Claggan: Put Petrol in a Diesel Car?
Don't start the motor. If the fuel is still in your tank and the engine has not yet turned over, a fuel drain is nearly always all it takes — and that's settled in the coming few minutes, not by how much was put in. Petrol in Diesel drains and flushes wrongly fuelled cars where they stand, all over Claggan and the remainder of Highland, on the forecourt, by the roadside or on a driveway. We will tell you what your next step will be. Call us — this comes ahead of everything else.
Petrol in a diesel: what to do now
- Give a petrol engine diesel and it will typically refuse to run at all, so the motorist stops there and so does the damage. Feed a diesel petrol and the engine starts, it ticks over, it moves off — fine for several miles. Most people have that backwards, which is the bit they get wrong about petrol in a diesel specifically. So never start the car. And once started, do not trust it: your fuel system is wearing as you drive.
- Turning the ignition on usually primes that system, and priming is what pulls petrol out of your tank then into the pump and injectors. Those are the components diesel keeps lubricated on its way through, before it ignites. Petrol manages the burning and none of the protecting. Leave the ignition alone.
- That advice supposes a diesel fuel system accepts petrol by percentage. It doesn't. Pour diesel on top and nothing at all is removed; what you get is a larger tank of the same mixture. And no, the octane makes no difference — super unleaded is just petrol.
- Sit tight if it is wise to. Hazards on, ignition off, keep the vehicle. Wherever you have stopped — the verge on Carn Dearg Road, anywhere — an awkward location for us is better than a started motor, and nothing is easier for us to sort than a car that never moved.
- Know where you are before calling. A postcode starting PH33 6, and the name of whatever is closest to you. Otherwise our van circles rather than turning up.
- Three answers shape the whole call-out: the fuel you put in, the ballpark volume of it, and if anything has been running since. Our line is 0333 366 0103.
The trip back would close to double it, for no reason at all. One commute has already put a real load of petrol-thinned diesel through the high-pressure fuel pump of your Volkswagen Golf. So keep the car where it sits. Call us from the platform if that is simpler — nobody needs you hovering over the vehicle outside Fort William while we get on, and tonight is better than finding out on Monday.
We are in car parks like the one outside Aldi a lot, and it is hardly ever the fuel that complicates them. It is that bay. Vehicles both sides. Trolleys stacked up behind. Sometimes a height barrier at the way in, which settles if a technician gets to you at all. So tell us how boxed in you are when you ring, and which way the vehicle is facing. If there is no space to work alongside your BMW 3 Series, we move it without the engine. That's not pedantry over a few seconds: starts prime things, blend comes out of the tank toward your pump, and a motor moved twice for a roomier space is gradually a harder job than one nobody touched.
Don't chance it. The trip home from Railway Social Club is quite possible, which is exactly the issue — a diluted tank does not stop a diesel starting or pulling away, it just grinds the parts the fuel is meant to protect. Phone, and let the Ford Focus stay where it stands.
About as well as this goes, once the motor has turned: away from the pumps, receipt read, and your diesel Mercedes E-Class parked close to Ben Nevis War Memorial Plaque hardly two streets on. Phone us, then leave it off. A short distance does truly help. It was still a start and still a drive, though, and so your filter and your pump have had diluted fuel through them — hence flushing the lines instead of only clearing that tank.
The slimmer petrol nozzle slides into a current diesel filler neck with almost no resistance at all, which makes this mechanical rather than slapdash. New places see most of it for that reason. So: fuelled up by An Drochaid without thinking, in a diesel Peugeot 208 you have had for two days? Phone us where you are. Hire and courtesy cars usually get driven further before anyone spots it, and mileage settles how much petrol ends up at the fuel injectors.
At the forecourt: removing petrol from a diesel
A large part of the work is completed at a forecourt, as that is where it usually starts. We operate on petrol station forecourts all the time, with the owner's permission, and so if you're still at Gleaner that's typically where this drain happens.
Nowhere else other than a forecourt can this be spotted with your motor still untouched. Everywhere else — a car park, a driveway, a lay-by — the vehicle was started and driven to get there, which means fuel was drawn from your tank, through the fuel filter and into the high-pressure pump. That's not a calamity, and we can still sort it out where it sits. It does mean the lines and the fuel filter need rinsing as well as the tank, and that is settled by the few seconds between reading the receipt and reaching for the keys.
Out from the pump, the next driver can get past — so yes, let the attendants help you move it. Well worth doing. Four car lengths isn't worth a restart.
Areas our team reach near Claggan
Inverlochy, Fort William, Lochyside, Caol, Camaghael — all of these on our trips that bring us across to Claggan as well, a residential suburb.
There are dedicated pages for the majority of locations in Highland, and the ones mentioned above are merely the nearest neighbours — so yours being absent from that list means nothing whatsoever about if our technicians come. Near a boundary, or somewhere a satnav misreads? Call us and ask rather than guessing.
