Put Petrol in a Diesel Car in Potterton? Don't Start It
With that tank still holding the petrol and your engine not yet run, almost every job requires only a drain, so leave the engine off. That result is decided in the minutes immediately after the fill-up, rather than by the amount that went in. Across Potterton and the remainder of Aberdeenshire, Petrol in Diesel drains the vehicle and flushes it where it is, whether by a roadside, on a drive or at a forecourt. Contact us and then our technicians can explain what follows next before you try much else.
Petrol in a diesel: what to try next
- Do not fire it up — and don't depend on it if it starts. That is the thing most people have wrong about petrol in a diesel especially. A petrol engine given diesel normally just will not run, so the driver stops and the harm halts with them. A diesel filled with petrol generally starts, ticks over and drives off just fine for several miles. It's not fine. It is wearing the fuel system while you drive.
- Flicking the car's ignition on commonly primes the system, and priming is what moves petrol out of the tank then into the pump and injectors. Those are the components diesel keeps lubricated on its way through, before it combusts. Petrol does the burning and none of the oiling. Leave your ignition alone.
- Never put diesel on top to water down it. A diesel fuel system doesn't cope with petrol by percentage in the way that advice suggests, and topping up removes nothing — it only gives you a bigger tank of the same blend. The grade makes no difference either: super unleaded is simply petrol.
- Our team would much rather come to an odd location than have it started — so if you safely can, stay put. Nothing is quicker to sort than a motor that has not moved. On the verge on B999, that means hazards on and leave the vehicle.
- Know where you are before calling. A postcode starting AB23 8, and the name of whatever is nearest to you. Otherwise the van circles rather than turning up.
- What went in, roughly how much, and if the engine has fired — these three details settle the full job. Dial 0333 366 0103 and tell us.
Quarter past eight, a quick fill on the drive in, and you realise close to eleven — by that point your diesel Audi A4 has been parked outside Dyce for three hours. Ring us and leave the vehicle exactly where it is. The trip in is the bit that matters now, since diesel does two roles on its way through an engine: it burns, and before it ignites it greases the high-pressure pump and its injectors. Petrol manages the first and not the second. So those couple of miles were travelled with the pump running on a fuel that had lost a great deal of the protection it is made for — which is why the question we ask is how far you travelled, not how long your vehicle has been stood.
A diesel pump delivers fuel to demand, and a frantic morning run needs plenty — so three miles in the Dacia Duster feels like nothing and is not. Twenty to nine at the gates of the local primary school, already late, a receipt in your hand saying unleaded: hazards on, ignition off, phone us.
A diesel injection system works hydraulically as well as chemically: the fuel has to hold pressure, not only burn. Thin that fuel and pressure which should build then stay built bleeds past tolerances instead, leaving the motor a poorer, later, less even delivery than it was built about. Petrol thins diesel, and diesel has to be viscous enough to seal the close-fitting parts it flows through — that is the whole mechanism. It accounts for the normal Potterton Park call too: a diesel BMW 1 Series that drove out without fuss and came back down on power, rough at idle, perhaps smoking a little. None of which is the engine failing, and that's the bit worth hearing. Your fuel has stopped acting like diesel. Put your fuel right and it stops.
Three things help when you ring from near Mill Pond: which side the filler is on, whether our van can park beside without blocking the road, and whether the engine has run since you filled up. On-street is the commonest place we work, and so the spot itself is seldom the problem — we'd much rather deal with a cramped parking space than with a car that has been driven to somewhere more handy. We will drain your Vauxhall Astra, change your filter where there's a workable one, flush the lines then put clean fuel through the full circuit, as by this point the worst of it is sitting in your lines rather than in that tank.
Purged, not cleared — that's what a diesel Hyundai Tucson which got as far as Jesmond Gospel Trust Hall needs. Running a diesel puts the mix into the fuel filter, the lines, the pump and its rail, none of which empties with that tank, and so by now your tank holds the smaller part of the problem.
Can petrol be taken from a diesel on the forecourt?
Much of this job starts at the pump, which means a good chunk of that ends up completed on site. The drain normally gets done right there. Still on the forecourt at Esso? Given the site's permission, that is a place we work, and often.
A filling station is the only place it is stopped before the motor has run. The few seconds between seeing the receipt and reaching for your key determine how much requires rinsing. Anywhere other than a forecourt — a car park, a driveway, a lay-by — your car was fired up and driven to get there, so fuel was drawn from your tank, through your filter then into the high-pressure pump. That means the fuel lines and the filter require flushing as well as that tank. It is not a disaster, and our technicians can still deal with it where the vehicle sits.
Roll the car out of the way if the attendants offer, and they generally will. The next driver gets by the petrol pump, and that's worth doing. Rolling it four bays doesn't merit firing the motor.
Parts we reach around Potterton
Blackdog, Belhelvie, Millden, Hill of Keir, Corsehill — every one of those on our trips that take us across to Potterton itself, a coastal village.
