How Worried Should You Be? Petrol in a Diesel Car in Eastbourne
Not started? Then less anxious than you likely feel. "Have I ruined it?" is the first thing everyone in Eastbourne asks, and the truthful answer is normally no, because petrol left in a diesel tank harms nothing till it's dragged through your fuel system — by ignition priming, by the starter, or by being driven. To keep it that way, ring Petrol in Diesel and leave your engine alone. Keep reading for three things: the effect petrol has inside a diesel motor, the clues of how far it has spread, and the way to make sure you never do it again.
What petrol in a diesel does to the motor
Two tasks fall to diesel on its route round a motor. Before it burns, it lubricates — and then it combusts. What stops the surfaces inside the high-pressure fuel pump and the injectors from grinding against each other is your diesel passing through them — they're built to very fine clearances.
The second job petrol does not do at all, and the first it does badly. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump on the mixture to wear itself. It is equally made to resist igniting under compression — the opposite of what a diesel needs — which is why you get the knocking.
Seen together, they make clear the shape the issue has. Not contact but circulation is what does the damage. A tank with petrol in it is a fuel issue. Whatever a worn pump sheds travels on, carried by your fuel, into your injectors downstream, which is why a pump that has been working on that petrol is where a mechanical issue starts.
Four scenarios our technicians see around Eastbourne: how bad is petrol in a diesel?
Filled up, never started. The best case there can be. The petrol is in the tank and just the tank, and the job is a drain and a flush where the vehicle stands. This is the one scenario that can only truly occur on a forecourt, since anywhere else the car has been driven to get there.
Ignition on, or started for a moment. Petrol has come out of that tank and reached the filter and your lines, since the system has been bled. Normally little more than draining, cleaning and sorting the fuel filter, so still easy.
Those few miles driven meant your pump working on fuel thinned by petrol the whole way. How hard your car was driven counts as much as how far, and the work takes in that tank, the lines, your filter and clean fuel through the whole circuit. On the school run to Bourne Primary School, the mileage is small. Any miles on the M23, under 50 miles from Eastbourne, means your engine working hard throughout, and a run to Brighton and Hove, under 25 miles away, is a very different task as well.
Driven until it complained. Clattering, a ragged idle, smoke, a throttle that has gone soft. That's your engine telling you its fuel has stopped acting like diesel. Leave it where it stops: a lay-by, a side street, the verge on South Street. A vehicle pulled over early very rarely has permanent damage, because the fuel drain and the flush-through, which still come first, take care of it.
Myths Eastbourne people hear about petrol in a diesel
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Nothing comes out when you top up — the tank just holds more of the same blend. A diesel fuel system does not tolerate petrol by percentage in the way that advice supposes.
Myth: "A newer diesel can cope with a bit of petrol." If anything, the opposite. A modern diesel runs its fuel through finer components at higher pressure, which makes the lubrication count more, not less.
One myth that catches drivers off guard: if it starts and drives, it must be unharmed. Diesel in a petrol motor generally means a motor that will not run: the driver stops, and so does the damage. Feed petrol to a diesel and it usually starts, ticks over and pulls away as if nothing has happened — all while its pump is wearing. Fine and running are not the same thing.
Myth: a two-stroke additive lets you to drive home. It was an old workaround, supposed for another problem. It does not put back what petrol has weakened, and that petrol is still in your tank later.
If your engine has been run, part of that petrol sits in the fuel filter and the fuel lines, not your tank — and your next start sends it right back through your pump. So the myth "drain that tank yourself and you're sorted" does not hold. Also, a can of petrol drained at the roadside is genuinely hazardous.
How does petrol in a diesel take place?
It is rarely carelessness, and nobody does it on purpose. One way only, since of the nozzles: the smaller petrol one slides inside a diesel filler with almost no resistance, whereas the diesel one generally won't fit a petrol motor. That is how the forecourt makes it straightforward.
The moment habit stops matching your car is the moment it happens. A motor that is new to you — hired, on loan as a courtesy car, or just bought. Two motors on one drive, one petrol, one diesel. A forecourt you know, but with its pumps laid out differently. Rushing for a train outside the nearest station and fuelling up en route. Years of petrol vehicles behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that's when. Your hand does what it has always done once you add rain, a phone call or a back seat full of children.
Preventing petrol in a diesel next time you fill up in Eastbourne
- The label is what matters, so check the petrol pump rather than the colour: in the UK unleaded handles are normally green and diesel black, yet not on every forecourt.
- Plenty of motors state the fuel type inside your filler flap or on the cap, so check it on the first fill in a vehicle you don't know.
- One of each in the household? Mark your key to the diesel — a bright fob, a sticker — because intending to remember is not enough.
- Before the nozzle leaves the pump the first time you fuel a hired or new vehicle, say "diesel" out loud. Silly, perhaps, but it works.
- 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.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler built to reject a petrol nozzle, and add-on devices are available for vehicles without one. They are a safety net, not a reason to stop reading the pump.
- Noticing it mid-fill? Stop there and then. A thinner mixture follows from less petrol in that tank, but your next step remains the same: do not crank it.
Already put petrol in a diesel around Eastbourne?
Then, there's only a short order of things. Do not start the vehicle, and don't turn your ignition on. Yet at the forecourt, at Gulf or anywhere else? Ask the staff to help you push the car away from the petrol pump. What went in, roughly how much, and whether it has run: tell us that when you call 0333 366 0103.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost protection, make it a separate problem — Eastbourne has a page just for it.
What makes one Eastbourne petrol in a diesel job cost more than the next
An honest single quote does not exist here: four situations, four separate jobs. What shifts your cost is chiefly which of them you're in. Where the car is matters too, and whether our van can safely get to it, after the proportion of petrol to what that tank holds.
Three queries come first, before any quote, instead of after — what got in, how much, has it run — and this is the reason. A range turns into a straight figure once those answers are in.
About Eastbourne, for a moment
Eastbourne is a seaside town in East Sussex, situated on the south coast of England, with a relatively low elevation of 16 metres above sea level. Eastbourne lies approximately 54 miles south of London and 19 miles east of Brighton and Hove, and is surrounded by nearby places such as Upperton, Meads, and Downside. Eastbourne has a population of around 30,745 people and is characterised by a high proportion of flat dwellings. Eastbourne is a popular destination due to its coastal setting and mild climate.
Across East Sussex and around Eastbourne: fuel drain cover
Petrol in diesel call-outs around Eastbourne — part of the BN postcode area — go to vans that also cover the places around it, Upperton, Meads and Downside among them. A forecourt, a supermarket car park, a lay-by or your own drive are all places our engineers drain, and the vehicle doesn't need to move to us.
In Eastbourne and still at the petrol pump?
No position is better: that is where you are. Leave the vehicle turned off, then ring.