How Worried Should You Be? Petrol in a Diesel Car in Hurgill
Likely less than you already are — as long as no one has started it. Everyone in Hurgill starts with "have I wrecked it?", and the honest answer is generally no: petrol left inside your tank of a diesel remains harmless till priming, cranking or driving pulls it into the system. Keep it like that: leave the engine off then phone Petrol in Diesel. Keep reading for three things: the effect petrol has inside a diesel engine, the signs of how far it has got, and ways to make sure you don't do it again.
Petrol in a diesel: what does it do to the engine?
Diesel does two tasks on its way through an engine. It protects to begin with, and only then does it burn. What keeps the surfaces inside the high-pressure pump and the fuel injectors from grinding against one another is the diesel passing through them — they're made to extremely fine gaps.
Of these two jobs, petrol manages the first poorly and the second not at all. The clattering comes from petrol being made not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips away the protection the fuel system hinges on, and any pump running on that mix is wearing itself.
The shape of the trouble is plain once you put those together. Contact doesn't do the damage — movement does. Petrol in a tank is a fuel problem. The beginning of a mechanical one is a pump that has been working on that petrol — and whatever a worn pump sheds travels on with the fuel to your injectors downstream.
How serious is petrol in a diesel? Four situations our engineers see in Hurgill
Fuelled up, never started. The best case there can be. On a forecourt, and truly only there, the petrol is still confined to the tank — since everywhere else the vehicle was driven to reach it. The job is draining and rinsing on the spot.
A brief spell of running, or merely the ignition on. Petrol has left that tank and reached the filter and the lines, since your system has been bled. Still generally simple: drain, flush, and the filter seen to.
Some miles driven, and your pump has spent every one of them labouring on thinned fuel. Miles is only half of it; how hard it was driven matters equally. Either way the work runs to your tank, the fuel lines, your filter and clean fuel through the whole circuit. On the school run to Trinity Academy Richmond, the mileage is small. A run as far as Ripon, under 25 miles away, is a very different job. So is any miles on the A1(M), under 5 miles from Hurgill, where the engine has been labouring hard the whole time.
It protested, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone lumpy. What you are hearing is the motor signalling fuel that no longer behaves like diesel. Stop wherever you are — the verge on Sycamore Avenue, a lay-by, a side street — and leave it where it is. Long-term damage is very uncommon if a vehicle is stopped early, and the drain and flush that still go first deal with it.
Myths Hurgill drivers 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. Topping up removes nothing; it gives you a fuller tank of the same mixture. A diesel fuel system does not accept petrol by percentage in the way that advice supposes.
If anything, the reverse holds. Myth: "A modern diesel can cope with a bit of petrol." Protection counts more on newer diesels, not less, since their fuel passes through finer components at higher pressure.
Myth: "If it starts and drives, there is no harm done." This is the one that fools drivers. The driver of a petrol motor fed diesel normally has no choice but to stop, because it will not run, and the harm stops with them. Feed petrol to a diesel and it generally starts, idles and drives away as if nothing happened — all while its pump wears. Fine and running are not the same at all.
Myth: "Add some two-stroke oil and drive the vehicle home." It's an outdated fix for a different problem. None of what petrol thinned is put back by it — and later, the tank still contains the petrol.
The next start sends petrol back round your pump from the lines and the filter, where some of it sits after the engine has run. That's why draining the tank yourself doesn't leave you sorted — a myth. Also, a can of petrol filled by the roadside is genuinely hazardous.
Petrol in a diesel: how does it happen?
No one does it on purpose, and it is seldom carelessness. The forecourt makes it easy: the petrol nozzle is the smaller of the two, and it slips into a diesel filler with almost no resistance, while a diesel nozzle generally won't go into a petrol car at all. So the slip runs one way.
Habit and your car getting out of step is when it occurs. Courtesy car, hire car, or a car that's new. One petrol and one diesel on the driveway of the same household. A forecourt you know, only with its pumps arranged differently. Rushing for a train outside Darlington and fuelling up en route. Years of petrol motors behind you, a diesel Renault Megane in front of you at the forecourt for its first tank — that is when. Throw in rain, a phone call or a back seat full of children, and your hand repeats what it has always done.
How to avoid petrol in a diesel on your next fill-up in Hurgill
- Read the petrol pump, not the colour. In the UK unleaded handles are generally green and diesel black, but not on every forecourt. The label is what counts.
- Check your filler flap. Many vehicles state the fuel inside the flap or on the cap. Look at it on the first fill in any motor you do not know.
- Mark your key. In a home 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 seems daft and it does the trick: on the first fill in a new or hired car, say "diesel" out loud before you lift the nozzle off the petrol pump.
- Mistakes like this are simple to make whilst your mind is on something else, and so your phone goes away.
- Add-on devices are available for cars without one, and some diesels are built with a filler that will not take a petrol nozzle. Useful — but a safety net at best, never a reason to stop checking the label.
- Less petrol means a weaker blend, and so stop as soon as you realise — while remembering that your next step is unchanged. It's still not to crank it.
Already put petrol in a diesel around Hurgill?
Then the order of things is brief. Starting it is out, and so is switching on the ignition. The attendants on the forecourt — whether at Morrisons itself or wherever you filled up — will normally help roll it away from the petrol pump if you ask. Then phone 0333 366 0103 and tell us what got in, about how much, and if it's run.
Corrosion and deposits form the issue with AdBlue, where petrol brings lost lubrication. So if it was AdBlue, say so — and see its own Hurgill page.
Why one petrol in a diesel job around Hurgill costs more than another
An honest single price does not exist here: four scenarios, four separate jobs. Mostly, the cost moves with which situation you're in. Two things follow that: the petrol that was put in as a proportion of what that tank takes, then the spot your car is in and whether a technician can get to it safely.
That is why our technicians ask three questions before pricing rather than after: what was put in, how much, and whether it's run. With those replies, there is a straight figure instead of a range.
About Hurgill, briefly
Hurgill is a suburban area situated on the riverside in North Yorkshire, with a mix of detached housing and a population of around 1836 residents. Hurgill sits at an elevation of 197 metres, overlooking the surrounding countryside and nearby places such as Friars Closes and Richmond. Hurgill is located approximately 20.9 miles from the city of Ripon and 211.5 miles from London, making it a relatively rural suburb. Hurgill's riverside setting provides a unique character to the area.
Hurgill and North Yorkshire: where our fuel drain cover runs
Petrol in diesel calls around Hurgill — part of the DL postcode area — go to teams that likewise cover the locations round it, Friars Closes, Richmond and Holly Hill included. The car 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 pump in Hurgill, still?
No position is better: that's where you are. Ring, and keep it switched off.