Should You Worry? Petrol in a Diesel Car in Colwick
Probably less than you are now — provided nobody has started it. Everyone in Colwick starts with "have I ruined it?", and the honest answer is generally no: petrol left inside your tank of any diesel remains harmless until priming, cranking or driving pulls it into the fuel system. To keep the vehicle like that, phone Petrol in Diesel then leave the motor alone. What petrol actually does to a diesel, how to gauge how far it has travelled, and how to stop it from happening again: that's the remainder of this page.
Petrol in a diesel: what does it do to your engine?
Diesel has two tasks on its way through a motor. Oiling comes before burning; it does both. Built to extremely fine clearances, your injectors and the pump depend on your diesel flowing through them to stop their surfaces wearing against one another.
Of these two jobs, petrol handles the first poorly and the second never. Being less viscous than diesel, petrol strips out the protection a fuel system needs, so a pump on that mixture wearing itself. It's equally made to resist igniting under compression — the reverse of what a diesel needs — which is why you get the rattling.
The shape of the trouble is clear once you put those together. The harm is done by movement, not by contact. Where that petrol is only inside your tank, it is a fault of fuel, nothing more. After the pump has been running on that petrol, a mechanical problem has begun: anything shed by a pump that's wearing is carried downstream to your injectors with your fuel.
Colwick, petrol in a diesel: four situations, from mild to significant
Filled but never started — the best it gets. Being at a forecourt is what makes this possible: elsewhere, the vehicle has been driven there to begin with. With that petrol held inside your tank alone, it is cleared and rinsed right where it stands, and nothing more is needed.
The ignition switched on, or a short start. Petrol has left your tank and got to your filter and the fuel lines, since the fuel system has been bled. That's normally still a simple task — a drain, a flush, and your filter seen to.
A couple of miles driven, and the pump has spent every one of them running on weakened fuel. Tank, lines, filter, then clean fuel put through the whole circuit: that is the work, and the way the vehicle was driven counts as much as the mileage. On the school run to Colwick St John the Baptist CofE Primary Academy, the mileage is short. A run as far as Nottingham, under 5 miles away, is a very different task. So is any distance on the M1, under 10 miles from Colwick, where the engine has been running hard throughout.
Driven on until it protested — knocking, smoke, a ragged idle, a dead throttle. What you are hearing is the engine reporting fuel that no longer behaves like diesel. Whether it is the verge on Private Road No. 2, a lay-by or a side road, stop there then leave it. The fuel drain and flush still go first, and they sort it out: when a vehicle is pulled over early, permanent damage is very unusual.
Petrol in a diesel myths Colwick people hear
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. A fuller tank of the same mixture is all it gives, since topping up removes nothing. That guidance presumes a diesel fuel system handles petrol by percentage. It does not.
"Newer diesels can handle a little petrol" — a myth, and nearer the reverse. Protection matters more on newer diesels, not less, because their fuel passes through smaller components at higher pressure.
The myth that catches motorists out: if it starts and drives, it must be unharmed. The driver of a petrol motor fed diesel usually has no choice but to stop, since it will not run, and the harm stops there. Whilst the pump wears, a diesel fed petrol normally starts, idles and drives away as if nothing has happened. Being able to run is not proof of being fine.
Myth: "Add some two-stroke oil and drive it home." It is an outdated fix for a distinct issue. It doesn't put back what petrol has thinned, and that petrol is still inside the tank later.
Myth: "Drain your tank yourself and you are sorted." After the motor has been run, some of the petrol is no longer in the tank: it is in your filter and the fuel lines, and it goes straight back through your pump at the next start. Besides, petrol drained into a can by the road is truly dangerous.
Petrol in a diesel: how does it occur?
Carelessness is seldom the cause, and nobody means to do it. The petrol nozzle is the smaller of the two and slips into a diesel filler with almost no resistance; a diesel nozzle mostly will not go into a petrol motor at all. The forecourt makes it simple, and the error runs one way.
The moment habit stops matching your car is the moment it happens. Courtesy car, hire car, or a car that's brand new. One petrol and one diesel on the drive of the same household. Your ordinary forecourt, its pumps now in a different order. Fuelling up in a rush en route to Netherfield, with a train to catch. The first fill-up in a diesel Renault Megane after years of driving petrol is exactly the moment it occurs. Add a back seat full of children, a phone call or rain, and the hand takes over.
How to avoid petrol in a diesel on your next fill-up in Colwick
- A green handle for unleaded and black for diesel is normal in the UK — yet not on every forecourt. Trust the label on the pump, not the colour.
- The first fill in a strange vehicle is the time to check the filler flap — on it, or on the cap, many cars state which fuel they take.
- Label your key. In a house with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of meaning to remember.
- Before the nozzle comes off the pump the first time you fill a hired or new car, say "diesel" aloud. Silly, perhaps, but it works.
- Tuck your phone away. This is an easy mistake to make whilst you're thinking about something else.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler built to block a petrol nozzle, and add-on devices exist for the remainder. Treat it as a safety net, and keep checking the pump.
- Less petrol means a thinner blend, and so stop the moment you realise — though remembering that the next stage is unchanged. It's still not to fire it up.
Petrol already in a diesel around Colwick? Begin here
The order of things is short, then. Do not crank it, and do not turn your ignition on. Ask the staff to help you roll it away from the petrol pump if you are still on the forecourt, whether that's Sainsbury's or anywhere else. Then phone 0333 366 0103 and tell us what was put in, roughly how much, and if it has run.
Say so if it was AdBlue rather than petrol: it is a different problem, with its own page for Colwick, since AdBlue brings corrosion and deposits instead of lost lubrication.
One petrol in a diesel job in Colwick costs more than another. Why?
Four different jobs lie behind the four scenarios above — which is why there is no fair single price. The scenario itself does most of the work of moving your cost. Two things come after that: the petrol that was put in as a proportion of what that tank takes, then the spot the vehicle is in and whether our van can reach it safely.
Three questions come first, before any quote, instead of after — what went in, how much, has it run — and this is the reason. The answers turn a range into a straight figure.
About Colwick and where it is
Colwick is a suburban area in Nottinghamshire, situated on the River Trent at an elevation of around 24 metres. Colwick lies approximately 3 miles east of Nottingham city centre and is surrounded by nearby places such as Netherfield, Carlton, and Holme Pierrepont. Colwick has a population of around 3436 people and is characterised by predominantly terraced housing. Colwick is located in the East Midlands region, about 107.9 miles north of London.
Colwick and Nottinghamshire: where our fuel drain cover reaches
Netherfield, Carlton and Holme Pierrepont are among the locations near Colwick that the same vans work, answering petrol in diesel calls across Colwick's NG postcode area. You need not bring the car to us. Forecourts, supermarket car parks, lay-bys and your own drive are all places where we work.
In Colwick and still at the pump?
Then you are in the best place there can be. Keep it turned off, then ring.