Petrol in a Diesel Car in Ditton: How Worried Should You Be?
Less than you probably are, if it has not been started. Until your ignition primes your pump, the starter turns, or your car is driven, petrol in a diesel tank simply waits there and does nothing. Which means the honest reply to the first Ditton query — "have I ruined it?" — normally no. Leave the motor off then phone Petrol in Diesel — that keeps it like that. Further down, you will find what petrol really does inside a diesel, how far it may have got, and how to stop it happening to you a second time.
The motor and petrol in a diesel: what goes on
Two tasks fall to diesel on its journey through a motor. It combusts, and before it ignites it protects. Designed to very fine tolerances, your injectors and the pump depend on your diesel flowing through them to keep their surfaces from wearing against one another.
Of these two tasks, petrol handles the first poorly and the second not at all. Being less viscous than diesel, petrol strips away the lubrication a fuel system needs, leaving a pump running on the mixture to wear itself. It's equally made to resist igniting under compression — the reverse of what a diesel needs — which is where you hear the clattering.
Combined, those make the shape of the trouble clear. Contact doesn't do the damage — circulation does. A tank with petrol in it is a fuel problem. Once your pump has been labouring on that petrol, a mechanical fault has begun: whatever is shed by a pump that's wearing down is carried onward to the injectors with the fuel.
Petrol in a diesel around Ditton: how bad is it? Four situations
Fuelled up, not once started. The best case there can be. Being at a forecourt is what makes this possible: elsewhere, the car has been driven there to begin with. With that petrol kept in the tank alone, it's emptied and flushed right where it stands, and nothing more is needed.
Started for a moment, or just the ignition on. Once primed, your system has pulled petrol from your tank up to the fuel filter and the fuel lines. Drain, flush, deal with the filter: still usually straightforward.
Your pump has spent a couple of miles on diluted fuel — that's what driving the car meant. Mileage is only half of it; how hard it was driven counts equally. Either way the work runs to that tank, the fuel lines, the fuel filter and fresh fuel through the entire circuit. Short trips, like the school run to Ditton Church of England Junior School, are one thing. Very different again: a trip to Southend-on-Sea, under 25 miles away, or any miles on the M20, under a mile from Ditton, where the motor never stopped running hard.
Driven till it protested. Knocking, a lumpy idle, smoke, a throttle that has gone soft. That's your engine telling you its fuel no longer is acting like diesel. Pull up wherever you are — the verge on New Road, a lay-by, a side street — and leave the car there. The fuel drain and flush-through still go first, and they deal with it: when a vehicle is stopped quickly, permanent damage is very rare.
Ditton motorists and that petrol in a diesel myths they hear
Myth: topping up to full with diesel makes it fine. It doesn't. Topping up removes nothing; it gives you a fuller tank of the same mixture. A diesel fuel system does not tolerate petrol by percentage in the way that advice assumes.
Myth: "A modern diesel can cope with a bit of petrol." If anything, the opposite. Lubrication matters more on newer diesels, not less, because their fuel passes through smaller components at higher pressure.
Myth: "If it starts and drives, there is no damage done." This is the one that fools drivers. Diesel in a petrol motor usually means a motor that will not run: the driver stops, and so does the damage. A diesel fed petrol usually starts, idles and drives away as if nothing has happened, whilst the pump grinds. Running isn't the same as fine.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a separate problem. None of what petrol weakened gets put back by it — and afterwards, the tank still holds the petrol.
"Drain it yourself and you're sorted" — a myth, since after it has been running some petrol sits in the fuel filter and lines, ready to go right back through the pump at your next start. On top of that, petrol cleared into a can by the road is genuinely risky.
How does petrol in a diesel take place?
A careless moment is rarely the cause, and nobody means to do it. The forecourt makes it simple: the petrol nozzle is the slimmer of the two, and it slides into a diesel filler with almost no resistance, while a diesel nozzle mostly won't go into a petrol car at all. So the slip runs one way.
The moment routine stops matching the vehicle is the moment it happens. Any car that is new to you — a hire car, on loan as a courtesy car, or brand new. Households running one of each, petrol and diesel. The pumps in a different order on a familiar forecourt. Filling up in a hurry on the way to Aylesford, with a train to catch. Precisely the moment it happens: after years of driving petrol, a driver fills a diesel Volkswagen Passat for the first time. The hand does what it has always done when you add rain, a phone call or a back seat full of children.
How to avoid petrol in a diesel on your next fill-up around Ditton
- Read the petrol pump, not the colour. In the UK unleaded handles are normally green and diesel black, yet not on every forecourt. The label is what counts.
- Check the filler flap. Plenty of motors state the fuel inside the flap or on the cap. Look at it on the first fill in any car you do not know.
- One of each in the household? Mark the key to the diesel — a coloured fob, a sticker — because intending to remember isn't enough.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the pump. It seems daft and it does the trick.
- Mistakes like this are easy to make while your mind is on something else, and so the phone goes away.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler designed to refuse a petrol nozzle, and add-on devices exist for motors without one. They are a safety net, not a reason to stop checking the petrol pump.
- The moment you notice, stop: less petrol inside that tank makes a thinner mix. What to do next does not change, though — still do not start the car.
Petrol already in a diesel around Ditton? Start here
In that case, there is just a short order of things. Do not switch the ignition on, and do not fire it up. The staff at the forecourt — whether at Esso itself or wherever you filled up — will usually help roll it clear of the pump if you ask. What got in, about how much, and whether it's run: tell us those when you ring 0333 366 0103.
If it was AdBlue rather than petrol, say so. That is a different issue — corrosion and deposits instead of lost protection — and it has its own page for Ditton.
Ditton petrol in a diesel jobs: why one costs more than another
Four separate jobs lie behind the four scenarios above — which is why there is no honest single price. Chiefly, your cost shifts with which one you are in. Beyond that it's the proportion — how much petrol got in against how much that tank holds — and after that where the car is and whether a technician can get to it safely.
That is why we ask three queries before pricing rather than after: what got in, how much, and whether it has run. Their replies are what change a range into one firm number.
About Ditton
Ditton is a village situated on the riverside in Kent, with an elevation of around 10 metres above sea level. Ditton lies approximately 29 miles from London and is close to the nearby places of Millhall, Larkfield, and New Hythe. Ditton has a population of around 2724 people and is characterised by predominantly semi-detached housing. Ditton is also near the city of Southend-on-Sea, which is about 20 miles away.
Fuel drain cover around Ditton and across Kent
Petrol in diesel jobs in Ditton — part of the ME postcode area — go to vans that likewise cover the places around it, Millhall, Larkfield and New Hythe included. A forecourt, a supermarket car park, a lay-by or your own drive are all spots our engineers drain, and the car doesn't need to move to us.
Ditton: still at the petrol pump?
No position is better: that is where you now are. Switched off it remains; then ring.