Petrol in a Diesel Car in Highfield: How Worried Should You Be?
Provided it hasn't been started, you can worry less than you likely are. "Have I wrecked it?" is the first question anyone in Highfield asks, and the truthful answer is normally no, since petrol left in a diesel tank hurts nothing till it's drawn through the fuel system — by ignition priming, by the starter, or by driving. Petrol in Diesel is who to phone, with your engine kept off, so it remains that way. Read on for three things: the effect petrol has inside a diesel engine, the clues of how far it has spread, and ways to make sure you never repeat it.
Inside the engine: what petrol in a diesel really does
On its way through a motor, diesel has two jobs. It lubricates first, and after that does it burn. Your high-pressure pump and the injectors are built to very fine gaps, and your diesel passing through them is what stops those surfaces from grinding against one another.
Petrol handles the first job badly and the second not at all. Being less viscous than diesel, petrol strips away the protection a fuel system needs, so a pump on the blend to wear itself. It's equally made to resist igniting under compression — the reverse of what a diesel needs — which is why you hear the rattling.
The shape of the issue is clear once you put those together. The damage is done by circulation, not by contact. Any tank with petrol in it is a fuel problem. Once the pump has been working on that petrol, a mechanical fault has started: anything shed by a pump that is grinding is carried downstream to your injectors with your fuel.
How bad is petrol in a diesel? Four scenarios we see around Highfield
Fuelled, and never started: no case is better. Being at a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With that petrol held inside that tank alone, it's emptied and purged on the spot, and nothing more is needed.
A moment's running, or merely your ignition on. With the system primed, the fuel lines and filter now contain petrol that came from the tank. Drain, flush, see to the fuel filter: still normally simple.
Driven a few miles. Now the pump has spent those miles working on thinned fuel. Miles is only half of that; how hard it was driven matters just as much. Either way the work runs to your tank, the lines, the fuel filter and clean fuel through the whole circuit. The school run to Highfield Community Primary School is one matter. Very different a second time: a run to Newcastle upon Tyne, under 10 miles away, or some miles on the Central Motorway East, under 10 miles from Highfield, where your engine never stopped running hard.
Clattering, an uneven idle, smoke, a throttle gone soft: driven until it complained. The fuel isn't behaving like diesel any more, and your engine is saying so. Stop wherever you are — the verge on Cowell Grove, a lay-by, a side street — then leave the vehicle where it is. Permanent damage is very rare when a car is stopped early, and the drain and flush that still go first deal with it.
Petrol in a diesel stories Highfield drivers hear
False: topping up to full with diesel makes it fine. It doesn't. Nothing is removed by topping up — you're left with a bigger tank, still the same mixture. A diesel fuel system doesn't tolerate petrol by percentage in the way that guidance supposes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the opposite. At higher pressure, through finer parts: that is how a newer diesel moves its fuel, so the lubrication matters more, not less.
The myth that catches motorists off guard: if it starts and drives, it must be unharmed. Any petrol motor fed diesel generally will not run, and so the motorist stops and the harm stops with them. Feed petrol to a diesel and it usually starts, ticks over and drives away as if nothing happened — all while its pump wears. Being able to run isn't proof of being fine.
Myth: a two-stroke additive lets you to drive home. It was an old fix, supposed for another issue. It doesn't put back what petrol has thinned, and that petrol is still inside that tank later.
Myth: "Drain that tank yourself and you are sorted." Once the motor has been run, some of that petrol is no longer in that tank: it's in the filter and your lines, and it goes right back through the pump on the next start. It's also really risky to drain petrol into a can at the kerbside.
Why petrol in a diesel takes place so easily
On purpose? Never. Through carelessness? Rarely, if ever. The petrol nozzle is the narrower of the two and slides into a diesel filler with almost no resistance; a diesel nozzle mostly won't go into a petrol vehicle at all. The forecourt makes it simple, and the mistake runs one way.
It occurs when habit and the car stop matching. Hire cars, courtesy cars, and cars that are new to you. A household with one petrol and one diesel on the driveway. Your ordinary forecourt, its pumps now in a different order. A rushed fill on the way to Blaydon with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is precisely the moment it occurs. Add a back seat full of children, a phone call or rain, and the hand wins.
Highfield drivers: how to prevent petrol in a diesel next time
- The label is what matters, so check the petrol pump rather than the colour: in the UK unleaded handles are usually green and diesel black, yet not on every forecourt.
- In a motor you don't know, look inside the flap over your filler or at the cap before the first fill: plenty of vehicles state the fuel type there.
- Label your key. In a home with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of meaning to remember.
- Before the nozzle leaves the petrol pump the first time you fill a hired or new car, say "diesel" out loud. Daft, perhaps, yet it works.
- Thinking about something else is when this becomes an easy mistake to make, and so put the phone away then keep your mind on the petrol pump.
- Add-on devices are available for vehicles without one, and some diesels are built with a filler that will not take a petrol nozzle. Useful — but a backstop at best, never a reason to stop checking the label.
- The moment you notice, stop: less petrol in your tank makes a thinner mixture. What to do next doesn't change, though — still do not start it.
Put petrol in a diesel in Highfield already?
Then the order of things is short. Leave it unstarted, with the ignition off as well. Ask the attendants to help you roll it away from the petrol pump if you're still on the forecourt, whether that's Esso or anywhere else. Then call 0333 366 0103 and tell us what went in, about how much, and whether it's run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost lubrication, make it a different problem — Highfield has a page just for it.
What makes one Highfield petrol in a diesel task cost more than the next
Four different jobs lie behind the four scenarios above — which is why there's no honest single price. What shifts the cost is chiefly which of them you're in. Two things follow that: the petrol that went in as a proportion of what the tank takes, then the place your car is in and whether our van can get to it safely.
Before any quote, not after, we ask three queries: your fuel that was put in, its amount, and if it has run. That is why. Those replies change a range into a straight figure.
About Highfield itself
Highfield is a village situated on the riverside in Tyne and Wear, with a population of around 1200 people. Highfield sits at an elevation of 108 metres, approximately 7.3 miles from Newcastle upon Tyne, and is characterized by its predominantly terraced housing. Highfield is located near other small settlements such as Victoria Garesfield, Hooker Gate, and Rowlands Gill, in the North East region of England. Highfield is also relatively distant from London, at around 245.5 miles away.
Fuel drain cover in Highfield and across Tyne and Wear
Victoria Garesfield, Hooker Gate and Rowlands Gill are among the spots near Highfield that the same teams work, answering petrol in diesel call-outs across Highfield's NE postcode area. A forecourt, a supermarket car park, a lay-by or your own drive are all spots our technicians work, and your car doesn't need to move to us.
Still at the pump in Highfield?
The best place there is, then — that is where you are. Call, and keep it turned off.