How Worried Should You Be? Petrol in a Diesel Car in Dixons Green
Likely less than you already are — provided nobody has started it. Until your ignition primes the pump, the starter cranks, or your car is driven, petrol in a diesel tank just waits there and does no harm. Which means the truthful reply to the first Dixons Green query — "have I wrecked it?" — normally no. To leave the vehicle like that, phone Petrol in Diesel and leave the engine switched off. What petrol actually does to a diesel, how to gauge how far it's gone, and how to stop it from happening a second time: that's the remainder of this page.
What petrol in a diesel does to your engine
On its way through a motor, diesel has two tasks. It protects first, and after that does it burn. Extremely fine tolerances are built into the injectors and the high-pressure pump, and just the diesel running through keeps those surfaces from grinding together.
Of those two tasks, petrol handles the first poorly and the second not at all. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, so a pump running on that mixture wearing itself. It's also made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the rattling.
Together, those make the shape of the trouble clear. It's circulation that causes the harm, not contact. Any tank with petrol in it is a fuel problem. 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 that petrol is where a mechanical problem begins.
How bad is petrol in a diesel? Four situations our engineers see around Dixons Green
Filled up, never started. The best case there can be. Being on a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With the petrol held in that tank alone, it is emptied and flushed right where it stands, and nothing more is needed.
Started for a second, or just the ignition on. The fuel system has been bled, and so petrol has left the tank and got to the fuel filter and the fuel lines. That is generally still a simple job — a drain, a flush, and your filter dealt with.
Driven a couple of miles. Now the pump has spent these miles working on thinned fuel. How hard your car was driven counts as much as how far, and the work covers your tank, the fuel lines, your filter and fresh fuel through the whole system. On the school run to Kates Hill Primary School, the miles is short. Getting as far as Wolverhampton, under 10 miles away, makes a very different job — as does any miles on the M5, under 3 miles from Dixons Green, with the engine working hard all the way.
Clattering, a ragged idle, smoke, a throttle gone soft: driven until it complained. The fuel is not behaving like diesel any more, and the engine is telling you. Leave it where it stops: a lay-by, a quiet street, the verge on Hillman Drive. The fuel drain and flush-through still come first, and they sort it out: if a car is pulled over early, permanent damage is very rare.
Petrol in a diesel stories Dixons Green motorists hear
False: topping up to full with diesel makes it fine. It does not. Nothing comes out when you top up — that tank just holds more of the same blend. The assumption behind that advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
If anything, the reverse is true. Myth: "A current diesel can cope with a bit of petrol." Lubrication matters more on newer diesels, not less, since their fuel passes through finer components at higher pressure.
Myth: "If it starts and drives, there's no damage done." This is the one that fools people. Feed diesel to a petrol engine and it usually won't run, and so the driver stops — and the harm stops with them. While the pump wears, a diesel fed petrol normally starts, idles and drives away as though nothing has happened. A running engine does not mean fine.
Not so: a two-stroke additive makes it safe to drive home. It is an old fix, supposed for another fault. What petrol has diluted remains thinned, and that petrol stays in the tank regardless.
The next start draws petrol back round your pump out of your lines and the filter, where some of it ends up once the motor has run. That is why a DIY tank drain doesn't leave you sorted — a myth. Clearing petrol into a can at the kerbside is also really hazardous.
How does petrol in a diesel happen?
A careless moment is seldom the cause, and nobody means to do it. A diesel nozzle generally won't fit a petrol vehicle, but the narrower petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error simple, and only in one direction.
Routine and the car falling out of step is when it takes place. Courtesy car, hire car, or a motor that's new. Households running one of each, petrol and diesel. A forecourt you know, but with its pumps arranged differently. A train to catch, and a hurried fill en route to Dudley Port. Years of petrol motors behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that is when. Your hand does what it has always done when you add rain, a phone call or a back seat full of children.
Dixons Green motorists: how to prevent petrol in a diesel next time
- Read the petrol pump, not the colour. In the UK unleaded handles are usually green and diesel black, yet not on each forecourt. The label is what matters.
- In a car you don't know, look inside the flap over your filler or at the cap before the first fill: many cars state the fuel type there.
- Mark your 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 meaning to remember.
- "Diesel", out loud, before you lift the nozzle — each time a new or hired car gets its first tank. It sounds silly. It does the trick.
- Tuck your phone away. This is an easy mistake to make whilst you are thinking about something else.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler designed to refuse a petrol nozzle, and add-on devices are available for the rest. Treat it as a backstop, then keep reading the pump.
- Less petrol makes a thinner blend, and so stop as soon as you notice — while remembering that your next stage is unchanged. It is still not to fire it up.
Put petrol in a diesel in Dixons Green already?
The order of things is brief, then. Don't switch the ignition on, and do not crank it. The staff on the forecourt — whether at the nearest petrol station itself or wherever you filled up — will usually help push it away from the pump if you ask. What was put in, roughly how much, and if it has run: tell us those when you call 0333 366 0103.
If it was AdBlue instead of petrol, say so. That's a separate problem — corrosion and deposits and not lost lubrication — and it has its own page for Dixons Green.
One petrol in a diesel job in Dixons Green costs more than another. Why?
The four situations above are four separate jobs, so no single price for this would be honest. Which of them you're in is mostly what shifts your cost. The share counts next, meaning how much of the tank is petrol, and then the position of the car and whether reaching it is safe for our van.
Three questions come first, before quoting, instead of after — what was put in, how much, has it run — and that is the reason. Their replies are what turn a range into one firm number.
About Dixons Green
Dixons Green is a suburban area in the West Midlands, situated near the River Tame and close to several hills including Tansley Hill, Kates Hill, and Cawney Hill. Dixons Green has a population of around 8453 people and is characterised by semi-detached housing. Dixons Green is located approximately 6.2 miles from Wolverhampton and 107.6 miles from London, at an elevation of 215 metres. Dixons Green forms part of the wider Wolverhampton urban area, with the city's amenities and services within easy reach.
Fuel drain cover in Dixons Green and across West Midlands
The teams answering petrol in diesel jobs in Dixons Green, in the DY postcode area, also work the spots near it, Tansley Hill, Kates Hill and Cawney Hill included. You need not move the car to us. Forecourts, supermarket car parks, lay-bys and your own drive are all spots where we work.
Dixons Green: still at the pump?
Then, you could not be in a better position. Switched off it remains; then ring.