There are pages for nearly all places around Aberdeenshire, and the ones mentioned above are simply the nearest neighbours — so yours being missing from the list says nothing whatsoever about if we come. Guessing is the habit to skip, especially on a border or anywhere a satnav struggles. Ring us to check.
That map marks the area this page spans. Roadside, forecourt, private drive, car park: all of that is ground our engineers cover, and none of that needs your vehicle to come to us.
Stranded by the roadside somewhere in Potterton?
The chance to stop somewhere safe doesn't come to everybody. Hazards on at a lay-by somewhere, or pulled onto the verge on Gourdie Park because you noticed after setting off — we take that call often enough that it is the normal kind.
Out of the vehicle when it isn't sensible to wait inside, by it when it is. Do not restart it to reach a safer place. It'll go — a diesel on petrol generally obliges — and each mile of obliging drags the mixture deeper into the fuel system. However awkward the location, it is no bother for us to get to it, and that's much better for the vehicle than driving on.
So you've driven it? Petrol in a diesel after some miles
Here is where the M90 comes in — over 50 miles away from Potterton. It will frequently get you onto it, and some way along, before you spot a thing. Then it's smoke, a lumpy idle and power falling away — not a clean stop. Misfilled diesels rarely give you one of those.
Take the next exit that is safe, pull up there, and don't restart it to move it. On a longer drive — anything close to the under 10 miles to the nearest city — assume the contamination has been through the fuel filter, the pump and the injectors, and say so when you ring. It changes what our technicians bring.
Where is Potterton?
Potterton is a small coastal village in Aberdeenshire, situated approximately 5.6 miles north of Aberdeen. Potterton sits at an elevation of around 58 metres, overlooking the North Sea. Potterton is characterized by its predominantly detached housing stock, reflecting its relatively affluent and rural nature. Potterton is close to nearby settlements such as Blackdog, Belhelvie, and Millden, and is home to around 550 residents.
Our call-out in Potterton, step by step
- Three things get checked before any price — your fuel that was put in, the amount, and if anything has been run since. Each answer changes the work.
- Away goes the polluted mixture.
- Our technicians purge the lines and clean your filter, so what is left in your system is not what caused the problem.
- Your system gets primed, on fresh diesel.
- Once it is started, our technicians confirm it runs properly on clean diesel.
That has it ready to drive away. Lasting damage is very rare when it has been caught soon, and as all of this is done where the vehicle is, it never needs to be taken to a workshop.
AdBlue in a diesel tank around Potterton is a distinct matter
The problem is not the same, though the first instruction is — don't fire it up — if what got in was AdBlue instead of petrol. Petrol weakens your diesel and takes away the lubrication the system relies on. AdBlue is urea in water, and in a diesel tank it causes rust and residue instead.
AdBlue removal in Potterton has a page of its own with the full story on it, including why it is often the more significant of the two. We cover both.
How much is a petrol-in-diesel drain around Potterton?
One figure wouldn't be honest here, because this isn't one job. These are the things that change it:
- Whether the motor has been started or driven. This is the main one.
- How much of the wrong fuel went in, judged against how much your tank holds.
- AdBlue or unleaded, whichever went in.
- Where is it? And can a van reach it and work there safely?
Tell us what the vehicle is, how much went in, and whether your motor has run. A straight answer comes back, not a range. Not urgent, with the vehicle at home and going nowhere? Then works.
Potterton drivers ask us these about petrol in diesel
Fuel drains on a Potterton petrol station forecourt
Yes, and it is where a large part of this work happens. Consent from the site is the condition. Given that, a forecourt like Asda is somewhere we're regularly, along with the rest of them locally — so name yours on the call and you will hear if working there's possible.
Is there a sensible amount of petrol in a diesel?
Proportion decides it instead of litres — and more than either, whether your motor has run. Five litres in a nearly empty tank is a distinct situation from five in a full one — but either way, the thing that settles how much work is required is whether that blend has been pulled through the fuel system.
I put petrol in my diesel and drove the car. What next?
Pull in somewhere sensible, turn off, then keep the vehicle off. Driving is what takes the problem from that tank into the pump and injectors — but it's salvageable much more commonly than motorists fear, and the single most useful thing you can do now is not restart it.
Will a fuel drain void my warranty?
It's not a modification, so a drain and flush carried out correctly doesn't cancel a manufacturer's warranty. Another reason to leave it switched off: running a diesel on petrol is the thing more likely to cause a disagreement with one.
Can I just add two-stroke oil and drive home?
Two-stroke oil solves a separate problem, and an old one at that. Nothing it does puts back what petrol diluted. No. Later? Still petrol in the tank, and a pump that has to put up with the stuff.
Main dealers and petrol in a diesel
You do not need one. Your car is drained and cleaned wherever it is, with no need to bring it to a main dealer.
You, and your vehicle, still together?
Keep the engine shut off.
Already driven it? Then pull in somewhere sensible, switch off, and let the car remain that way. Cold and stationary, a motor is in the best position available — and motorists fear this much more than the recovery rate warrants.
At the roadside, on the forecourt or at home — call-out fuel draining around Potterton and throughout Aberdeenshire.