Petrol in a Diesel Car in West Rainton: How Worried Should You Be?
Not started? Then less worried than you probably are. Petrol sitting in a diesel tank does nothing to your engine until something draws it through the fuel system — the ignition priming the pump, the starter, or the drive on its own. So the honest answer to the first question everyone around West Rainton asks, "have I wrecked it?", is normally no. Petrol in Diesel is who to call, with the engine kept off, and so it remains that way. The remainder of this page covers what petrol actually does to a diesel, how to judge how far it has got, and how to make sure it doesn't happen to you a second time.
Inside your engine: what petrol in a diesel does
On its way through an engine, diesel does two tasks. Lubricating comes before burning; it does both. The high-pressure pump and your injectors are made to extremely fine clearances, and the diesel passing through them is what keeps those surfaces from wearing against one another.
Poorly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips away the lubrication a fuel system needs, leaving a pump on the mixture to wear itself. It is equally made to resist igniting under compression — the reverse of what a diesel needs — which is why you hear the knocking.
Combined, those leave the shape of the problem clear. Contact doesn't do the damage — circulation does. A tank with petrol in it is a fuel issue. After your pump has been running on that petrol, a mechanical problem has begun: anything shed by a pump that is grinding is carried onward to the injectors with your fuel.
Petrol in a diesel around West Rainton: how bad is it? Four situations
Fuelled up, never started. The best case there can be. Being at a forecourt is what makes this the case: elsewhere, your car has been driven there to begin with. With that petrol kept in the tank alone, it's emptied and cleaned on the spot, and nothing more is needed.
A moment's running, or just the ignition on. Petrol has come out of your tank and reached the filter and your lines, since the system has been primed. Drain, flush, deal with your filter: still usually easy.
Those few miles driven meant the pump labouring on fuel diluted by petrol the whole way. Tank, lines, filter, then clean fuel put through the entire system: that is this work, and the way the vehicle was driven matters as much as the mileage. On the school run to West Rainton Primary School, the distance is short. Driving as far as Durham, under 5 miles away, makes a very different job — as does any distance on the A1(M), under a mile from West Rainton, with the motor labouring hard the whole time.
Driven until it protested. Rattling, a lumpy idle, smoke, a throttle that has gone soft. What you are hearing is your motor reporting fuel that no longer behaves like diesel. Pull up wherever you are — the verge on Hall Lane, a lay-by, a side street — and leave the vehicle there. Permanent damage is very unusual when a car is pulled over quickly, and the drain and flush-through that still come first take care of it.
Stories West Rainton motorists hear about petrol in a diesel
False: topping up to full with diesel makes it fine. It does not. Nothing is removed by topping up — you are left with a bigger tank, still the same mixture. Percentage is not how a diesel fuel system tolerates petrol, whatever that advice assumes.
If anything, the opposite is true. Myth: "A current diesel can cope with a bit of petrol." More precise parts and higher pressure are the way a modern diesel runs its fuel, and that makes the protection count more, not less.
"It starts, it drives, so no harm done" — the myth that catches most motorists than any other. Diesel in a petrol motor normally leaves a motor that will not run: the motorist stops, and so does the damage. Feed petrol to a diesel and it generally starts, ticks over and pulls away as if nothing has happened — all the while its pump is wearing. Running doesn't mean fine.
Not so: a two-stroke additive makes it safe to drive home. It is an old workaround, meant for another fault. The petrol is still inside the tank after that, and whatever it has diluted isn't put back.
The next start draws petrol back round your pump out of the lines and the fuel filter, where some of that sits after the engine has run. That is why a DIY tank drain doesn't sort it — a myth. It's also truly risky to drain petrol into a can at the kerbside.
Why petrol in a diesel takes place so easily
Nobody does it on purpose, and it's rarely carelessness. The petrol nozzle is the narrower of the two and slides into a diesel filler with almost no resistance; a diesel nozzle generally will not go into a petrol car at all. The forecourt makes it simple, and the mistake runs one way.
When habit and the car stop matching, it occurs. Courtesy car, hire car, or a vehicle that is new. Two vehicles on one drive, one petrol, one diesel. A well-known forecourt with the pumps in a different order. Fuelling up in a rush on the way to Chester-Le-Street, with a train to catch. A new-to-you diesel Renault Megane, its first fuelling, and a motorist used to petrol: precisely when it happens. With rain, a call arriving, or a car full of children to deal with, your hand simply does what it always has.
How to avoid petrol in a diesel on your next fill-up around West Rainton
- The label is what counts, and so read the petrol pump instead of the colour: in the UK unleaded handles are normally green and diesel black, but not on each forecourt.
- Inspect the filler flap. Plenty of vehicles state the fuel type inside the flap or on the cap. Look at it on the first fill in any vehicle you do not know.
- Good intentions do less than a sticker or a fob in a bright colour on the diesel's key when a house has one of each. So label it.
- "Diesel", out loud, before you pick up the nozzle — each time a new or hired car needs its first tank. It seems daft. It works.
- Whilst you're thinking about something else, this is an easy mistake to make — so put the phone away.
- Some diesels have a filler built to block a petrol nozzle, and devices you can add exist for vehicles without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop reading the petrol pump.
- Spotting it mid-fill? Stop at once. A thinner mixture results from less petrol inside that tank, but the next stage remains the same: do not crank it.
Petrol already in a diesel in West Rainton? Begin here
Short and simple, then, is the order of things. Starting it is out, and so is switching on your ignition. Yet at the forecourt, at Gulf or anywhere else? Ask the attendants to help you push the car away from the petrol pump. Ring 0333 366 0103 next, with three answers — the fuel, the rough volume, and whether it's run.
Say so if it was AdBlue instead of petrol: it is a separate fault, with its own page for West Rainton, since AdBlue brings corrosion and deposits rather than lost protection.
West Rainton petrol in a diesel tasks: why one costs more than another
The four situations above are four separate tasks, so no single price for this would be fair. Which of them you're in is chiefly what moves your cost. Where the vehicle is counts too, and whether our van can safely reach it, after the proportion of petrol to what the tank takes.
That is why our technicians ask three queries before pricing instead of after: what got in, how much, and if it's run. Those answers are what turn a range into one firm number.
About West Rainton
West Rainton is a village in County Durham, situated inland at an elevation of 92 metres, approximately 4.2 miles from the city of Durham. West Rainton has a population of around 1039 residents, with semi-detached housing being the predominant type. West Rainton is located near other settlements such as Rainton Gate, Leamside, and Middle Rainton, and is about 235.6 miles north of London.
Fuel drain cover across Durham, West Rainton included
Rainton Gate, Leamside and Middle Rainton are among the locations around West Rainton that the same vans work, answering petrol in diesel call-outs across West Rainton's DH postcode area. Our technicians drain where the vehicle is — your own drive, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
At the pump in West Rainton, still?
In that case, you could not be in a better position. Ring, and leave it switched off.