Camden Park: Petrol in a Diesel Car? How Worried to Be
Less than you likely are, if it has not been started. Petrol sitting in a diesel tank does nothing to your engine until something pulls it through your fuel system — the ignition priming your pump, the starter, or the drive itself. So the fair answer to the first query anyone around Camden Park asks, "have I wrecked it?", is normally no. Keep it like that: leave the motor off and call Petrol in Diesel. Read on for three things: the effect petrol has inside a diesel motor, the signs of how far it has spread, and ways to make sure you never repeat it.
Inside the engine: what petrol in a diesel does
Diesel does two jobs on its way through a motor. It protects first, and only then does it burn. Extremely fine tolerances go into the injectors and your high-pressure pump, and only the diesel flowing through keeps their surfaces from grinding together.
Poorly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips out the protection a fuel system needs, so a pump on the blend wearing itself. It is also made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the clattering.
Put those together and the shape of the problem is plain. It's movement that does the harm, not contact. Petrol in a tank is a fuel problem. The beginning of a mechanical problem is a pump that has been running on that petrol — and whatever a worn pump sheds travels on with the fuel to the fuel injectors downstream.
How serious is petrol in a diesel? Four scenarios our technicians see around Camden Park
Filled up, and not started: nothing beats it. Only your tank has petrol in it, so the task is emptying the tank and flushing the fuel system where your car stands. This scenario can only really occur at a forecourt: anywhere else, the vehicle got there by being driven.
A moment's running, or merely your ignition on. The fuel system has been primed, so petrol has left that tank and reached the filter and the lines. That's normally still an easy job — a drain, a flush, and the filter seen to.
Your pump now spent a few miles on thinned fuel — that's what driving the car does. The work is the tank, your lines, your filter and clean fuel through the whole system, and how hard your car was driven counts as much as how far. Short trips, like the school run to St Peter's Church of England Primary School, are one thing. Getting as far as Brighton and Hove, under 50 miles away, makes a very different job — as does any distance on the M26, under 15 miles from Camden Park, with the motor running hard all the way.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone lumpy. The fuel isn't behaving like diesel any more, and your engine is telling you. Leave it where it stops: a lay-by, a side street, the verge on Nelson Road. What comes first is still the fuel drain and flush, and that deals with it, with long-term damage very unusual when a vehicle is pulled over early.
What Camden Park drivers get told about petrol in a diesel — and the stories in it
Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. Topping up takes out nothing; it gives you a bigger tank of the same mixture. That advice presumes a diesel fuel system tolerates petrol by percentage. It doesn't.
"Newer diesels can handle a little petrol" — a myth, and closer to the reverse. Lubrication matters more on modern diesels, not less, because their fuel runs through finer parts at higher pressure.
Myth: "If it starts and drives, there's no damage done." This is the one that catches drivers. The motorist of a petrol engine fed diesel usually stops, because it will not run, and the damage stops with them. Nothing looks to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump grinds. Running is not the same as fine.
An old workaround for a separate problem lies behind this one. Myth: "Add some two-stroke oil and drive the vehicle home." The petrol is still in your tank afterwards, and whatever it has thinned isn't put back.
Myth: "Drain the tank yourself and you're sorted." After the engine has been run, some of the petrol is no longer inside the tank: it is in the fuel filter and the fuel lines, and it goes right back through the pump at your next start. It is also really risky to drain petrol into a can by the kerbside.
Petrol in a diesel: how does it happen?
On purpose? Never. Through carelessness? Seldom, if ever. A diesel nozzle generally will not fit a petrol car, but the smaller petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake simple, and just in one direction.
The moment routine stops matching the vehicle is the moment it takes place. Courtesy car, hire car, or a vehicle that's new. One petrol and one diesel on the driveway of the same household. Your normal forecourt, its pumps suddenly in a different order. A hurried fill on the way to Tunbridge Wells with a train to catch. A new-to-you diesel Volkswagen Golf, its first fuelling, and a motorist accustomed to petrol: precisely when it occurs. With rain, a call arriving, or a car full of children to deal with, your hand simply does what it always has.
How to avoid petrol in a diesel at your next fill-up in Camden Park
- Check the pump, not the colour. In the UK unleaded handles are usually green and diesel black, yet not on every forecourt. The label is what counts.
- Plenty of vehicles state the fuel inside the filler flap or on the cap, so check it on the first fill in any car you don't know.
- A coloured fob or a sticker on the diesel's key does more than any amount of meaning to remember, for a house with one of each.
- It seems silly and it works: on the first fill in a new or hired car, say "diesel" out loud before you lift the nozzle off the pump.
- Tuck your phone away. This is an easy mistake to make while you are thinking about something else.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler built to block a petrol nozzle, and add-on devices are available for motors without one. They are a safety net, not a reason to stop reading the petrol pump.
- Stop the moment you realise. Less petrol in that tank makes a weaker mixture. It does not change what to do next, which is still not to crank it.
Already put petrol in a diesel in Camden Park?
The order of things is short, then. Starting it is out, and so is turning on your ignition. If you are still on the forecourt — Esso or anywhere else — ask the staff to help you push the vehicle clear of the petrol pump. Call 0333 366 0103 next, with three answers — your fuel, the approximate amount, and if it has run.
If it was AdBlue instead of petrol, say so. That's a different fault — corrosion and deposits instead of lost lubrication — and it has its own page for Camden Park.
Why one petrol in a diesel task in Camden Park costs more than another
There is no honest single price for this, since the four scenarios above are four separate tasks. Which of them you're in is mostly what moves your cost. The share counts next, meaning how much of your tank is petrol, and then the position of the car and whether reaching it is safe for a technician.
Three questions come first, before quoting, rather than after — what went in, how much, has it run — and this is the reason. A range turns into a straight figure once the replies are in.
About Camden Park itself
Camden Park is a suburban area in Kent, situated inland at an elevation of 132 metres, and is located approximately 31.7 miles from London. Camden Park is characterized by its predominantly detached housing stock, which reflects the area's residential nature. Camden Park is close to nearby places such as Hawkenbury, Royal Tunbridge Wells, and St James, and is also within reach of the city of Brighton and Hove, which is 27.9 miles away. Camden Park has a population of around 3777 residents.
Fuel drain cover across Kent, Camden Park included
Hawkenbury, Royal Tunbridge Wells and St James are among the places around Camden Park that the same vans work, answering petrol in diesel jobs across Camden Park's TN postcode area. Our engineers drain where your vehicle is — your own drive, a lay-by, a supermarket car park, a forecourt — so it never needs to come to us.
At the pump around Camden Park, still?
Nothing beats it: that's where you now are. Switched off it stays; then ring.