Ashley Heath: Petrol in a Diesel Car? How Worried to Be
Probably less than you are now — as long as no one has started the car. Petrol resting in a diesel tank does nothing to your motor until something draws it through the system — the ignition priming your pump, your starter, or driving on its own. So the truthful answer to the first question everyone around Ashley Heath asks, "have I ruined it?", is normally no. To leave it like that, ring Petrol in Diesel then leave the motor switched off. What petrol really does to a diesel, how to gauge how far it has travelled, and how to keep it from happening a second time: that's the rest of this page.
Petrol in a diesel: what does it do to the motor?
On its way through an engine, diesel does two tasks. It burns, and before it ignites it protects. Built to very fine tolerances, your injectors and the pump rely on your diesel flowing through them to stop their surfaces wearing against one another.
The second job petrol doesn't do at all, and the first it does poorly. The rattling comes from petrol being made not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is runnier than diesel, it strips out the protection the system depends on, and any pump running on that mix is wearing itself.
Combined, those make the shape of the trouble plain. Not contact but movement is what does the harm. All a tank with petrol in it amounts to is a fuel issue. The beginning of a mechanical one is a pump that has been running on that petrol — and whatever a worn pump sheds travels on with the fuel to the fuel injectors beyond it.
Ashley Heath, petrol in a diesel: four cases, from mild to major
Fuelled, and never started: no case is better. On a forecourt, and really only there, the petrol is still limited to your tank — because anywhere else the car was driven to reach it. The job is draining and purging on the spot.
The ignition turned on, or a brief start. Petrol has left your tank and reached your filter and your lines, since the fuel system has been primed. Still generally simple: drain, flush, and your filter seen to.
A couple of miles driven, and your pump has spent each of them labouring on thinned fuel. Mileage is only half of that; how hard it was driven matters equally. Either way the work includes that tank, your lines, the fuel filter and clean fuel through the entire circuit. Driving the kids to Hugo Meynell CofE (VC) Primary School is one sort of trip. Very different a second time: a trip to Stoke-on-Trent, under 15 miles away, or any miles on the M6, under 10 miles from Ashley Heath, where your engine never stopped labouring hard.
Driven on till it complained — clattering, smoke, a ragged idle, a dead throttle. That's your motor telling you its fuel has stopped behaving like diesel. Whether it's the verge on Tower Road, a lay-by or a side road, stop there then leave it. The drain and flush still go first, and they take care of it: if a car is stopped soon, long-term damage is very unusual.
Ashley Heath people and that petrol in a diesel myths they hear
It will not be fine. The myth: "Fill it the rest of the way with diesel and it'll be." Nothing is removed by topping up — you're left with a fuller tank, still the same mix. A diesel fuel system doesn't accept petrol by percentage in the way that guidance assumes.
If anything, the opposite is true. Myth: "A newer diesel can cope with a bit of petrol." A newer diesel runs its fuel through finer parts at higher pressure, which makes the protection matter more, not less.
"It starts, it drives, so there is no harm" — the myth that catches more motorists than any other. Feed diesel to a petrol motor and it usually won't run, and so the driver stops — and the damage stops with them. While the pump wears, a diesel fed petrol usually starts, idles and drives away as though nothing has happened. Running doesn't mean fine.
Not so: a two-stroke additive lets you to drive home. It is an old workaround, supposed for another issue. That petrol is still in the tank after that, and what it has thinned is not put back.
"Drain it yourself and you are sorted" — a myth, because after it's been running some petrol sits in your filter and lines, waiting to go right back through the pump at your next start. It is also really risky to drain petrol into a can at the kerbside.
How it happens: petrol in a diesel
It is rarely carelessness, and nobody does it on purpose. The petrol nozzle is the smaller of the two and slides into a diesel filler with almost no resistance; a diesel nozzle mostly won't go into a petrol vehicle at all. The forecourt makes it simple, and the mistake runs one way.
The moment routine stops matching the car is the moment it takes place. Courtesy car, hire car, or a car that is brand new. A household with one petrol and one diesel on the drive. The pumps in a different order on a well-known forecourt. Filling up in a hurry on the way to Norton Bridge, with a train to catch. A new-to-you diesel Renault Megane, its first fuelling, and a motorist used to petrol: exactly when it occurs. With rain, a call arriving, or a car full of children to deal with, the hand just does what it has always done.
Next time you fill up around Ashley Heath: preventing petrol in a diesel
- Read the petrol pump, not the colour. In the UK unleaded handles are usually green and diesel black, yet not on each forecourt. The label is what matters.
- Many vehicles state the fuel inside the filler flap or on the cap, so check there on your first fill in a motor you don't know.
- One of each in the house? Mark the key to the diesel — a coloured fob, a sticker — because intending to remember is not enough.
- It seems daft and it does the trick: on your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the pump.
- Thinking about something else is when this becomes an easy mistake to make, and so put your phone away then keep your mind on the petrol pump.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler designed to reject a petrol nozzle, and add-on devices are available for the remainder. Count it as a backstop, and keep checking the pump.
- Stop as soon as you notice. Less petrol inside that tank makes a weaker blend. It doesn't change what to do next, which is still not to start the car.
Already put petrol in a diesel in Ashley Heath?
Short and simple, then, is the order of things. Leave it unstarted, with your ignition switched off too. The attendants at the forecourt — whether at Croxton Service Station itself or wherever you filled up — will usually help push it clear of the petrol pump if you ask. Next, 0333 366 0103. We will ask what went in, about how much, and if it's been run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost lubrication, make it a different problem — Ashley Heath has a page all for it.
Why one petrol in a diesel job in Ashley Heath costs more than another
There is no honest single price for this, because the four scenarios above are four separate tasks. Which of them you are in is mostly what shifts your cost. Where the car is counts too, and whether a technician can safely reach it, after the proportion of petrol to what that tank takes.
What was put in, how much, and if it has run — three queries our technicians ask before costing, not after, for exactly that reason. Those replies are what turn a range into one firm number.
About Ashley Heath, briefly
Ashley Heath is a suburban area in Staffordshire, situated inland at an elevation of 223 metres, with detached housing being the predominant type of accommodation. Ashley Heath lies approximately 10.9 miles from Stoke-on-Trent and is surrounded by nearby places such as Ashley Dale, Hookgate, and Jugbank. Ashley Heath has a population of around 1250 residents and is located in the West Midlands region, about 136.4 miles from London.
Fuel drain cover around Ashley Heath and across Staffordshire
Our vans answering petrol in diesel jobs in Ashley Heath, in the TF postcode area, equally work the spots near it, Ashley Dale, Hookgate and Jugbank among them. You need not bring the car to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all spots where we work.
At the petrol pump around Ashley Heath, right now?
In that case, you could not be in a better position. Keep it off. Ring.