Petrol in a Diesel Car in Burnedge: How Worried Should You Be?
Less than you likely are, if it hasn't been started. "Have I wrecked it?" is the first thing everyone around Burnedge asks, and the honest answer is normally no, since petrol resting in a diesel tank harms nothing until it is dragged through the system — by ignition priming, by your starter, or by driving. To leave it that way, ring Petrol in Diesel then leave the motor switched off. Further down, this page sets out what petrol actually does inside a diesel, how far it may have got, and how to stop it happening to you a second time.
What petrol in a diesel does to the motor
On its way through an engine, diesel has two jobs. Oiling comes before burning; it does both. What keeps the surfaces inside the high-pressure pump and your injectors from grinding against each other is the diesel passing through them — they are designed to extremely fine gaps.
Of those two tasks, petrol manages the first poorly and the second not at all. A pump working on a petrol mix is wearing itself out, since petrol is thinner than diesel and takes away the lubrication your fuel system relies on. Petrol is also designed to resist igniting under compression — the reverse of what a diesel wants from its fuel — and that's where the clattering comes.
Together, those leave the shape of the issue plain. Not contact but circulation is what causes the damage. Petrol in the tank is a fuel fault. Whatever a worn pump sheds goes on, carried by the fuel, into your injectors downstream, which is why a pump that has been working on the petrol is where a mechanical fault starts.
Four situations our engineers see around Burnedge: how serious is petrol in a diesel?
Fuelled, and not started: nothing beats it. Being on a forecourt is what makes this possible: elsewhere, the car has been driven there to begin with. With that petrol kept in your tank alone, it's drained and purged right where it stands, and nothing more is needed.
The ignition switched on, or a short start. Once primed, the system has pulled petrol from your tank as far as your filter and the fuel lines. Drain, flush, see to your filter: still normally simple.
Driven a couple of miles. Now your pump has spent these miles running on thinned fuel. The work is the tank, the fuel lines, your filter and fresh fuel through the whole circuit, and how hard the car was driven counts as much as how far. Short trips, such as the school run to Thornham St. James CofE Primary School, are one matter. Very different again: a run to Manchester, under 10 miles away, or some miles on the M62, under a mile from Burnedge, where your engine never stopped labouring hard.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone uneven. The fuel isn't behaving like diesel any more, and your motor is telling you. Whether it is the verge on New Broad Lane, a lay-by or a side street, stop where you are then leave it. A car stopped quickly very seldom has permanent damage, as the drain and the flush, which still come first, take care of it.
Burnedge drivers and the petrol in a diesel myths they hear
"Top it up the rest of the way with diesel and it'll be fine" — a myth. It won't. Topping up removes nothing; it gives you a bigger tank of the same mixture. That guidance supposes a diesel fuel system tolerates petrol by percentage. It does not.
"Modern diesels can handle a little petrol" — a myth, and nearer the opposite. At higher pressure, through finer components: that is how a newer diesel handles its fuel, and so the protection matters more, not less.
The myth that catches people out: if it starts and drives, it must be unharmed. Feed diesel to a petrol engine and it generally won't run, and so the driver stops — and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile your pump grinds. Running is not the same as fine.
Myth: "Add some two-stroke oil and drive it home." It is an old fix for a different issue. What petrol has thinned stays weakened, and that petrol stays in the tank anyway.
"Drain it yourself and you're sorted" — a myth, because after it has been running some petrol lies in your filter and lines, waiting to go straight back through the pump on your next start. It is also really hazardous to drain petrol into a can by the kerbside.
How it happens: petrol in a diesel
No one does it on purpose, and it's rarely carelessness. A diesel nozzle generally won't fit a petrol motor, but the smaller petrol nozzle goes into the filler of a diesel almost without resistance — so forecourts make this one error straightforward, and just in one direction.
When routine and the car stop matching, it occurs. Hire cars, courtesy cars, and motors that are new to you. Households running one of each, petrol and diesel. A well-known forecourt with the pumps in a different order. Rushing for a train at Rochdale and fuelling up en route. Years of petrol vehicles behind you, a diesel Volkswagen Golf 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.
Preventing petrol in a diesel next time you fill up in Burnedge
- Not every forecourt in the UK follows green for unleaded and black for diesel, though most generally do. Read the petrol pump's label; the colour is just a hint.
- The first fill in an unfamiliar vehicle is the time to check the filler flap — inside it, or on the cap, many vehicles state which fuel to use.
- One of each in the home? Mark the key to your diesel — a coloured fob, a sticker — because intending to remember isn't enough.
- "Diesel", aloud, before you lift the nozzle — every time a new or hired car gets its first tank. It seems silly. It works.
- Mistakes like this are straightforward to make while your mind is on something else, and so your phone goes away.
- Some diesels have a filler designed to reject a petrol nozzle, and devices you can add are available for cars without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop checking the pump.
- The moment you notice, stop: less petrol inside the tank means a thinner mixture. What to do next doesn't change, though — still don't fire it up.
Petrol already in a diesel around Burnedge? Start here
Short and simple, then, is the order of things. Starting it is out, and so is switching on your ignition. Ask the staff to help you roll it clear of the petrol pump if you are still at the forecourt, whether that's Texaco or anywhere else. What got in, roughly how much, and whether it has run: tell us those when you phone 0333 366 0103.
Corrosion and deposits form the issue with AdBlue, whereas petrol means lost protection. So if it was AdBlue, say so — and see its own Burnedge page.
What makes one Burnedge petrol in a diesel task cost more than the next
The four situations above are four separate tasks, so no single quote for this would be fair. Mostly, your cost moves with which situation you're in. The proportion counts next, meaning how much of that tank is petrol, and then the location of the car and whether reaching it is safe for a van.
Three questions come first, before quoting, rather than after — what got in, how much, has it run — and this is the reason. Given the answers, you get a straight figure instead of a range.
About Burnedge and where it is
Burnedge is a village in Greater Manchester, situated on the riverside at an elevation of 188 metres, with detached housing being the predominant type of accommodation. Burnedge lies approximately 9 miles from Manchester and 167 miles from London, making it a relatively accessible rural community. Burnedge is surrounded by other small settlements, including Green Gate, Buersil Head, and Pleasant View, and has a population of around 781 residents.
Burnedge and Greater Manchester: where our fuel drain cover reaches
Green Gate, Buersil Head and Pleasant View are among the spots near Burnedge that the same vans work, answering petrol in diesel calls across Burnedge's OL postcode area. A forecourt, a supermarket car park, a lay-by or your own driveway are all spots our engineers drain, and the vehicle doesn't need to come to us.
In Burnedge and still at the petrol pump?
In that case, you could not be in a better position. Turned off it stays; then ring.