How Worried Should You Be? Petrol in a Diesel Car in Aberavon
Likely less than you are now — provided nobody has started it. Petrol resting in a diesel tank does nothing to your motor until something pulls it through the system — your ignition priming your pump, the starter, or driving itself. So the honest answer to the first query everyone around Aberavon asks, "have I wrecked it?", is normally no. Petrol in Diesel is who to ring, with your engine left off, so it stays that way. The rest of this page covers what petrol actually does to a diesel, how to judge how far it has got, and how to make sure it doesn't happen to you again.
Petrol in a diesel: what does it do to the motor?
On its way through an engine, diesel does two tasks. Before it burns, it lubricates — and then it combusts. What keeps the surfaces inside the high-pressure fuel pump and your injectors from grinding against one another is the diesel passing through them — they are made to very fine clearances.
Of these two jobs, petrol handles the first badly and the second not at all. A pump working on a petrol mixture is wearing itself out, since petrol is thinner than diesel and strips out the protection the fuel system depends on. Petrol is also designed to resist igniting under compression — the opposite of what a diesel needs from its fuel — and that's where any clattering starts.
Put those together and the shape of the issue is plain. Not contact but circulation is what causes the damage. A tank with petrol in it is a fuel problem. A pump that has been running on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds travels on with the fuel to the fuel injectors further on.
Aberavon, petrol in a diesel: four cases, from mild to serious
Fuelled up, never started. The best case there is. Just your tank has petrol in it, and so the job is clearing the tank and flushing the system where the vehicle sits. This situation can only really take place at a forecourt: anywhere else, the car got there by being driven.
Ignition on, or started for a second. With your system primed, the lines and filter now contain petrol that came from that tank. Still generally straightforward: drain, flush, and your filter seen to.
Those few miles driven meant your pump running on fuel weakened by petrol throughout. Miles is only half of that; how hard it was driven counts equally. Either way the work includes that tank, the fuel lines, the filter and clean fuel through the whole circuit. On the school run to the local primary school, the distance is small. Any mileage on the M4, under a mile from Aberavon, means the motor working hard throughout, and a run to Swansea, under 10 miles away, is a very different job too.
Driven till it complained. Rattling, a ragged idle, smoke, a throttle that has gone soft. That is your motor telling you its fuel has stopped behaving like diesel. Leave it wherever it has stopped: a lay-by, a side street, the verge on Attlee Avenue. What comes first is still the drain and flush, and that takes care of it, with long-term damage very unusual when a car is pulled over soon.
Petrol in a diesel myths Aberavon people hear
Myth: topping up to full with diesel makes it fine. It doesn't. A fuller tank of the same mix is all you get, since topping up takes out nothing. Percentage is not how a diesel fuel system copes with petrol, whatever that guidance presumes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. A newer diesel runs its fuel through finer parts at higher pressure, which makes the protection matter more, not less.
Myth: "If it starts and drives, there is no harm done." This is the one that fools motorists. The driver of a petrol engine fed diesel usually has no choice but to stop, since it will not run, and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually will; meanwhile the pump grinds. Fine and running aren't the same thing.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a separate fault. It does not put back what petrol has weakened, and the petrol is still in your tank afterwards.
The next start draws petrol back round your pump from the lines and the fuel filter, where some of it sits after the motor has been run. That's why a DIY tank drain does not leave you sorted — a myth. Also, a can of petrol drained by the kerbside is truly hazardous.
Why petrol in a diesel happens so easily
No one does it on purpose, and it's rarely carelessness. A diesel nozzle generally will not fit a petrol vehicle, but the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake straightforward, and only in one direction.
The moment habit stops matching the vehicle is the moment it occurs. Courtesy car, hire car, or a vehicle that is brand new. Two cars on one driveway, one petrol, one diesel. A familiar forecourt with the pumps in a different order. A hurried fill en route to Port Talbot Parkway with a train to catch. Years of petrol motors behind you, a diesel Renault Clio in front of you at the forecourt for its first tank — that is when. Add rain, a phone call or a back seat full of children, and the hand does what it has always done.
How to avoid petrol in a diesel on your next fill-up around Aberavon
- Not every forecourt in the UK keeps to green for unleaded and black for diesel, though most generally do. Read the petrol pump's label; the colour is only a hint.
- Check your filler flap. Many motors state the fuel inside the flap or on the cap. Look at it on your first fill in a vehicle you don't know.
- Mark the key. In a house 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 comes off the petrol pump the first time you fill a hired or new vehicle, say "diesel" aloud. Daft, perhaps, yet it works.
- Thinking about something else is when this becomes an easy mistake to make, and so tuck the phone away then keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to refuse a petrol nozzle, and add-on devices exist for motors without one. They are a safety net, not a reason to stop checking the pump.
- Stop the moment you notice. Less petrol inside your tank makes a weaker blend. It doesn't change what to do next, which is still not to crank it.
Petrol already in a diesel around Aberavon? Begin here
Short and simple, then, is the order of things. Starting it is out, and so is switching on the ignition. Yet on the forecourt, at Murco or anywhere else? Ask the staff to help you roll the car away from the petrol pump. What went in, about how much, and whether it's run: tell us that when you call 0333 366 0103.
Corrosion and deposits are the problem with AdBlue, whereas petrol means lost lubrication. So if it was AdBlue, say so — and read its own Aberavon page.
Aberavon petrol in a diesel tasks: why one costs more than another
There is no fair single price for this, because the four scenarios above are four different tasks. The situation itself does most of the work of moving your cost. After that it is the proportion — how much petrol was put in against how much the tank takes — and after that where your car is and whether our van can get to it safely.
That's why our technicians ask three questions before costing instead of after: what went in, how much, and whether it has run. Given the answers, there is a straight figure rather than a range.
About Aberavon
Aberavon is a suburban area in south Wales, situated on the coast near Swansea. Aberavon has a population of around 6603 people and is characterized by semi-detached housing. Aberavon sits at a low elevation of approximately 10 metres above sea level, close to the nearby towns of Port Talbot and Sandfields. Aberavon is located near the Velindre area, with Swansea just 6.3 miles away.
Across Neath Port Talbot and in Aberavon: fuel drain cover
Petrol in diesel jobs in Aberavon — part of the SA postcode area — go to teams that likewise cover the places around it, Port Talbot, Sandfields and Velindre included. A forecourt, a supermarket car park, a lay-by or your own driveway are all places we work, and your vehicle does not need to move to us.
At the petrol pump in Aberavon, still?
The best position there is, then — that is where you are. Switched off it remains; then ring.