How Worried Should You Be? Petrol in a Diesel Car in Ravenhill
Far less than you likely are, if it hasn't been started. Everyone around Ravenhill starts with "have I wrecked it?", and the honest answer is usually no: petrol left in the tank of any diesel stays harmless until priming, cranking or driving draws it into your fuel system. Leave the engine off then call Petrol in Diesel — that is how you keep it that way. The remainder of this page explains what petrol really does to a diesel, how to judge how far it has got, and how to make sure it doesn't happen to you again.
What petrol in a diesel does to the motor
On its way through a motor, diesel has two jobs. It burns, and before it burns it lubricates. What keeps the surfaces inside the high-pressure pump and the injectors from wearing down against one another is the diesel passing through them — they're built to very fine clearances.
Badly at the first, not at all at the second: that is petrol. The clattering 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 runnier than diesel, it strips away the protection the system depends on, and any pump working on such a mixture is wearing itself.
The shape of the issue is plain once you put those together. Contact doesn't do the harm — circulation does. All a tank with petrol in it amounts to is a fuel fault. Once the pump has been labouring on that petrol, a mechanical fault has started: whatever is shed by a pump that is wearing down travels onward to the fuel injectors with the fuel.
Ravenhill, petrol in a diesel: four cases, from mild to major
Fuelled up, never started. The best case there can be. Just that tank has petrol in it, so the job is emptying the tank and cleaning the fuel system where the car stands. This scenario can only really happen on a forecourt: anywhere else, the vehicle got there by being driven.
Your ignition switched on, or a brief start. With the system primed, your lines and filter already contain petrol that came from that tank. Drain, flush, see to the filter: still normally simple.
A few miles driven, and the pump has spent each of them working on diluted fuel. The work is the tank, your lines, the fuel filter and fresh fuel through the whole circuit, and how hard the vehicle was driven matters as much as how far. Driving the kids to Redbrook Hayes Community Primary School is one kind of trip. A run as far as Lichfield, under 10 miles away, is a very different task. So is any distance on the M6 Toll, under 10 miles from Ravenhill, where the engine has been running hard the whole time.
Driven on until it complained — clattering, smoke, a ragged idle, a dead throttle. That is your engine telling you its fuel no longer is behaving like diesel. Stop on the spot — on the verge on Myatt Way, at the kerb, down a side road — and do not move it again. Permanent damage is very uncommon when a car is stopped quickly, and the fuel drain and flush that still go first sort it out.
Petrol in a diesel stories Ravenhill people hear
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 — that tank simply carries more of the same mixture. A diesel fuel system doesn't accept petrol by percentage in the way that advice assumes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. Protection counts more on modern diesels, not less, because their fuel runs through more precise components at higher pressure.
"It starts, it drives, so no harm done" — the myth that catches more drivers than any other. The driver of a petrol motor fed diesel usually has no choice but to stop, since it will not run, and the harm stops there. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually does; meanwhile your pump grinds. A running engine does not mean fine.
An outdated workaround for a different fault lies behind this one. Myth: "Add some two-stroke oil and drive the vehicle home." None of what petrol diluted is put back by it — and later, your tank still holds the petrol.
"Drain it yourself and you are sorted" — a myth, because after it's been running some petrol sits in the filter and lines, waiting to go right back through your pump at your next start. Clearing petrol into a can by the roadside is also genuinely dangerous.
How does petrol in a diesel occur?
On purpose? Never. Through carelessness? Rarely, if ever. A diesel nozzle mostly will not fit a petrol vehicle, yet the smaller petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake simple, and only in that direction.
It takes place when habit and the vehicle stop matching. Courtesy car, hire car, or a motor that is brand new. Two motors on one drive, one petrol, one diesel. A well-known forecourt with the pumps in a different order. A hurried fill en route to Rugeley Town with a train to catch. Precisely the moment it takes place: after years of driving petrol, a driver fills a diesel Volkswagen Golf for the first time. With rain, a call coming in, or children to deal with, the hand simply does what it has always done.
How to avoid petrol in a diesel on your next fill-up around Ravenhill
- Not every forecourt in the UK follows green for unleaded and black for diesel, even if most usually do. Read the petrol pump's label; the colour is only a clue.
- The first fill in a strange car is the time to check the filler flap — inside it, or on the cap, plenty of motors state which fuel they take.
- Label your key. In a home with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of intending to remember.
- Before the nozzle leaves the pump the first time you fill a hired or new car, say "diesel" out loud. Silly, yes, but it does the trick.
- Thinking about something else is when this becomes an easy mistake to make, and so tuck the phone away and keep your mind on the pump.
- Some diesels have a filler built to block a petrol nozzle, and devices you can add are available for vehicles without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop checking the petrol pump.
- Noticing it halfway? Stop there and then. A thinner blend follows from less petrol in your tank, but your next step remains the same: do not crank it.
Already put petrol in a diesel in Ravenhill?
Then, there's only a short order of things. Do not turn your ignition on, and don't crank it. Yet at the forecourt, at Esso or anywhere else? Ask the staff to help you push the car away from the petrol pump. Then phone 0333 366 0103 and tell us what was put in, about how much, and whether it's run.
Corrosion and deposits form the trouble with AdBlue, whereas petrol brings lost lubrication. So if it was AdBlue, say so — and see its own Ravenhill page.
Why one petrol in a diesel task in Ravenhill costs more than another
An honest single quote doesn't exist here: four scenarios, four separate tasks. The situation itself does most of the work of moving your cost. Two things come after that: the petrol that was put in as a proportion of what the tank takes, then the spot your car is in and whether a van can get to it safely.
Ahead of any quote, not after, we ask three queries: the fuel that got in, its amount, and whether it has run. That's why. Their answers are what turn a range into one firm number.
About Ravenhill and its setting
Ravenhill is a suburban area in Staffordshire, situated on the riverside at an elevation of 88 metres, with semi-detached housing being the predominant type of accommodation. Ravenhill lies approximately 6.3 miles from the city of Lichfield and is close to nearby places such as Brereton and Rugeley. Ravenhill is part of the wider West Midlands region, with London being around 114.9 miles to the south. Ravenhill has a population of around 5879 residents.
Fuel drain cover around Ravenhill and across Staffordshire
Brereton, Rugeley and Breretonhill are among the places near Ravenhill that the same vans work, answering petrol in diesel call-outs across Ravenhill's WS postcode area. Our engineers drain where your car is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it never needs to come to us.
Still at the petrol pump around Ravenhill?
No position is better: that's where you are. Switched off it stays; then ring.