Petrol in a Diesel Car in Calderstones: How Worried Should You Be?
Not started? Then less anxious than you probably feel. Everyone around Calderstones begins with "have I ruined it?", and the fair answer is usually no: petrol resting inside your tank of a diesel remains harmless until priming, cranking or driving pulls it into your fuel system. Keep it that way: leave the motor off and call Petrol in Diesel. The remainder of this page sets out what petrol really does to a diesel, how to tell how far it has got, and how to make sure it does not happen to you again.
Petrol in a diesel: what does it do to your engine?
On its way through a motor, diesel has two jobs. It protects to begin with, and after that does it burn. Your high-pressure pump and your injectors are designed to extremely fine tolerances, and your diesel passing through them is what stops those surfaces from grinding against one another.
Poorly at the first, not at all at the second: that is petrol. Being less viscous than diesel, petrol strips away the lubrication a fuel system needs, leaving a pump running on the mixture wearing itself. It's also made to resist igniting under compression — the opposite of what a diesel needs — which is why you hear the clattering.
Put these together and the shape of the issue is plain. Not contact but circulation is what causes the harm. Petrol in the tank is a fuel issue. Whatever a worn pump sheds travels on, carried by your fuel, into the injectors downstream, which is why a pump that has worked on the petrol is where a mechanical problem begins.
How bad is petrol in a diesel? Four situations our engineers see around Calderstones
Filled up, and not started: no case is better. Only that tank has petrol in it, and so the job is emptying your tank and rinsing the fuel system where the car sits. This situation can only truly take place on a forecourt: anywhere else, the car got there by being driven.
The ignition turned on, or a short start. Petrol has left your tank and reached your filter and the lines, because the fuel system has been primed. Usually little more than draining, cleaning and seeing to the filter, and so still easy.
Driven a few miles. Now your pump has spent these miles labouring on diluted fuel. The work is your tank, the fuel lines, the fuel filter and clean fuel through the entire system, and how hard your car was driven matters as much as how far. On the school run to Booker Avenue Junior School, the miles is short. Very different a second time: a trip to Liverpool, under 5 miles away, or any distance on the M62, under 3 miles from Calderstones, where the motor never stopped working hard.
Driven on until it complained — knocking, smoke, an uneven idle, a soft throttle. The fuel is not acting like diesel any more, and your engine is saying so. Leave it where it stops: a lay-by, a quiet street, the verge on Ballantrae Road. What comes first is still the fuel drain and flush-through, and that sorts it out, with lasting damage very unusual when a car is stopped early.
Calderstones people and that petrol in a diesel myths they hear
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." Nothing is removed when you top up — your tank simply carries more of the same blend. Percentage isn't how a diesel fuel system copes with petrol, however much that advice supposes.
"Newer diesels can handle a little petrol" — a myth, and nearer the reverse. Finer parts and higher pressure are how a newer diesel runs its fuel, and that makes the protection count more, not less.
The myth that catches motorists off guard: if it starts and drives, it must be unharmed. Feed diesel to a petrol motor and it generally will not run, so the driver stops — and the harm stops with them. Feed petrol to a diesel and it usually starts, idles and pulls away like nothing happened — all while its pump is wearing. Fine and running are not the same at all.
An old fix for a distinct issue is behind this one. Myth: "Add some two-stroke oil and drive it home." None of what petrol weakened is put back by it — and later, that tank still holds the petrol.
If your engine has been run, part of that petrol is in the fuel filter and the lines, not the tank — and your next start pulls it right back through the pump. So the myth "drain that tank yourself and you're sorted" doesn't stand up. It's also truly risky to drain petrol into a can at the roadside.
How does petrol in a diesel take place?
No one does it on purpose, and it's rarely carelessness. One way only, since of the nozzles: the slimmer petrol one slides inside a diesel filler with almost no resistance, whereas the diesel one mostly will not fit a petrol car. That's how the forecourt makes it easy.
Habit and your car getting out of step is how it occurs. Courtesy car, hire car, or a motor that is new. Two motors on one driveway, one petrol, one diesel. Your ordinary forecourt, its pumps suddenly in a different order. A hurried fill on the way to Mossley Hill with a train to catch. Years of petrol motors behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that's when. Throw in rain, a phone call or a back seat full of children, and your hand repeats what it has always done.
Calderstones motorists: how to prevent petrol in a diesel next time
- The label is what counts, and so read the pump rather than the colour: in the UK unleaded handles are usually green and diesel black, but not on each forecourt.
- Inspect your filler flap. Many motors state the fuel inside the flap or on the cap. Look at it on your first fill in a car you don't know.
- One of each in the home? Mark the key to the diesel — a bright fob, a sticker — because meaning to remember is not enough.
- Before the nozzle leaves the pump the first time you fill a hired or new vehicle, say "diesel" out loud. Silly, perhaps, yet it does the trick.
- While you are thinking about something else, this is an easy mistake to make — so put the phone away.
- Add-on devices exist for motors without one, and some diesels come with a filler that won't take a petrol nozzle. Useful — but a backstop at best, never a reason to stop checking the label.
- Spotting it halfway? Stop at once. A thinner mix follows from less petrol in the tank, yet the next step remains the same: don't start the vehicle.
Put petrol in a diesel around Calderstones already?
Then the order of things is short. Starting it is out, and so is turning on the ignition. Yet on the forecourt, at Tesco or anywhere else? Ask the attendants to help you push the car away from the pump. Then call 0333 366 0103 and tell us what went in, roughly how much, and if it has run.
If it was AdBlue instead of petrol, say so. That is a different issue — corrosion and deposits rather than lost protection — and it has its own page for Calderstones.
Why one petrol in a diesel task around Calderstones costs more than another
Four separate jobs sit behind the four scenarios above — which is why there is no honest single price. Which of them you are in is chiefly what moves the cost. After that it's the proportion — how much petrol got in against how much your tank takes — and after that where your car is and whether our van can get to it safely.
Ahead of any quote, not after, come three queries: the fuel that got in, its amount, and whether it's run. That is why. Their answers are what turn a range into one firm number.
About Calderstones, for a moment
Calderstones is a suburban area in Merseyside, situated near the coast and approximately 3.9 miles from Liverpool. Calderstones has a relatively low elevation of 49 metres and is characterised by semi-detached housing. Calderstones is close to other nearby places such as Mossley Hill, Allerton, and Aigburth, and is home to around 2276 residents.
Fuel drain cover across Merseyside, Calderstones included
Mossley Hill, Allerton and Aigburth are among the spots near Calderstones that the same teams work, answering petrol in diesel calls across Calderstones's L postcode area. A forecourt, a supermarket car park, a lay-by or your own drive are all locations we work, and the vehicle does not need to move to us.
At the petrol pump in Calderstones, right now?
No position is better: that is where you now are. Turned off it remains; then phone.