Petrol in a Diesel Car in Spindle Point: How Worried Should You Be?
If it hasn't been started, worry less than you likely are. "Have I ruined it?" is the first question anyone in Spindle Point asks, and the truthful answer is usually no, because petrol resting in a diesel tank hurts nothing until it's drawn through the fuel system — by ignition priming, by your starter, or by being driven. To leave it that way, phone Petrol in Diesel and leave the engine switched off. What petrol really does to a diesel, how to judge how far it has travelled, and how to keep it from happening a second time: that is the rest of this page.
Petrol in a diesel: what does it do to the engine?
Two tasks fall to diesel on its route through a motor. Oiling comes before burning; it does both. Your high-pressure pump and the fuel injectors are designed to extremely fine tolerances, and your diesel passing through them is what stops those surfaces from wearing down against one another.
Poorly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, leaving a pump running on the mixture 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.
Put those together and the shape of the trouble is plain. The harm is done by circulation, not by contact. Where that petrol is only inside your tank, it is an issue of fuel, nothing more. A pump that has been working on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds moves on with the fuel to the injectors downstream.
How serious is petrol in a diesel? Four situations we see around Spindle Point
Filled up, and never started: nothing beats it. Being on a forecourt is what makes this the case: elsewhere, the vehicle has been driven there to begin with. With the petrol held inside the tank alone, it is emptied and cleaned right where it stands, and nothing more is needed.
Started for a second, or just your ignition on. Petrol has come out of that tank and got to the filter and the fuel lines, since the system has been primed. Usually little more than emptying, purging and sorting the filter, and so still easy.
Driven a few miles. Now your pump has spent these miles labouring on diluted fuel. Tank, lines, filter, then clean fuel run through the whole system: that's the work, and the way the car was driven counts as much as the miles. Driving the kids to St Paul's CofE Primary School, Stalybridge is one kind of trip. Any distance on the M67, under 3 miles from Spindle Point, means the engine working hard throughout, and a run to Manchester, under 10 miles away, is a very different task as well.
It protested, and only then stopped: smoke, rattling, a throttle gone soft, an idle gone lumpy. The motor is telling you the fuel is no longer acting like diesel. Pull up where you are — on the verge on Staley Hall Road, at the kerb, down a side road — and do not move it again. The fuel drain and flush-through still go first, and they deal with it: if a car is pulled over soon, lasting damage is very uncommon.
What Spindle Point people get told about petrol in a diesel — and the stories in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." Topping up removes nothing; it gives you a fuller tank of the same mixture. The idea behind that advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
"Current diesels can handle a little petrol" — a myth, and nearer the reverse. A newer diesel runs its fuel through smaller components at higher pressure, which makes the protection count more, not less.
The myth that catches drivers off guard: if it starts and drives, it must be unharmed. The motorist of a petrol engine fed diesel normally has no choice but to stop, because it will not run, and the damage stops there. 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. Being able to run is not proof of being fine.
Myth: "Add some two-stroke oil and drive the car home." It is an outdated fix for a distinct issue. The petrol is still in the tank afterwards, and whatever it has diluted isn't put back.
Myth: "Drain your tank yourself and you're sorted." After your engine has run, some of the petrol is no longer in your tank: it is in the fuel filter and the fuel lines, and it goes straight back through your pump on the next start. Draining petrol into a can at the kerbside is also genuinely hazardous.
Petrol in a diesel: how does it occur?
On purpose? Never. Through carelessness? Seldom, if ever. One way only, since of the nozzles: the narrower petrol one slides inside a diesel filler with almost no resistance, while the diesel one mostly will not fit a petrol car. That is how the forecourt makes it simple.
The moment habit stops matching the vehicle is the moment it happens. Courtesy car, hire car, or a car that's brand new. One petrol and one diesel on the driveway of the same household. Your usual forecourt, its pumps now in a different order. Filling up in a rush on the way to Stalybridge, with a train to catch. A new-to-you diesel Renault Clio, its first fuelling, and a motorist used to petrol: exactly when it occurs. Add rain, a phone call or a back seat full of kids, and your hand repeats what it has always done.
Next time you fill up in Spindle Point: avoiding petrol in a diesel
- Not every forecourt in the UK follows green for unleaded and black for diesel, though most generally do. Read the pump's label; the colour is only a hint.
- In a car you do not know, look inside the flap over your filler or at the cap before your first fill: many motors print the fuel there.
- One of each in the home? Mark your key to your diesel — a coloured fob, a sticker — because 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 seems silly and it works.
- Mistakes like this are simple to make whilst your mind is on something else, and so your phone goes away.
- Some diesels have a filler built to refuse a petrol nozzle, and devices you can add exist for vehicles without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop checking the petrol pump.
- Stop as soon as you notice. Less petrol in that tank makes a weaker mix. It doesn't change what to do next, which is still not to crank it.
Already put petrol in a diesel around Spindle Point?
Then the order of things is short. Do not switch the ignition on, and don't start it. If you're still on the forecourt — Texaco or anywhere else — ask the staff to help you push the vehicle away from the pump. Then call 0333 366 0103 and tell us what went in, about how much, and whether it has run.
Say so if it was AdBlue rather than petrol: it's a different issue, with its own page for Spindle Point, because AdBlue brings corrosion and deposits instead of lost lubrication.
What makes one Spindle Point petrol in a diesel task cost more than the next
There's no fair single quote for this, because the four situations above are four separate tasks. The scenario itself does most of the work of moving your cost. Next it is the share — how much petrol went in against how much the tank takes — and after that where the car is and whether a van can get to it safely.
What got in, how much, and if it's run — three questions our engineers ask before pricing, not after, for exactly that reason. Those replies are what change a range into one firm number.
About Spindle Point
Spindle Point is a suburban area located on the riverside in Greater Manchester, with a mix of semi-detached housing and local amenities. Spindle Point sits at an elevation of 151 metres, approximately 8.5 miles from Manchester city centre. Spindle Point is close to nearby places such as Brushes, Far Souracre, and Copley, and is part of the wider Manchester urban area. Spindle Point has a population of around 5274 residents.
Fuel drain cover around Spindle Point and across Greater Manchester
Petrol in diesel calls in Spindle Point — part of the SK postcode area — go to vans that likewise cover the locations round it, Brushes, Far Souracre and Copley included. No need to move the vehicle to us. Forecourts, supermarket car parks, lay-bys and your own drive are all spots we drain.
In Spindle Point and still at the petrol pump?
The best spot there is, then — that's where you are. Keep it off. Ring.