Should You Worry? Petrol in a Diesel Car in Felixstowe
Unstarted? Then less worried than you probably feel. Till your ignition primes the pump, your starter turns, or the vehicle is driven, petrol in a diesel tank simply rests there and does no harm. Which makes the truthful reply to the first Felixstowe question — "have I wrecked it?" — normally no. To keep the car that way, ring Petrol in Diesel and leave your motor switched off. What petrol actually does to a diesel, how to gauge how far it has gone, and how to stop it from happening again: that's the remainder of this page.
The motor and petrol in a diesel: what happens
On its way through a motor, diesel has two tasks. It burns, and before it combusts it lubricates. What keeps the surfaces inside the high-pressure pump and your injectors from wearing down against one another is the diesel passing through them — they are built to very fine clearances.
Poorly at the first, not at all at the second: that is petrol. The rattling comes from petrol being designed not to ignite when compressed, which is exactly the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips away the lubrication your system depends on, and any pump running on such a mix is wearing itself.
The shape of the issue is plain once you put those together. The damage is done by movement, not by contact. All a tank with petrol in it amounts to is a fuel fault. Whatever a worn pump sheds travels on, borne by your fuel, into the fuel injectors downstream, which is why a pump that has been working on the petrol is where a mechanical issue starts.
Four scenarios our technicians see in Felixstowe: how bad is petrol in a diesel?
Filled up, and never started: no case is better. On a forecourt, and genuinely only there, the petrol is still limited to the tank — since anywhere else the vehicle was driven to get to it. The job is draining and flushing on the spot.
Ignition on, or started for a moment. Your system has been bled, and so petrol has left the tank and reached your filter and your lines. Drain, flush, see to your filter: still usually easy.
Those few miles driven were the pump labouring on fuel thinned by petrol throughout. How hard your car was driven counts as much as how far, and this work covers your tank, the lines, the fuel filter and clean fuel through the whole system. Driving the children to Fairfield Infant School is one kind of trip. Driving as far as Colchester, under 25 miles away, makes a very different task — as does any miles on the M11, under 50 miles from Felixstowe, with the engine labouring hard the whole time.
It protested, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone ragged. What you are hearing is your engine reporting fuel that no longer acts like diesel. Stop wherever you are — the verge on Cobbold Road, a lay-by, a side street — and leave the vehicle there. Lasting damage is very uncommon when a car is pulled over early, and the fuel drain and flush-through that still go first take care of it.
Petrol in a diesel myths Felixstowe motorists hear
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." Topping up takes out nothing; it gives you a fuller tank of the same mixture. That guidance presumes a diesel fuel system handles petrol by percentage. It doesn't.
Not so: a modern diesel copes with a bit of petrol. Rather, the reverse. Lubrication counts more on newer diesels, not less, since their fuel passes through more precise parts at higher pressure.
Myth: "If it starts and drives, there is no damage done." This is the one that fools motorists. A petrol motor fed diesel generally won't run, so the motorist stops and the harm stops with them. Whilst your pump wears, a diesel fed petrol usually starts, idles and drives away as if nothing has happened. Fine and running aren't the same at all.
Myth: a two-stroke additive lets you to drive home. It was an old workaround, meant for another fault. None of what petrol weakened is put back by it — and afterwards, that tank still contains that petrol.
The next start sends petrol back round the pump from your lines and your filter, where some of that ends up once the engine has been run. That's why a DIY tank drain does not sort it — a myth. Emptying petrol into a can by the kerbside is also truly risky.
How petrol ends up: petrol in a diesel
Carelessness is rarely the cause, and no one means to do it. A diesel nozzle generally will not go into a petrol car, yet the slimmer petrol nozzle goes into the filler of a diesel almost without resistance — so forecourts make this one error simple, and just in one direction.
When routine and the car stop matching, it happens. Hire cars, courtesy cars, and vehicles that are new to you. Two motors on one drive, one petrol, one diesel. A familiar forecourt with the pumps in a different order. A train to catch, and a rushed fill en route to the nearest station. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is precisely the moment it takes place. With rain, a call arriving, or children to deal with, your hand simply does what it has always done.
Next time you fill up around Felixstowe: avoiding petrol in a diesel
- Not every forecourt in the UK follows green for unleaded and black for diesel, even if most usually do. Check the pump's label; the colour is only a clue.
- Check your filler flap. Plenty of motors state the fuel inside the flap or on the cap. Look at it on your first fill in any motor you don't know.
- Mark the key. In a home with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of intending to remember.
- It sounds daft and it works: on the first fill in a new or hired car, say "diesel" out loud before you lift the nozzle off the petrol pump.
- Thinking about something else is when this becomes an easy mistake to make, so put your phone away and keep your mind on the petrol pump.
- Some diesels have a filler designed to reject a petrol nozzle, and devices you can add exist for cars without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop checking the pump.
- Less petrol means a thinner mix, so stop the moment you realise — though remembering that your next stage is unchanged. It is still not to fire it up.
Already put petrol in a diesel in Felixstowe?
Then the order of things is short. Starting it is out, and so is turning on your ignition. If you are still at the forecourt — Esso or anywhere else — ask the staff to help you push the car away from the pump. Then call 0333 366 0103 and tell us what was put in, roughly how much, and whether it has run.
If it was AdBlue and not petrol, say so. That's a different fault — corrosion and deposits instead of lost protection — and it has its own page for Felixstowe.
Why one petrol in a diesel job around Felixstowe costs more than another
A fair single quote does not exist here: four scenarios, four separate tasks. Which of them you are in is chiefly what shifts your cost. Two things follow that: the petrol that went in as a share of what that tank takes, then the spot the vehicle is in and whether a van can get to it safely.
That is why our technicians ask three questions before costing rather than after: what got in, how much, and if it's run. The answers turn a range into a straight figure.
About Felixstowe itself
Felixstowe is a coastal town in Suffolk, situated on the eastern coast of England, with an elevation of around 22 metres above sea level. Felixstowe lies approximately 70 miles from London and 19 miles from the nearby city of Colchester, with neighbouring areas including Walton and Old Felixstowe. Felixstowe has a population of around 16,106 people, predominantly living in detached housing. Felixstowe is also home to the major Port of Felixstowe, a significant container port facility.
Across Suffolk and in Felixstowe: fuel drain cover
Felixstowe sits in the IP postcode area, and the teams that answer petrol in diesel calls there work the locations around it as well — Walton, Old Felixstowe and The Port of Felixstowe among them. A forecourt, a supermarket car park, a lay-by or your own drive are all locations we drain, and the vehicle does not need to move to us.
Felixstowe: still at the petrol pump?
Then, you could not be in a better position. Keep it off. Ring.