Should You Worry? Petrol in a Diesel Car in Newbolds
Not started? Then less anxious than you likely feel. Everyone in Newbolds begins with "have I ruined it?", and the honest answer is usually no: petrol resting inside the tank of a diesel stays harmless until priming, cranking or driving draws it into the system. Leave your engine off and ring Petrol in Diesel — that is how you keep it that way. The rest of this page covers what petrol actually does to a diesel, how to tell how far it has got, and how to make sure it doesn't happen to you again.
Inside the motor: what petrol in a diesel does
Passing through a motor, diesel is doing two things at the same time. It ignites, and before it ignites it protects. Built to extremely fine tolerances, the injectors and the pump depend on your diesel moving through them to stop their surfaces wearing against one another.
Of these two tasks, petrol handles the first poorly and the second never. Being less viscous than diesel, petrol strips out the protection a fuel system needs, leaving a pump running on the blend wearing itself. It's equally made to resist igniting under compression — the opposite of what a diesel needs — which is why you get the rattling.
Put those together and the shape of the problem is plain. Contact doesn't do the harm — movement does. Petrol in the tank is a fuel problem. A pump that has been running on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds moves on with your fuel to your injectors downstream.
Petrol in a diesel around Newbolds: how bad is it? Four cases
Fuelled but never started — as good as it gets. Being at a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With that petrol held inside that tank alone, it's drained and flushed on the spot, and nothing more is needed.
Started for a moment, or just your ignition on. The fuel system has been bled, and so petrol has left your tank and got to the filter and the lines. That is generally still a simple task — a drain, a flush, and the filter seen to.
Your pump now spent a couple of miles on weakened fuel — that is what driving it meant. How hard the vehicle was driven counts as much as how far, and the work covers that tank, the lines, your filter and clean fuel through the entire system. Driving the children to St Mary's Catholic Primary Academy is one kind of trip. Any distance on the M54, under 3 miles from Newbolds, means your engine working hard throughout, and a run to Wolverhampton, under 3 miles away, is a very different task too.
Driven until it complained. Rattling, a ragged idle, smoke, a throttle that has gone soft. That is the motor telling you its fuel no longer is acting like diesel. Stop where you are — on the verge on Cannock Road, at the kerb, down a side road — and don't move it. A car stopped quickly very rarely has long-term damage, as the fuel drain and the flush-through, which still go first, take care of it.
Petrol in a diesel stories Newbolds drivers hear
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. Nothing comes out when you top up — your tank just holds more of the same blend. That advice assumes a diesel fuel system tolerates petrol by percentage. It doesn't.
Myth: "A newer diesel can cope with a bit of petrol." If anything, the opposite. Lubrication counts more on current diesels, not less, since their fuel runs through more precise parts at higher pressure.
This is the one that catches people. Myth: "If it starts and drives, there is no damage done." Diesel in a petrol motor normally means a motor that won't run: the driver stops, and so does the harm. While your pump wears, a diesel fed petrol usually starts, idles and drives away as if nothing has happened. A running engine does not mean fine.
Myth: a two-stroke additive lets you to drive home. It was an old fix, supposed for another problem. That petrol is still inside the tank afterwards, and whatever it has diluted isn't put back.
"Drain it yourself and you are sorted" — a myth, since after it's been running some petrol sits in your filter and lines, waiting to go right back through the pump at the next start. It's also truly hazardous to drain petrol into a can by the kerbside.
How petrol ends up: petrol in a diesel
On purpose? Never. Through carelessness? Rarely, if ever. The forecourt makes it easy: the petrol nozzle is the narrower of the two, and it slips into a diesel filler with almost no resistance, while a diesel nozzle mostly won't go into a petrol vehicle at all. So the error runs one way.
It takes place when routine and the car stop matching. Courtesy car, hire car, or a motor that is new. One petrol and one diesel on the driveway of the same household. A familiar forecourt with the pumps in a different order. A rushed fill en route to Wolverhampton with a train to catch. Precisely the moment it takes place: after years of driving petrol, someone fills a diesel Volkswagen Golf for the first time. Your hand repeats what it has always done once you add rain, a phone call or a back seat full of children.
Next time you fill up in Newbolds: avoiding petrol in a diesel
- Green for unleaded and black for diesel is usual in the UK — yet not on each forecourt. Trust the label on the pump, not the colour.
- The first fill in an unfamiliar vehicle is the time to check your filler flap — on it, or on the cap, many cars state the fuel they take.
- Good intentions count for less than a sticker or a fob in a vivid colour on your diesel's key when a home has one of each. So mark it.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the petrol pump. It sounds silly and it works.
- While you are thinking about something else, this is an easy mistake to make — so put your phone away.
- Add-on devices exist for vehicles without one, and some diesels are built with a filler that will not accept a petrol nozzle. Helpful — but a backstop at best, never a reason to stop checking the label.
- Stop as soon as you notice. Less petrol inside the tank makes a weaker mixture. It doesn't change what to do next, which is still not to start the car.
Put petrol in a diesel around Newbolds already?
Short and simple, then, is the order of things. Do not turn your ignition on, and do not crank it. Ask the attendants to help you push it clear of the petrol pump if you are still at the forecourt, whether that's Texaco or anywhere else. What got in, about how much, and if it's run: tell us those when you phone 0333 366 0103.
Say so if it was AdBlue rather than petrol: it is a different problem, with its own page for Newbolds, since AdBlue brings corrosion and deposits instead of lost protection.
Why one petrol in a diesel job around Newbolds costs more than another
The four situations above are four different jobs, so no single quote for this would be honest. The situation itself does most of the work of moving the cost. The share counts next, meaning how much of the tank is petrol, followed by the position of the car and whether getting to it is safe for a van.
Three questions come first, before any quote, rather than after — what was put in, how much, has it run — and that is the reason. Those answers are what turn a range into one firm number.
About Newbolds and where it is
Newbolds is a suburban area located near Wolverhampton in the West Midlands, sitting at an elevation of around 145 metres. Newbolds is characterized by its predominantly semi-detached housing stock and is situated close to nearby places such as New Cross, Old Fallings, and Fallings Park. Newbolds is home to a population of approximately 8615 residents and is about 1.6 miles from Wolverhampton city centre.
Fuel drain cover across West Midlands, Newbolds included
Newbolds waits in the WV postcode area, and the vans that answer petrol in diesel jobs there work the places near it as well — New Cross, Old Fallings and Fallings Park among them. You need not bring the car to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all locations we drain.
Still at the pump in Newbolds?
Nothing beats it: that is where you now are. Keep it off. Call.