Blackwood: Put Petrol in a Diesel Car?
Do not fire up the motor. If the petrol is still sitting in your tank and the motor has not yet been started, a fuel drain is nearly always all it requires — and that's settled in the next few minutes, not by how much was put in. Petrol in Diesel drains and flushes wrongly fuelled cars where they are, all over Blackwood and the rest of North Lanarkshire, on the forecourt, at the roadside or on a drive. Phone before anything else happens, so you will hear what comes after that.
Your first five minutes: petrol in a diesel
- Whenever you drive, your pump and the fuel injectors wear down. That is why you don't start the car, and why you do not rely on it once it has started. The trick about petrol in a diesel in particular — the bit people get wrong — is that it pulls away happily for the first mile or two. Diesel in a petrol engine generally will not run at all, which stops the person and stops the harm with them. This one lets you keep going.
- Two tasks, diesel: it burns, and on the way through it keeps the injection pump and injectors lubricated. Petrol only handles the one. Which is why your ignition stays off also — flick it on and you frequently prime your system, and that's petrol exiting that tank for precisely those components.
- Do not weaken it. Diesel added on top removes nothing, so all you have is more of what was already there, since percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Just petrol. The grade makes no difference.
- Sit tight if it is safe to. Hazards on, engine off, leave the vehicle. Wherever you have stopped — the verge on Blackwood Road, anywhere — a difficult place for us beats a started diesel, and nothing is quicker for us to sort than a car that never shifted.
- Our van turning up rather than circling depends on two things: a postcode beginning G68 9, and whatever is closest to you with a sign on it. Keep both prepared before you dial.
- Three replies determine the entire call-out: the fuel you tipped in, the approximate volume involved, plus if anything has been going since. The number is 0333 366 0103.
Removing petrol from your diesel at a forecourt
The work kicks off at a forecourt, generally. Regularly it ends on site too. The drain generally takes place there and then. Still on the forecourt at Gulf? Given the station's permission, that's a spot our engineers work, and often.
At a forecourt, it gets spotted with your motor never fired, and no place else manages that. The few seconds between reading your receipt and going for your key settle how much needs cleaning. Anywhere other than the forecourt — a car park, a private drive, a lay-by — the car was started and driven to get there, so fuel was drawn from your tank, through the fuel filter then into the high-pressure pump. That means the fuel lines and your filter need rinsing as well as that tank. It is not a catastrophe, and we can still sort it out where the car is.
Staff will usually help out pushing it out from the pump, which lets the next customer get by. Accept the offer. Starting the car just for four vehicle lengths? Don't.
Easy, these ones, and the reason is the distance: a mile at easy throttle uses very little diesel. Petrol into a diesel BMW 3 Series somewhere around Blackwood, a boot full of shopping, and you sat at Aldi — phone. Getting out of that spot is not worth a restart. Your tank gets drained where it sits, your fuel lines purged, new diesel in, and you drive home.
Someone will tell you to shift the vehicle out of that gateway and fix it later. Please don't. A wrongly fuelled diesel Peugeot 3008 on the zig-zags at the local primary school is a hassle; the same vehicle fired up three more times to be polite is a fuel system and not a tank. Every restart primes the fuel lines and pulls more petrol past your filter then into the pump. Leave it there, let everyone moan, and give us a call.
What we will ask about is if the drive there was brief and cold, since that's where petrol is least able to burn fully — and anything that does not burn can slip past the piston rings then into the engine oil. Right up to the moment someone drives it home, a diesel Mercedes E-Class sitting in the parking area at the pub in the village carrying a tank of petrol in it is a simple job. Nothing deteriorates while it stands, and so park it there overnight then phone us next morning.
Seldom the problem, the place. On-street is the most common place our engineers work, and a narrow parking spot is far preferable to a car that has been driven somewhere more handy. What does help, when you phone from close to Broadwood Leisure Centre, is three things: the side the filler is on, whether our van can stand beside without blocking the road, and if anything has run since you filled up. Then the Audi A6 gets emptied, your filter changed where a workable one exists, the lines purged and clean fuel put through the whole system — since by now the worst of that is in the lines, not the tank.
Drain it and put new diesel in — that's the tip you will get, generally from a person sure of themselves, and it's half right. Do exactly that to a diesel Renault Captur near Broadwood Gymnastics and it would start, which is what makes the tip sound sensible. What takes place next is the trouble: your engine at once pulls the petrol still sitting in the fuel filter and the feed lines straight back through your pump, because draining a tank does nothing about fuel that has already left it. Phone us instead. Our engineers flush your system and take your filter off where the car has a serviceable one, which is the difference between the car being fixed and your car merely starting.
Places our vans cover around Blackwood
Blackwood is a residential suburb, so our technicians go out to the town and to anywhere around it on those same rounds: Smithstone, Westfield, Croy, Condorrat and Craigmarloch.
There are separate pages for nearly all towns across North Lanarkshire, and the ones listed above are merely the nearest neighbours — so yours being missing from this list tells you nothing at all about whether we come. Ring us to enquire instead of guessing, above all when you're on a boundary or anywhere your phone can't find.
