Tilehouse Green: Petrol in a Diesel Car? How Worried to Be
Probably less than you are now — as long as no one has started the vehicle. Everyone in Tilehouse Green begins with "have I ruined it?", and the honest answer is usually no: petrol left inside your tank of any diesel remains harmless till priming, cranking or driving draws it into the system. Keep it that way: leave your engine off then phone Petrol in Diesel. Read on for three things: the effect petrol has inside a diesel motor, the clues of how far it has got, and the way to make sure you never do it again.
What petrol in a diesel does to the motor
Diesel does two tasks on its way through an engine. Lubricating comes before burning; it does both. Very fine tolerances are built into your injectors and your high-pressure pump, and just your diesel running through stops those surfaces grinding together.
Of those two tasks, petrol manages the first badly and the second not at all. A pump running on a petrol blend is wearing itself out, because petrol is runnier than diesel and takes away the protection your fuel system relies on. Petrol is also designed to resist igniting under compression — the opposite of what a diesel wants from its fuel — and that's where any clattering starts.
Put these together and the shape of the issue is plain. The damage is done by movement, not by contact. All a tank with petrol in it amounts to is a fuel fault. Whatever a worn pump sheds travels on, borne by your fuel, into the injectors further along, which is why a pump that has worked on that petrol is where a mechanical issue starts.
Tilehouse Green, petrol in a diesel: four cases, from mild to serious
Filled up, not once started. The best case there can be. Only your tank has petrol in it, so the task is emptying that tank and purging your system where the vehicle sits. This situation can only really occur at a forecourt: anywhere else, your car got there by being driven.
A moment's running, or just the ignition on. Petrol has come out of that tank and reached your filter and the fuel lines, because the fuel system has been bled. Normally little more than emptying, purging and sorting your filter, and so still simple.
Those few miles on the road meant the pump working on fuel diluted by petrol the whole way. How hard the car was driven matters as much as how far, and this work takes in your tank, your lines, your filter and fresh fuel through the whole circuit. A school run to St George and St Teresa Catholic Primary School is one matter. Any miles on the M42, under 3 miles from Tilehouse Green, means the motor has worked hard throughout, and a run to Birmingham, under 10 miles away, makes a very different job as well.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone uneven. That's your motor telling you its fuel no longer is acting like diesel. Whether it is the verge on Purnells Way, a lay-by or a side road, stop where you are and leave it. What comes first is still the drain and flush, and that takes care of it, with lasting damage very uncommon if a car is pulled over quickly.
Petrol in a diesel stories Tilehouse Green drivers hear
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Nothing comes out when you top up — your tank simply holds more of the same blend. The idea behind the advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
"Current diesels can handle a little petrol" — a myth, and nearer the opposite. At higher pressure, through finer components: that is how a newer diesel handles its fuel, so the lubrication matters for more, not less.
"It starts, it drives, so there is no harm" — the myth that catches more people than any other. Diesel in a petrol motor usually means a motor that won't run: the motorist stops, and so does the damage. Feed petrol to a diesel and it generally starts, idles and pulls away like nothing happened — all the while its pump is wearing. Running isn't the same as fine.
An outdated fix for a distinct issue is behind this one. Myth: "Add some two-stroke oil and drive the vehicle home." None of what petrol weakened is put back by it — and afterwards, the tank still holds the petrol.
The next start draws petrol back round your pump from the lines and the fuel filter, where some of it ends up after the motor has been run. That's why draining your tank yourself doesn't sort it — a myth. Also, a can of petrol filled at the kerbside is truly dangerous.
Petrol in a diesel: how does it happen?
No one does it on purpose, and it is rarely carelessness. The forecourt makes it easy: the petrol nozzle is the narrower of the two, and it slips into a diesel filler with almost no resistance, whilst a diesel nozzle mostly 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 is new to you — hired, on loan as a courtesy car, or brand new. One petrol and one diesel on the drive of the same household. A forecourt you know, but with its pumps laid out differently. A rushed fill en route to Dorridge with a train to catch. Years of petrol vehicles behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that is when. With rain, a call arriving, or a car full of children to deal with, your hand just does what it always has.
Avoiding petrol in a diesel next time you fill up around Tilehouse Green
- Not every forecourt in the UK follows green for unleaded and black for diesel, though most generally do. Check the petrol pump's label; the colour is just a hint.
- Check the filler flap. Plenty of cars state the fuel type inside the flap or on the cap. Look at it on the first fill in any motor you do not know.
- Mark the key. In a home with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of intending to remember.
- Before the nozzle leaves the pump the first time you fill a hired or new motor, say "diesel" out loud. Silly, perhaps, yet it does the trick.
- Thinking about something else is when this becomes an easy mistake to make, so tuck the phone away and keep your mind on the pump.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to block a petrol nozzle, and add-on devices are available for cars without one. They are a safety net, not a reason to stop reading the pump.
- Less petrol makes a weaker mixture, so stop the moment you realise — while remembering that your next step is unchanged. It is still not to crank it.
Already put petrol in a diesel in Tilehouse Green?
Short and simple, then, is the order of things. Do not crank it, and do not turn your ignition on. The attendants at the forecourt — whether at Esso itself or wherever you filled up — will normally help roll it away from the pump if you ask. Then phone 0333 366 0103 and tell us what was put in, about how much, and whether it's run.
If it was AdBlue and not petrol, say so. That's a different problem — corrosion and deposits rather than lost lubrication — and it has its own page for Tilehouse Green.
What makes one Tilehouse Green petrol in a diesel task cost more than the next
The four situations above are four separate jobs, so no single price for this would be honest. Which of them you're in is mostly what shifts your cost. Next it is the ratio — how much petrol went in against how much that tank takes — and after that where the vehicle is and whether our van can get to it safely.
Before any quote, not after, come three questions: the fuel that got in, its volume, and if it's run. That's why. A range becomes a straight figure when those replies are in.
About Tilehouse Green itself
Tilehouse Green is a suburban area in the West Midlands, situated near the River Blythe and characterised by its predominantly detached housing stock. Tilehouse Green sits at an elevation of around 133 metres, with nearby settlements including Knowle Grove and Knowle. Tilehouse Green is located approximately 9.5 miles southwest of Birmingham, making it a commuter base for the city. Tilehouse Green has a population of around 3684 residents, according to recent estimates.
Tilehouse Green and West Midlands: where our fuel drain cover reaches
The vans answering petrol in diesel calls in Tilehouse Green, in the B postcode area, equally work the places near it, Knowle Grove, Knowle and Bentley Heath included. A forecourt, a supermarket car park, a lay-by or your own drive are all places we drain, and your car does not need to move to us.
Still at the petrol pump around Tilehouse Green?
Then you're in the best spot there can be. Keep it off. Ring.