Petrol in a Diesel Car in Woodburn: How Worried Should You Be?
Provided it hasn't been started, you can worry less than you probably are. "Have I ruined it?" is the first question everyone in Woodburn asks, and the truthful answer is generally no, because petrol resting in a diesel tank hurts nothing until it is drawn through your fuel system — by ignition priming, by your starter, or by being driven. Leave your motor off then phone Petrol in Diesel — that is how you keep it like that. What petrol actually does to a diesel, how to gauge how far it has gone, and how to stop it from happening a second time: that is the remainder of this page.
Petrol in a diesel: what does it do to the engine?
Diesel has two jobs on its way through a motor. Before it combusts, it protects — then it combusts. Designed to very fine gaps, your injectors and your pump depend on your diesel flowing through them to stop their surfaces wearing against one another.
Of these two tasks, petrol handles the first badly and the second not at all. A pump running on a petrol mix is wearing itself out, because petrol is runnier than diesel and takes away the lubrication the fuel system depends on. Petrol is also designed to resist igniting under compression — the opposite of what a diesel wants from its fuel — and that is where the clattering starts.
Combined, those make the shape of the issue clear. Contact does not do the damage — circulation does. Petrol in a tank is a fuel problem. Once your pump has been labouring on that petrol, a mechanical issue has started: anything shed by a pump that is wearing down travels onward to the injectors with your fuel.
How bad is petrol in a diesel? Four scenarios our engineers see around Woodburn
The best case there is: filled up, never started. That petrol is inside that tank and just the tank, and the task is a drain and a flush where your car sits. This is the one scenario that can only really take place at a forecourt, as anywhere else the car has been driven to get there.
Ignition on, or started for a moment. The fuel system has been primed, so petrol has left that tank and got to the fuel filter and the fuel lines. That is usually still a simple task — a drain, a flush, and the filter dealt with.
Those few miles driven were the pump labouring on fuel thinned by petrol the whole way. Tank, lines, filter, then fresh fuel run through the entire system: that's the work, and the way the car was driven counts as much as the distance. Driving the children to the local primary school is one sort of trip. A run as far as Edinburgh, under 10 miles away, is a very different task. So is any miles on the M8, under 15 miles from Woodburn, where your engine has been running hard the whole time.
Driven on till it protested — knocking, smoke, an uneven idle, a dead throttle. The motor is telling you your fuel is no longer behaving like diesel. Leave it wherever it has stopped: a lay-by, a side street, the verge on Woodburn Bank. What goes first is still the fuel drain and flush-through, and that deals with it, with permanent damage very unusual when a vehicle is stopped soon.
Petrol in a diesel myths Woodburn motorists 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 you get, since topping up removes nothing. That advice supposes a diesel fuel system handles petrol by percentage. It doesn't.
Not so: a modern diesel copes with a bit of petrol. If anything, the opposite. 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 no harm done" — the myth that trips up more drivers than any other. A petrol engine fed diesel normally will not run, and so the motorist stops and the damage stops with them. While the pump wears, a diesel fed petrol usually starts, ticks over and drives away as if nothing has happened. Running is not the same as fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a different issue. What petrol has diluted remains thinned, and the petrol stays in the tank regardless.
"Drain it yourself and you're sorted" — a myth, because after it has been running some petrol lies in the filter and lines, ready to go straight back through your pump on the next start. It's also really hazardous to drain petrol into a can at the roadside.
Why petrol in a diesel takes place at all
No one does it on purpose, and it is rarely carelessness. A diesel nozzle mostly won't go into a petrol vehicle, but the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error easy, and just in that direction.
It happens when habit and your car stop matching. Courtesy car, hire car, or a vehicle that is new. A household with one petrol and one diesel on the driveway. A well-known forecourt with the pumps in a different order. Fuelling up in a rush en route to Eskbank, with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is exactly the moment it happens. With rain, a call coming in, or children to deal with, your hand simply does what it always has.
Next time you fill up in Woodburn: preventing petrol in a diesel
- A green handle for unleaded and black for diesel is normal in the UK — but not on each forecourt. Go by the label on the pump, not the colour.
- Inspect your filler flap. Plenty of motors state the fuel type inside the flap or on the cap. Look at it on the first fill in any car you don't know.
- A coloured fob or a sticker on the diesel's key achieves more than any amount of meaning to remember, for a house with one of each.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" out loud before you lift the nozzle off the petrol pump. It sounds daft and it works.
- Put your phone away. This is an easy mistake to make whilst you are thinking about something else.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler built to refuse a petrol nozzle, and aftermarket devices are available for the rest. Count it as a backstop, then keep reading the petrol pump.
- Less petrol makes a weaker mix, and so stop the moment you realise — while remembering that the next stage is unchanged. It's still not to fire it up.
Put petrol in a diesel around Woodburn already?
Then the order of things is brief. Starting it is out, and so is switching on your ignition. If you are still at the forecourt — Esso or anywhere else — ask the staff to help you push it clear of the pump. Ring 0333 366 0103 next, with three facts — the fuel, the approximate quantity, and whether it's run.
Corrosion and deposits are the problem with AdBlue, whereas petrol brings lost lubrication. So if it was AdBlue, say so — and read its own Woodburn page.
Why one petrol in a diesel task in Woodburn costs more than another
The four situations above are four different jobs, so no single price for this would be honest. Which of them you are in is mostly what shifts the cost. The share matters next, meaning how much of your tank is petrol, and then the position of your car and whether reaching it is safe for a technician.
Three questions come first, before quoting, rather than after — what was put in, how much, has it run — and this is the reason. Those replies turn a range into a straight figure.
About Woodburn and its setting
Woodburn is a suburban area situated on the riverside in Midlothian, with a mix of terraced housing and local amenities. Woodburn sits at an elevation of 56 metres, close to the nearby communities of Whitehill and Easthouses. Woodburn is located near Edinburgh, Scotland's capital city, which is approximately 6.7 miles away. Woodburn has a population of around 6461 residents, living in a predominantly residential area.
Fuel drain cover around Woodburn and across Midlothian
Our vans answering petrol in diesel jobs around Woodburn, in the EH postcode area, also work the spots around it, Whitehill, Easthouses and Lugton among them. The car doesn't need to come to us: we drain at a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
At the petrol pump in Woodburn, still?
The best position there is, then — that's where you are. Ring, and leave it turned off.