That map shows the patch this page covers. Our technicians work roadside, on forecourts, on driveways and at car parks across all of that, and your vehicle never needs to travel to us.
Stuck on the kerbside in Blackwood
Not everyone has a suitable place to stop. A normal call for us and not a rare one: realised after setting off, finished up on the verge on B8048 or in a lay-by with the hazards on.
Out of the car while it isn't wise to wait there, by it if it is. It will often oblige. A diesel running on petrol limps along perfectly willingly, and that's the trouble: fire it up to get to somewhere better and that mixture goes further into the system with every mile travelled. However difficult the place, it is no problem for us to get to it, and that is much better for your car than driving on.
Run it already? Pull over, then read below
This is where the local M80 comes in, under 3 miles away from Blackwood. Some way along, and onto it in the first place: a misfilled diesel will usually manage both before anything feels wrong. What you get then is rarely a neat stop. Power ebbs away, the idle turns lumpy, and there may be smoke.
Get off at the first safe junction, switch off, and don't restart it to move it. Long drive? Anything approaching the under 10 miles to the closest city and you should suppose the lot — filter, pump, injectors, all of that reached by the contamination. Say that on the call, because it affects what goes in the van.
Where is Blackwood?
Blackwood is a suburban area situated on the outskirts of Glasgow, near the shores of a lake in North Lanarkshire, with a mix of detached housing and local amenities. Blackwood sits at an elevation of 63 metres, providing views of the surrounding countryside. Blackwood is located close to nearby places such as Smithstone, Westfield, and Croy, and is approximately 9 miles from Glasgow city centre. Blackwood has a population of around 1675 residents, living in predominantly detached homes.
Once our engineers reach you in Blackwood: what happens
- The responses shape the work, which is why our technicians ask before quoting: what got in, how much of it, and if the motor has run.
- The tank gets drained of it.
- Fuel lines are rinsed through and the filter cleared, leaving nothing in the fuel system that started any of this.
- Our technicians put new diesel in and prime your system.
- It's started with new diesel in it, and we confirm that it is running properly.
The vehicle is then ready for you to drive away. Long-term damage is very unusual when it has been caught soon, and since everything is done where the vehicle is, it never has to be taken to a garage.
AdBlue in a diesel tank around Blackwood is a different problem
The issue isn't the same, though the opening rule is — never crank it — if what was put in was AdBlue instead of petrol. Petrol does two things to diesel: dilutes it, and strips out the protection the system relies on. Rust and build-up are what a diesel tank gets instead, because AdBlue is urea in water.
AdBlue removal in Blackwood has a page of its own with the detail on it, including why it is usually the more significant of the two. Our engineers cover both.
How much is a petrol-in-diesel drain in Blackwood?
One figure wouldn't be fair here, since this is not one job. These are the things that shift it:
- Started? Driven? Either answer matters more than anything else on this list.
- Wrong fuel in, against what that tank takes — that ratio.
- AdBlue or unleaded, whichever was put in.
- Whether a van can sensibly reach your car and work on it, which hinges on where your car is.
A straight answer rather than a range is what you get for telling us three things: the vehicle, the quantity, and if it has run. For your car at home that is going nowhere and isn't urgent, is fine too.
Petrol in diesel: common queries in Blackwood
At a petrol station around Blackwood, can you do a fuel drain there?
Yes — forecourts are where a large portion of this happens. Often, provided the site consents: BP, plus every other forecourt nearby. Say on the phone where exactly you have stopped. Whether we can work in that place is something we answer there and then.
How much petrol in a diesel is too much?
Litres aren't the yardstick. Ratio is, and a lot more than either, it matters whether anything has been run. An almost empty tank with five litres in it, against a full one with the same five: distinct scenarios, definitely. Either way, the work needed comes down to one thing, which is if your fuel system has had that blend drawn through it.
I drove the car after putting petrol in my diesel. What next?
Switch off somewhere safe, and keep it that way after you stop. It is salvageable much more commonly than motorists fear, even though driving is what shifts the trouble from the tank into the pump and injectors — and the single most helpful thing you can do now isn't restart it.
Is a fuel drain going to void my warranty?
No. Carried out properly, emptying and purging is no change at all, and the warranty from your manufacturer is unaffected by it. Running a diesel on petrol is the thing more likely to cause an argument with one, which is another good reason to leave the car switched off.
Could I put some two-stroke in and just drive?
What petrol has weakened is not restored by two-stroke oil, which is an old remedy for a separate problem. So no. Petrol stays in that tank afterwards, whatever else goes in, and your pump gets no respite from it.
Do I need a main dealer for petrol in a diesel?
Wherever the car is, our engineers drain and clean it there, so a drive to the main dealer does not come into it.
Still with your car?
Keep it shut off.
Driven it already? Then somewhere safe, stop, switch off, and no restarting the vehicle later. Cold, still, going nowhere: that's the best place to be in. Drivers fear this far more than they need to.
At the kerbside, on the forecourt or at home — on-site fuel draining around Blackwood and across North Lanarkshire.