Should You Worry? Petrol in a Diesel Car in East Grinstead
Less than you probably are, provided it hasn't been started. Till your ignition primes your pump, the starter turns, or your vehicle is driven, petrol in a diesel tank just sits there and does no harm. Which makes the truthful reply to that first East Grinstead query — "have I ruined it?" — normally no. Leave your engine off then phone Petrol in Diesel — that is how you keep it like that. Read on for three things: the effect petrol has inside a diesel motor, the clues of how far it has got, and ways to make sure you don't do it again.
What petrol in a diesel does to the motor
On its way through a motor, diesel has two tasks. It lubricates first, and after that does it burn. What keeps the surfaces inside the high-pressure fuel pump and your injectors from grinding against each other is the diesel passing through them — they're designed to very fine gaps.
Of those two jobs, petrol manages the first badly and the second not at all. It's runnier than diesel and takes away the protection your fuel system rests on, and so a pump running on a petrol blend is a pump wearing itself. And petrol is made to resist igniting under compression, which is the opposite of what a diesel needs from its fuel. That is where the clattering comes from.
Taken together, they show what shape the trouble has. The harm is done by movement, not by contact. A tank with petrol in it is a fuel problem. After the pump has been labouring on that petrol, a mechanical problem has started: anything shed by a pump that is wearing down is carried onward to the injectors with your fuel.
Petrol in a diesel in East Grinstead: how bad is it? Four cases
The best case there is: filled up, not once started. Only the tank has petrol in it, and so the job is draining your tank and rinsing the system where the vehicle stands. This situation can only really happen on a forecourt: anywhere else, your car got there by being driven.
Your ignition switched on, or a brief start. Petrol has left your tank and got to the filter and the lines, since the fuel system has been bled. That's usually still an easy task — a drain, a flush, and your filter seen to.
Driven a couple of miles. Now your pump has spent those miles running on diluted fuel. Miles is only half of that; how hard it was driven matters equally. Either way the work includes your tank, the fuel lines, your filter and clean fuel through the entire system. Short trips, such as the school run to Estcots Primary School, are one thing. Very different a second time: a run to Brighton and Hove, under 25 miles away, or any distance on the M23, under 10 miles from East Grinstead, where the motor never stopped working hard.
Rattling, an uneven idle, smoke, a throttle gone soft: driven until it complained. The motor is telling you your fuel is no longer acting like diesel. Stop where you are — on the verge on Judges Terrace, at the kerb, down a side road — and don't move it. The fuel drain and flush still go first, and they take care of it: if a vehicle is pulled over early, lasting damage is very rare.
What East Grinstead drivers get told about petrol in a diesel — and the stories in it
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Nothing is removed by topping up — you're left with a bigger tank, still the same mix. The assumption behind that advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
If anything, the opposite is true. Myth: "A newer diesel can cope with a bit of petrol." Finer components and higher pressure are the way a current diesel runs its fuel, and that makes the protection matter more, not less.
Myth: "If it starts and drives, there is no damage done." This is the one that catches people. Diesel in a petrol motor usually leaves a motor that won't run: the motorist stops, and so does the harm. Whilst the pump wears, a diesel fed petrol normally starts, idles and drives away as if nothing has happened. A running engine doesn't mean fine.
Myth: "Add some two-stroke oil and drive the vehicle home." It is an old workaround for a separate problem. It doesn't put back what petrol has diluted, and the petrol is still inside the tank afterwards.
The next start sends petrol back round the pump out of the lines and the filter, where some of that ends up after the engine has run. That's why a DIY tank drain doesn't leave you sorted — a myth. Clearing petrol into a can by the kerbside is also really risky.
Petrol in a diesel: how does it occur?
It is seldom carelessness, and no one does it on purpose. The forecourt makes it easy: the petrol nozzle is the slimmer of the two, and it slips into a diesel filler with almost no resistance, whilst a diesel nozzle mostly won't go into a petrol motor at all. So the mistake runs one way.
The moment routine stops matching the vehicle is the moment it takes place. Hire cars, courtesy cars, and cars that are new to you. Two motors on one drive, one petrol, one diesel. The pumps in a different order on a well-known forecourt. A train to catch, and a hurried fill en route to the nearest station. Years of petrol vehicles behind you, a diesel Renault Clio in front of you at the forecourt for its first tank — that is when. With rain, a call coming in, or children to deal with, your hand simply does what it has always done.
Next time you fill up in East Grinstead: preventing petrol in a diesel
- Not every forecourt in the UK keeps to green for unleaded and black for diesel, even if most generally do. Read the petrol pump's label; the colour is only a hint.
- Many motors state the fuel type inside your filler flap or on the cap, so check there on your first fill in any vehicle you don't know.
- Label the key. In a home with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of meaning to remember.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" out loud before you lift the nozzle off the pump. It sounds daft and it does the trick.
- Thinking about something else is when this becomes an easy mistake to make, and so tuck the phone away and keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to reject a petrol nozzle, and add-on devices are available for motors without one. They are a backstop, not a reason to stop reading the petrol pump.
- Spotting it halfway? Stop there and then. A thinner blend follows from less petrol inside your tank, yet the next stage stays the same: do not fire it up.
Put petrol in a diesel in East Grinstead already?
Short and simple, then, is the order of things. Don't turn the ignition on, and do not crank it. Still at the forecourt, at JET or anywhere else? Ask the attendants to help you push the car clear of the petrol pump. Then call 0333 366 0103 and tell us what got in, roughly how much, and if it's run.
Say so if it was AdBlue instead of petrol: it is a separate problem, with its own page for East Grinstead, since AdBlue brings corrosion and deposits instead of lost lubrication.
Why one petrol in a diesel job in East Grinstead costs more than another
There is no fair single quote for this, because the four scenarios above are four separate jobs. Which of them you are in is chiefly what moves the cost. The ratio counts next, meaning how much of your tank is petrol, followed by the location of your car and whether reaching it is safe for our van.
That is why we ask three questions before costing rather than after: what went in, how much, and if it has run. Their replies are what change a range into one firm number.
About East Grinstead, for a moment
East Grinstead is a town in West Sussex, situated in the inland area of the South East region, with an elevation of around 133 metres. East Grinstead lies approximately 27 miles south of London and 21.6 miles north of Brighton and Hove, near the communities of Sunnyside, Blackwell, and Baldwins Hill. East Grinstead has a population of around 20,277 people and is characterised by predominantly detached housing.
East Grinstead and West Sussex: where our fuel drain cover reaches
East Grinstead waits in the RH postcode area, and our vans that answer petrol in diesel calls there work the locations around it as well — Sunnyside, Blackwell and Baldwins Hill among them. A forecourt, a supermarket car park, a lay-by or your own drive are all places our engineers work, and the car does not need to move to us.
Still at the petrol pump around East Grinstead?
In that case, you couldn't be in a better position. Phone, and keep it turned off.