The ground the page spans is on our map. The car never needs to travel to us. Our technicians work over every bit of it — kerbside, forecourts, driveways, car parks.
Stranded by the kerbside near Claggan
Not everybody has a decent spot to pull over. Set off, then realised? Landed along the verge of The Corries, or parked in some lay-by with the hazard lights flashing? That is a common call here. Not an unusual one.
Okay where you are? Remain by it. Not fine? Move out and clear of it. It will often oblige. A diesel running on petrol limps along quite willingly, and that is the problem: fire it up to reach somewhere safer and the blend goes further into your fuel system with every mile travelled. We will bring our van to a difficult location without any bother, and for your car that's much better than driving on.
Already run it? Petrol in a diesel over a couple of miles
Here is where your M9 counts, over 50 miles out of Claggan. A misfilled diesel will usually take you onto it and some way along before anything feels wrong, and the signs when they come are usually lost power, a lumpy idle and smoke instead of a neat stop.
Never restart it to move it. Pull off at the next safe exit then turn off. On a longer run — anything near the over 50 miles to the closest city — take it the mixture has been through the fuel filter, your pump and the fuel injectors, and tell us when you ring. It changes what our engineers bring.
About Claggan
Claggan is a small suburban area situated on the coast of Highland, Scotland, with a population of around 1499 people. Claggan sits at an elevation of 15 metres, looking out over the surrounding coastline. Claggan is characterized by its semi-detached housing and is located near other communities such as Inverlochy and Lochyside. Claggan is also within driving distance of the city of Inverness, which is approximately 55.7 miles away.
Our job in Claggan, step by step
- The replies change the work, which is why our engineers ask before giving a price: what went in, how much of it, and whether your engine has run.
- The polluted mixture is pulled from the tank.
- Lines cleaned, filter cleaned. Whatever is left later isn't the thing that caused the problem.
- Your system gets bled, on fresh diesel.
- It is started with fresh diesel in it, and our technicians check that it's running smoothly.
From that point, you are ready to drive away. Our engineers do all of it wherever the car has stopped, which means it never needs to go to a workshop, and if it has been caught early, it is very rare for there to be long-term damage.
AdBlue in the diesel tank instead, in Claggan?
AdBlue instead of petrol? Then the opening step is unchanged — the motor stays off — while the issue beneath it is a different one altogether. Thinned diesel, and no protection left for the fuel system that depends on it. That's petrol. Rust and build-up are what a diesel tank gets instead, since AdBlue is urea in water.
AdBlue removal around Claggan has a page of its own with the detail on it, including why it is often the more significant of the two. Our technicians handle both.
Paying for a petrol-in-diesel drain around Claggan
Truthfully, no single figure fits on a page like this. The job changes. Here is what varies it:
- This is the big one: whether the motor has been started, or driven.
- The tank's capacity, set against how much of the wrong fuel went into it.
- AdBlue or petrol, whichever was put in.
- Whether our van can safely get to your vehicle and work on it, which hinges on where the car is.
Tell us what your vehicle is, how much got in, and if the motor has run. A straight answer comes back, not a range. If it isn't pressing — the vehicle is at home and going nowhere — is fine too.
Questions our technicians hear about petrol in diesel around Claggan
At a petrol station in Claggan, can you do a fuel drain there?
Yes — forecourts are where a good share of this takes place. Our engineers work at Morrisons and the other forecourts locally regularly, with the station's consent — tell us which one you are at when you ring and we will tell you whether we can work there.
A couple of litres of petrol in a diesel — too much?
Litres aren't the yardstick. Proportion is, and a lot more than either, it matters whether anything has been run. What decides how much work is needed is if that mix has been drawn through the system — because although five litres in a nearly empty tank is a separate case from five in a full one, either way that's the question.
Petrol in my diesel, and I have driven the vehicle
Stop sensibly. Off. Nothing after that. Not restarting it is the single most helpful thing available to you now. Driving does shift the issue out of the tank and into your pump and injectors, yes, and it stays salvageable much more commonly than motorists assume.
My warranty — does a fuel drain void it?
It's not an alteration, and so a drain and flush carried out properly doesn't invalidate a manufacturer's warranty. Another reason to leave it turned off: running a diesel on petrol is the thing likelier to cause a disagreement with one.
Two-stroke oil in the tank, and then home?
What petrol has thinned is not restored by two-stroke oil, which is an old fix for a separate issue. So no. Petrol remains in that tank afterwards, whatever else goes in, and your pump gets no respite from it.
Main dealers and petrol in a diesel
No. We drain and clean your car wherever it is, so there's no need to bring it to a franchised dealer.
Still with your vehicle?
The motor remains off.
Already driven it? Then pull over somewhere safe, turn off, then let it remain that way. This is recoverable from much more frequently than drivers fear, and a stationary, cold vehicle is the best position to be in.
At the kerbside, on the forecourt or at home — mobile fuel draining in Claggan and throughout Highland.