How Worried Should You Be? Petrol in a Diesel Car in Ebblake
Unstarted? Then less worried than you likely feel. "Have I ruined it?" is the first thing anyone around Ebblake asks, and the truthful answer is normally no, because petrol resting in a diesel tank hurts nothing till it's dragged through the system — by ignition priming, by your starter, or by being driven. Petrol in Diesel is who to call, with your motor left off, and so it remains that way. The remainder of this page sets out what petrol actually does to a diesel, how to tell how far it has got, and how to make sure it does not happen to you again.
Petrol in a diesel: what does it do to the engine?
On its way through an engine, diesel does two jobs. It combusts, and before it burns it protects. The high-pressure fuel pump and your injectors are made to extremely fine tolerances, and the diesel passing through them is what keeps those surfaces from wearing against one another.
Of these two jobs, petrol handles the first poorly and the second not at all. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump on that mixture to wear itself. It's equally made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the clattering.
Put those together and the shape of the trouble is plain. It's movement that does the harm, not contact. Where that petrol is only inside your tank, it's a problem of fuel, nothing more. 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 injectors beyond it.
Petrol in a diesel around Ebblake: how serious is it? Four situations
Filled up, and not started: no case is better. Just your tank has petrol in it, so the task is clearing the tank and cleaning your system where the vehicle stands. This situation can only truly occur at a forecourt: anywhere else, your car got there by being driven.
Your ignition turned on, or a short start. Your system has been primed, so petrol has left your tank and reached the filter and your lines. Drain, flush, see to the filter: still normally simple.
Some miles driven, and the pump has spent each of them working on diluted fuel. Mileage is only half of that; how hard it was driven counts just as much. Either way this work includes the tank, the fuel lines, the fuel filter and fresh fuel through the entire circuit. Short trips, like the school run to Hillside Community First School, are one thing. Getting as far as Salisbury, under 15 miles away, makes a very different task — as does any miles on the M27, under 15 miles from Ebblake, with the motor labouring hard the whole time.
Driven until it protested. Clattering, a ragged idle, smoke, a throttle that has gone soft. The motor is telling you your fuel is no longer behaving like diesel. Pull up wherever you are — the verge on Heather Gardens, a lay-by, a side street — and leave the vehicle there. Permanent damage is very rare when a vehicle is stopped early, and the fuel drain and flush that still come first take care of it.
Ebblake motorists and the petrol in a diesel myths they hear
False: topping up to full with diesel makes it fine. It does not. A fuller tank of the same mix is all it gives, because topping up removes nothing. A diesel fuel system does not tolerate petrol by percentage in the way that advice assumes.
"Newer diesels can handle a little petrol" — a myth, and closer to the reverse. More precise parts and higher pressure are the way a newer diesel runs its fuel, and that makes the lubrication matter more, not less.
This is the one that fools drivers. Myth: "If it starts and drives, there is no damage done." Feed diesel to a petrol engine and it generally will not run, and so the motorist stops — and the damage stops with them. A diesel fed petrol usually starts, idles and drives away as though nothing has happened, whilst the pump grinds. A running engine does not mean fine.
An outdated fix for a distinct problem lies behind this one. Myth: "Add some two-stroke oil and drive the car home." It doesn't put back what petrol has thinned, and the petrol is still inside the tank later on.
"Drain it yourself and you're sorted" — a myth, because after it has been running some petrol sits in your filter and lines, waiting to go right back through the pump at the next start. Emptying petrol into a can by the roadside is also truly risky.
How it happens: petrol in a diesel
Carelessness is rarely the cause, and nobody means to do it. One way only, because of the nozzles: the smaller petrol one slides inside a diesel filler with almost no resistance, while the diesel one generally will not fit a petrol motor. That's how the forecourt makes it simple.
The moment habit stops matching your car is the moment it occurs. Hire cars, courtesy cars, and motors that are new to you. One petrol and one diesel on the drive of the same household. A forecourt you know, only with its pumps laid out differently. A train to catch, and a hurried fill en route to Christchurch. Years of petrol cars behind you, a diesel Volkswagen Golf in front of you at the forecourt for its first tank — that is when. Add rain, a phone call or a back seat full of kids, and your hand repeats what it has always done.
Next time you fill up around Ebblake: avoiding 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 counts.
- Check your 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 don't know.
- One of each in the home? Mark the key to your diesel — a coloured fob, a sticker — since meaning to remember is not enough.
- Before the nozzle comes off the pump the first time you fuel a hired or new motor, say "diesel" aloud. Daft, yes, yet it works.
- Put your phone away. This is an easy mistake to make whilst you are thinking about something else.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler designed to refuse a petrol nozzle, and add-on devices are available for vehicles without one. They are a backstop, not a reason to stop checking the petrol pump.
- Less petrol means a thinner mixture, and so stop the moment you notice — though remembering that the next step is unchanged. It is still not to start the vehicle.
Already put petrol in a diesel around Ebblake?
The order of things is short, then. Do not turn your ignition on, and do not fire it up. Ask the staff to help you roll it away from the petrol pump if you're still at the forecourt, whether that's Shell Verwood or anywhere else. What went in, about how much, and if it's run: tell us those when you call 0333 366 0103.
If it was AdBlue and not petrol, say so. That's a separate fault — corrosion and deposits and not lost lubrication — and it has its own page for Ebblake.
One petrol in a diesel task in Ebblake costs more than another. Why?
Four separate jobs lie behind the four scenarios above — which is why there is no fair single price. Chiefly, your cost moves with which one you are in. Beyond that it is the share — how much petrol was put in against how much your tank takes — and then where the vehicle is and whether a technician can get to it safely.
Before any quote, not after, we ask three queries: your fuel that went in, the amount, and whether it's run. That's why. Those answers are what change a range into one firm number.
About Ebblake
Ebblake is a suburban area situated on the riverside in Dorset, with a relatively low elevation of 27 metres. Ebblake lies near the city of Salisbury, approximately 13.9 miles away, and is also close to nearby places such as Verwood and Dewlands Common. Ebblake has a population of around 1754 people and is characterised by predominantly detached housing. Ebblake is located in the South West region of England, about 86.6 miles from London.
Fuel drain cover in Ebblake and across Dorset
Verwood, Crab Orchard and Dewlands Common are among the places around Ebblake that the same teams work, answering petrol in diesel jobs across Ebblake's BH postcode area. No need to bring the vehicle to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all places we drain.
Ebblake: still at the pump?
Nothing beats it: that is where you now are. Ring, and keep it switched off.