. Which of them you're in is chiefly what shifts the cost. The ratio matters next, meaning how much of your tank is petrol, and then the position of the vehicle and whether reaching it is safe for a technician.
What got in, how much, and if it's run — three questions we ask before quoting, not after, for precisely that reason. The replies turn a range into a straight figure.
About Hawes and its setting
Hawes is a small village situated in the Yorkshire Dales, on the banks of the River Ure in North Yorkshire. Hawes sits at an elevation of 237 metres, surrounded by picturesque countryside, and is located near the villages of Gayle, West End, and Sedbusk. Hawes has a population of approximately 523 residents, living in predominantly semi-detached housing. Hawes is 29.5 miles from the city of Ripon and 211.5 miles from London.
Across North Yorkshire and in Hawes: fuel drain cover
Gayle, West End and Sedbusk are among the places around Hawes that the same teams work, answering petrol in diesel jobs across Hawes's DL postcode area. The car doesn't need to come to us: our technicians drain on a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
At the pump around Hawes, right now?
The best position there is, then — that is where you are. Keep it off. Call.