Petrol in a Diesel Car in Kennington Lees: How Worried Should You Be?
Provided it has not been started, worry less than you probably are. Everyone in Kennington Lees starts with "have I ruined it?", and the honest answer is generally no: petrol resting inside that tank of a diesel remains harmless until priming, cranking or driving pulls it into your fuel system. To leave it like that, ring Petrol in Diesel and leave your motor switched off. Keep reading for three things: the effect petrol has inside a diesel motor, the clues of how far it has got, and the way to make sure you never repeat it.
The engine and petrol in a diesel: what happens
On its way through a motor, diesel does two tasks. It protects first, and after that does it burn. Extremely fine gaps are built into the fuel injectors and the high-pressure fuel pump, and only your diesel flowing through stops those surfaces grinding together.
Poorly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips away the lubrication a fuel system needs, so a pump on the mixture wearing itself. It's also made to resist igniting under compression — the reverse of what a diesel needs — which is why you get the rattling.
Seen together, they show the shape the issue has. The harm is done by movement, not by contact. Petrol in the tank is a fuel problem. Whatever a worn pump sheds goes on, carried by your fuel, into your injectors downstream, which is why a pump that has worked on that petrol is where a mechanical issue starts.
Kennington Lees, petrol in a diesel: four cases, from mild to serious
Filled up, not once started. The best case there can be. On a forecourt, and really only there, the petrol is still limited to your tank — since anywhere else the vehicle was driven to reach it. The task is draining and rinsing on the spot.
A brief spell of running, or merely your ignition on. The fuel system has been primed, so petrol has left the tank and got to the fuel filter and your lines. That is generally still a simple task — a drain, a flush, and the filter seen to.
The pump now worked a few miles on weakened fuel — that's what driving the vehicle meant. The work is that tank, the lines, the fuel filter and fresh fuel through the entire circuit, and how hard your car was driven matters as much as how far. Driving the children to Goat Lees Primary School is one kind of trip. Driving as far as Canterbury, under 15 miles away, makes a very different job — as does any distance on the M20, under a mile from Kennington Lees, with the engine running hard the whole time.
Rattling, a ragged idle, smoke, a throttle gone soft: driven till it complained. That is the motor telling you its fuel has stopped behaving like diesel. Whether it's the verge on Towers View, a lay-by or a side road, stop where you are and leave it. The drain and flush still come first, and they take care of it: when a car is pulled over soon, permanent damage is very rare.
Myths Kennington Lees motorists hear about petrol in a diesel
"Top it up the rest of the way with diesel and it will be fine" — a myth. It will not. Nothing is removed when you top up — your tank just carries more of the same blend. Percentage isn't how a diesel fuel system tolerates petrol, however much that guidance supposes.
"Modern diesels can handle a little petrol" — a myth, and closer to the reverse. A current diesel sends its fuel through more precise parts at higher pressure, which makes the lubrication count more, not less.
"It starts, it drives, so there is no harm" — the myth that trips up most people than any other. Feed diesel to a petrol engine and it normally won't run, and so the motorist stops — and the damage stops with them. A diesel fed petrol usually starts, idles and drives away as if nothing has happened, whilst the pump grinds. Fine and running aren't the same at all.
Myth: "Add some two-stroke oil and drive it home." It is an outdated workaround for a different issue. None of what petrol thinned is put back by it — and afterwards, the tank still contains that petrol.
"Drain it yourself and you're sorted" — a myth, because after it's been running some petrol sits in the filter and lines, ready to go straight back through the pump on your next start. And, a can of petrol filled by the roadside is genuinely hazardous.
Why petrol in a diesel happens so easily
On purpose? Never. Through carelessness? Rarely, if ever. The forecourt makes it simple: the petrol nozzle is the narrower of the two, and it slips into a diesel filler with almost no resistance, whilst a diesel nozzle mostly won't go into a petrol car at all. So the slip runs one way.
The moment routine stops matching your car is the moment it happens. Courtesy car, hire car, or a vehicle that's brand new. Two vehicles on one drive, one petrol, one diesel. Your ordinary forecourt, its pumps now in a different order. A rushed fill en route to Ashford International with a train to catch. Precisely the moment it takes place: after years of driving petrol, someone fills a diesel Volkswagen Golf for the first time. The hand does what it has always done when you add rain, a phone call or a back seat full of children.
How to avoid petrol in a diesel at your next fill-up in Kennington Lees
- 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.
- Check your filler flap. Plenty of cars state the fuel type inside the flap or on the cap. Look at it on your first fill in a car you do not know.
- One of each in the home? Label your key to the diesel — a coloured fob, a sticker — since intending to remember is not enough.
- Say it before you lift it. On the first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the petrol pump. It sounds daft and it does the trick.
- Tuck your phone away. This is an easy mistake to make whilst you are thinking about something else.
- Add-on devices exist for motors without one, and some diesels come with a filler that will not take a petrol nozzle. Useful — but a backstop at best, never a reason to stop checking the label.
- Stop as soon as you notice. Less petrol in your tank makes a weaker blend. It does not change what to do next, which is still not to start the vehicle.
Put petrol in a diesel in Kennington Lees already?
The order of things is short, then. Starting it is out, and so is switching on your ignition. If you are still at the forecourt — Willesborough Kennington Garages or anywhere else — ask the staff to help you roll the car away from the pump. Ring 0333 366 0103 next, with three answers — your fuel, the approximate volume, and whether it has run.
Say so if it was AdBlue instead of petrol: it's a separate fault, with its own page for Kennington Lees, because AdBlue brings corrosion and deposits instead of lost protection.
One petrol in a diesel job in Kennington Lees costs more than another. Why?
Four separate tasks lie behind the four scenarios above — which is why there's no fair single price. Which of them you are in is chiefly what shifts your cost. Two things follow that: the petrol that got in as a share of what that tank takes, then the spot your car is in and whether a technician can reach it safely.
That is why our technicians ask three queries before pricing instead of after: what went in, how much, and if it's run. Given the replies, you get a straight figure rather than a range.
About Kennington Lees
Kennington Lees is a suburban area in Kent, situated inland at an elevation of 61 metres, and is located near the city of Canterbury. Kennington Lees is characterized by its predominantly detached housing stock, and is part of a larger residential area that includes nearby places such as Goat Lees and Bockhanger. Kennington Lees has a population of approximately 4968 residents, and is positioned around 11.5 miles from Canterbury and 49.3 miles from London.
Fuel drain cover in Kennington Lees and across Kent
Kennington Lees rests in the TN postcode area, and our teams that answer petrol in diesel jobs there work the spots around it as well — Goat Lees, Bockhanger and Kennington among them. We drain where the car is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
Kennington Lees: still at the petrol pump?
Then you're in the best position there can be. Keep it off. Ring.