How Worried Should You Be? Petrol in a Diesel Car in Ashley Park
Far less than you probably are, provided it has not been started. Everyone around Ashley Park begins with "have I ruined it?", and the fair answer is generally no: petrol resting inside your tank of a diesel stays harmless till priming, cranking or driving draws it into your fuel system. Leave the engine off then phone Petrol in Diesel — that keeps it like that. Read on for three things: the effect petrol has inside a diesel motor, the signs of how far it has spread, and the way to make sure you never repeat it.
Your engine and petrol in a diesel: what happens
Two tasks fall to diesel on its journey round a motor. It protects first, and after that does it burn. Your high-pressure pump and the injectors are built to very fine clearances, and the diesel passing through them is what stops those surfaces from wearing down against each other.
Poorly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump running on the blend wearing itself. It is equally made to resist igniting under compression — the opposite of what a diesel needs — which is why you get the knocking.
Put those together and the shape of the issue is clear. Not contact but movement is what does the harm. Any tank with petrol in it is a fuel problem. The start of a mechanical one is a pump that has been labouring on that petrol — and whatever a worn pump sheds moves on with the fuel to the injectors beyond it.
Ashley Park, petrol in a diesel: four situations, from mild to serious
Fuelled, and never started: no case is better. Being on a forecourt is what makes this possible: elsewhere, the vehicle has been driven there to begin with. With the petrol kept inside your tank alone, it's drained and purged on the spot, and nothing more is needed.
A brief spell of running, or just the ignition on. Petrol has left that tank and reached the filter and your lines, because the system has been bled. Still usually easy: drain, flush, and your filter seen to.
Driven a few miles. Now your pump has spent these miles running on diluted fuel. How hard your car was driven counts as much as how far, and this work covers your tank, your lines, the fuel filter and fresh fuel through the whole system. A school run to Ashley Church of England Primary School is one thing. Very different once more: a trip to Westminster, under 25 miles away, or any mileage on the M3, under 3 miles from Ashley Park, where the motor never stopped running hard.
Driven till it complained. Knocking, an uneven idle, smoke, a throttle that has gone soft. That is your engine telling you its fuel has stopped acting like diesel. Whether it's the verge on Ashley Road, a lay-by or a side road, stop there then leave it. The drain and flush-through still go first, and they take care of it: when a vehicle is stopped soon, lasting damage is very rare.
What Ashley Park motorists get told about petrol in a diesel — and the myths in it
Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. Nothing is removed by topping up — you are left with a bigger tank, still the same mixture. A diesel fuel system does not tolerate petrol by percentage in the way that advice presumes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the opposite. Protection matters more on modern diesels, not less, since their fuel passes through finer components at higher pressure.
This is the one that catches people. Myth: "If it starts and drives, there is no harm done." Feed diesel to a petrol motor and it generally will not run, so the motorist stops — and the damage stops with them. A diesel fed petrol normally starts, ticks over and drives away as if nothing has happened, whilst your pump grinds. Fine and running are not the same thing.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a different problem. What petrol has diluted stays thinned, and the petrol stays inside that tank anyway.
The next start sends petrol back round the pump out of your lines and the filter, where some of it ends up once your engine has run. That's why a DIY tank drain doesn't leave you sorted — a myth. Clearing petrol into a can by the roadside is also genuinely dangerous.
How does petrol in a diesel take place?
No one does it on purpose, and it is rarely carelessness. The forecourt makes it easy: the petrol nozzle is the slimmer of the two, and it slips into a diesel filler with almost no resistance, while a diesel nozzle generally won't go into a petrol car at all. So the slip runs one way.
When routine and the car stop matching, it occurs. Courtesy car, hire car, or a vehicle that is new. Households running one of each, petrol and diesel. A familiar forecourt with the pumps in a different order. Fuelling up in a rush en route to Walton-On-Thames, with a train to catch. Years of petrol vehicles behind you, a diesel Volkswagen Golf in front of you at the forecourt for its first tank — that's when. Add rain, a phone call or a back seat full of kids, and the hand repeats what it has always done.
How to avoid petrol in a diesel at your next fill-up in Ashley Park
- Read the pump, not the colour. In the UK unleaded handles are normally green and diesel black, but not on each forecourt. The label is what counts.
- Plenty of vehicles state the fuel type inside your filler flap or on the cap, and so check it on the first fill in any motor you do not know.
- One of each in the household? Label your key to the diesel — a coloured fob, a sticker — since intending to remember isn't enough.
- "Diesel", out loud, before you pick up the nozzle — every time a new or hired car needs its first tank. It sounds silly. It works.
- Thinking about something else is when this becomes an easy mistake to make, so tuck your phone away and keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler built to reject a petrol nozzle, and add-on devices exist for vehicles without one. They are a safety net, not a reason to stop reading the petrol pump.
- Stop as soon as you realise. Less petrol inside your tank makes a weaker blend. It does not change what to do next, which is still not to crank it.
Put petrol in a diesel around Ashley Park already?
Then, there's just a short order of things. Don't switch your ignition on, and do not fire it up. Ask the attendants to help you roll it away from the pump if you are still at the forecourt, whether that's Texaco or somewhere else. Then ring 0333 366 0103 and tell us what got in, about how much, and whether it's run.
If it was AdBlue instead of petrol, say so. That is a different fault — corrosion and deposits rather than lost lubrication — and it has its own page for Ashley Park.
Ashley Park petrol in a diesel tasks: why one costs more than another
There's no fair single price for this, since the four situations above are four separate jobs. What shifts the cost is mostly which of them you are in. The proportion matters next, meaning how much of your tank is petrol, and then the location of the vehicle and whether getting to it is safe for a van.
Three questions come first, before quoting, rather than after — what was put in, how much, has it run — and this is the reason. Their answers are what change a range into one firm number.
About Ashley Park itself
Ashley Park is a suburban area in Surrey, situated inland at an elevation of 24 metres, approximately 15 miles from central London. Ashley Park is characterized by its predominantly flat housing stock, with many residents commuting to nearby cities. Ashley Park is close to several nearby places, including Walton-on-Thames, Ash Estates, and Lower Halliford. Ashley Park has a population of around 4197 people, according to recent estimates.
Across Surrey and in Ashley Park: fuel drain cover
Ashley Park waits in the KT postcode area, and the teams that answer petrol in diesel calls there work the locations around it as well — Walton-on-Thames, Ash Estates and Lower Halliford among them. Our technicians drain wherever the vehicle is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
In Ashley Park and still at the petrol pump?
Then you're in the best position there can be. Keep it off. Phone.