How Worried Should You Be? Petrol in a Diesel Car in Eden Park
Probably less than you already are — provided no one has started the car. Till your ignition primes the pump, your starter cranks, or the car is driven, petrol in a diesel tank just rests there and does nothing. Which means the truthful reply to that first Eden Park query — "have I wrecked it?" — usually no. To keep it like that, ring Petrol in Diesel then leave your motor alone. What petrol actually does to a diesel, how to judge how far it's gone, and how to keep it from happening a second time: that's the remainder of this page.
The motor and petrol in a diesel: what goes on
Diesel does two tasks on its way through a motor. It protects first, and after that does it burn. Extremely fine gaps are built into the injectors and the high-pressure pump, and only your diesel flowing through stops their surfaces grinding together.
Badly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips away the protection a fuel system needs, so a pump running on the blend to wear itself. It is also made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the clattering.
Seen together, they make clear what shape the issue has. The harm is done by movement, not by contact. Any tank with petrol in it is a fuel issue. A pump that has been labouring on that petrol is the start of a mechanical one, and whatever a worn pump sheds travels on with your fuel to the fuel injectors downstream.
Petrol in a diesel in Eden Park: how serious is it? Four cases
Fuelled up, not once started. The best case there is. Only the tank has petrol in it, so the job is emptying that tank and rinsing the system where your car sits. This situation can only truly take place at a forecourt: anywhere else, the vehicle got there by being driven.
The ignition switched on, or a brief start. With the system primed, your lines and filter now contain petrol that came from your tank. That's usually still an easy job — a drain, a flush, and your filter dealt with.
Your pump has worked a couple of miles on weakened fuel — that is what driving it does. Tank, lines, filter, then clean fuel put through the entire system: that's the work, and the way the vehicle was driven counts as much as the mileage. The school run to Unicorn Primary School is one matter. Any miles on the M25, under 10 miles from Eden Park, means the engine has worked hard throughout, and a run to Westminster, under 10 miles away, is a very different task too.
It complained, and only then stopped: smoke, rattling, a throttle gone soft, an idle gone lumpy. The motor is telling you your fuel is no longer acting like diesel. Whether it's the verge on Tonge Close, a lay-by or a side street, stop where you are then leave it. A vehicle stopped quickly very rarely has lasting damage, because the fuel drain and the flush-through, which still go first, sort it out.
What Eden Park motorists get told about petrol in a diesel — and the myths in it
False: topping up to full with diesel makes it fine. It does not. Nothing is removed by topping up — you're left with a bigger tank, still the same mix. A diesel fuel system does not tolerate petrol by percentage in the way that advice supposes.
If anything, the reverse holds. Myth: "A current diesel can cope with a bit of petrol." At higher pressure, through finer components: that is how a modern diesel handles its fuel, and so the protection matters more, not less.
"It starts, it drives, and so there is no harm" — the myth that catches more people than any other. Diesel in a petrol motor usually leaves a motor that will not run: the driver stops, and so does the harm. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump wears. Being able to run isn't the same as being fine.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a separate issue. What petrol has thinned remains weakened, and that petrol remains in the tank anyway.
Myth: "Drain your tank yourself and you are sorted." After your engine has been run, some of that petrol is no longer inside the tank: it is in the fuel filter and the fuel lines, and it goes straight back through your pump at your next start. Clearing petrol into a can at the roadside is also really risky.
Why petrol in a diesel occurs so easily
Nobody does it on purpose, and it is seldom carelessness. One way only, because of the nozzles: the narrower petrol one slides inside a diesel filler with almost no resistance, whereas the diesel one generally won't fit a petrol motor. That is how the forecourt makes it simple.
The moment routine stops matching the vehicle is the moment it takes place. Any car that is new to you — hired, on loan as a courtesy car, or brand new. A household with one petrol and one diesel on the drive. A well-known forecourt with the pumps in a different order. Fuelling up in a rush en route to the nearest station, with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is exactly the moment it takes place. With rain, a call coming in, or a car full of children to deal with, your hand simply does what it has always done.
Preventing petrol in a diesel next time you fill up around Eden Park
- The label is what matters, so read the petrol pump rather than the colour: in the UK unleaded handles are usually green and diesel black, but not on every forecourt.
- The first fill in a strange motor is the time to check the filler flap — on it, or on the cap, many motors state the fuel they take.
- Label the key. In a household with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of intending to remember.
- It sounds daft and it works: on your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the petrol pump.
- Tuck the phone away. This is an easy mistake to make while you are thinking about something else.
- Some diesels have a filler built to block a petrol nozzle, and devices you can add exist for vehicles without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop reading the pump.
- As soon as you notice, stop: less petrol inside your tank means a weaker blend. What to do next does not change, though — still do not crank it.
Put petrol in a diesel in Eden Park already?
Short and simple, then, is the order of things. Leave it unstarted, with your ignition off as well. If you're still at the forecourt — Esso or anywhere else — ask the staff to help you push it away from the petrol pump. Next, 0333 366 0103. We'll ask what was put in, roughly how much, and if it has been run.
Corrosion and deposits are the issue with AdBlue, where petrol means lost lubrication. So if it was AdBlue, say so — and see its own Eden Park page.
Why one petrol in a diesel job in Eden Park costs more than another
There is no fair single quote for this, since the four scenarios above are four different tasks. The situation itself does most of the work of moving the cost. Two things follow that: the petrol that went in as a proportion of what your tank holds, then the spot the car is in and whether a technician can get to it safely.
Three questions come first, before any quote, rather than after — what went in, how much, has it run — and this is the reason. With the answers, there is a straight figure instead of a range.
About Eden Park itself
Eden Park is a suburban area in Greater London, situated near the River Beck, with Upper Elmers End and Park Langley to the east. Eden Park sits at an elevation of around 51 metres, within a short distance of central London. Eden Park is characterized by its terraced housing and residential community, with Monks Orchard nearby. Eden Park is located approximately 9 miles from London, with Westminster about 8.6 miles away.
Across Greater London and in Eden Park: fuel drain cover
Upper Elmers End, Park Langley and Monks Orchard are among the locations near Eden Park that the same vans work, answering petrol in diesel jobs across Eden Park's BR postcode area. The vehicle does not need to move to us: our technicians drain at a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
At the petrol pump around Eden Park, still?
The best place there is, then — that's where you are. Keep the vehicle switched off, and ring.