How Worried Should You Be? Petrol in a Diesel Car in Wibsey Slack
Not started? Then less anxious than you probably are. Until your ignition primes the pump, the starter turns, or your car is driven, petrol in a diesel tank simply sits there and does nothing. Which makes the truthful reply to the first Wibsey Slack question — "have I ruined it?" — usually no. Petrol in Diesel is who to phone, with the engine left off, and so it remains that way. What petrol actually does to a diesel, how to gauge how far it's travelled, and how to stop it from happening again: that is the rest of this page.
Petrol in a diesel: what does it do to the engine?
Passing through a motor, diesel is doing two things at the same time. It lubricates to begin with, and only then does it burn. Extremely fine tolerances go into your injectors and your high-pressure pump, and only your diesel flowing through stops their surfaces grinding together.
Poorly at the first, not at all at the second: that's petrol. A pump working on a petrol mixture is wearing itself out, because petrol is runnier than diesel and takes away the protection the fuel system depends on. Petrol is also designed to resist igniting under compression — the opposite of what a diesel needs from its fuel — and that is where the rattling comes.
Put those together and the shape of the trouble is plain. The harm is done by movement, not by contact. Where that petrol is only in the tank, it is a problem of fuel, nothing more. Once your pump has been running on that petrol, a mechanical issue has started: whatever is shed by a pump that's grinding travels downstream to the injectors with your fuel.
Wibsey Slack, petrol in a diesel: four situations, from mild to significant
Fuelled up, not once started. The best case there is. The petrol is inside your tank and just the tank, and the job is a drain and a flush where the car sits. This is the one situation that can only really take place on a forecourt, since anywhere else the car has been driven to get there.
A moment's running, or merely your ignition on. The system has been bled, so petrol has left that tank and got to the filter and the fuel lines. That's normally still a straightforward task — a drain, a flush, and the fuel filter seen to.
Those few miles on the road were your pump running on fuel thinned by petrol the whole way. The work is your tank, your lines, your filter and fresh fuel through the entire circuit, and how hard the car was driven matters as much as how far. Driving the children to St Paul's CofE Primary School is one sort of trip. Any mileage on the M606, under 3 miles from Wibsey Slack, means the engine working hard throughout, and a run to Bradford, under 3 miles away, is a very different task as well.
Driven on till it protested — rattling, smoke, a lumpy idle, a soft throttle. The engine is telling you the fuel is no longer acting like diesel. Stop wherever you are — the verge on Reevylands Drive, a lay-by, a side street — then leave it there. Permanent damage is very rare if a car is pulled over quickly, and the fuel drain and flush that still come first sort it out.
Petrol in a diesel stories Wibsey Slack drivers hear
Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. A bigger tank of the same mixture is all you get, since topping up takes out nothing. A diesel fuel system doesn't accept petrol by percentage in the way that advice assumes.
Myth: "A modern diesel can cope with a bit of petrol." If anything, the reverse. Lubrication matters more on modern diesels, not less, because their fuel passes through more precise parts at higher pressure.
Myth: "If it starts and drives, there's no harm done." This is the one that catches motorists. Diesel in a petrol motor generally leaves a motor that won't run: the motorist stops, and so does the harm. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually does; meanwhile the pump grinds. Being able to run is not proof of being fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a distinct issue. That petrol is still in your tank afterwards, and what it has diluted isn't put back.
Once your engine has run, part of that petrol is in your filter and the lines, not the tank — and the next start sends it right back through your pump. So the myth "drain that tank yourself and you are sorted" does not hold. It is also truly dangerous to drain petrol into a can by the roadside.
Why petrol in a diesel takes place at all
A careless moment is seldom the cause, and no one means to do it. The forecourt makes it easy: the petrol nozzle is the smaller of the two, and it slides into a diesel filler with almost no resistance, while a diesel nozzle generally will not go into a petrol car at all. So the error runs one way.
The moment routine stops matching the vehicle is the moment it occurs. A vehicle that's new to you — a hire car, on loan as a courtesy car, or brand new. Two motors on one driveway, one petrol, one diesel. A forecourt you know, but with its pumps laid out differently. A train to catch, and a rushed fill en route to Low Moor. Years of petrol cars behind you, a diesel Renault Clio in front of you at the forecourt for its first tank — that's when. Your hand does what it has always done once you add rain, a phone call or a back seat full of kids.
Next time you fill up around Wibsey Slack: preventing petrol in a diesel
- The label is what matters, so read the petrol pump instead of the colour: in the UK unleaded handles are normally green and diesel black, but not on every forecourt.
- In a motor you do not know, look inside the flap over the filler or at the cap before the first fill: plenty of vehicles state the fuel type there.
- Label the key. In a home with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of intending to remember.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the pump. It sounds silly and it does the trick.
- Tuck the phone away. This is an easy mistake to make whilst you're thinking about something else.
- Some diesels come with a filler built to refuse a petrol nozzle, and devices you can add exist for motors without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop reading the petrol pump.
- Spotting it halfway? Stop there and then. A weaker blend follows from less petrol inside that tank, yet the next step remains the same: don't start the vehicle.
Wibsey Slack: already put petrol in a diesel?
Then the order of things is brief. Leave it unstarted, with your ignition off too. The staff on the forecourt — whether at Texaco itself or wherever you filled up — will usually help push it away from the petrol pump if you ask. Next, 0333 366 0103. We will ask what got in, roughly how much, and if it has been run.
AdBlue, not petrol? Then say so. Corrosion and deposits, not lost lubrication, make it a different problem — Wibsey Slack has a page all for it.
Why one petrol in a diesel job in Wibsey Slack costs more than another
There's no honest single quote for this, because the four situations above are four separate jobs. Mostly, your cost shifts with which situation you are in. Next it is the share — how much petrol went in against how much the tank takes — and then where your car is and whether a van can get to it safely.
Ahead of any quote, not after, come three queries: your fuel that was put in, the volume, and whether it's run. That's why. Given those replies, you get a straight figure rather than a range.
About Wibsey Slack and its setting
Wibsey Slack is a suburban area located near Bradford in West Yorkshire, sitting at an elevation of 252 metres. Wibsey Slack is characterized by its semi-detached housing stock and is situated close to nearby places such as Buttershaw and Slack Side. Wibsey Slack is approximately 2.2 miles from Bradford city centre and is part of the larger urban area surrounding the city. Wibsey Slack has a population of around 7591 residents.
Fuel drain cover across West Yorkshire, Wibsey Slack included
The teams answering petrol in diesel jobs around Wibsey Slack, in the BD postcode area, equally work the locations near it, Buttershaw, Slack Side and Wibsey included. Our technicians drain wherever your car is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
Still at the petrol pump in Wibsey Slack?
Then you're in the best spot there is. Turned off it remains; then phone.