Should You Worry? Petrol in a Diesel Car in Lower Fagley
Probably less than you already are — as long as nobody has started the car. Till the ignition primes the pump, your starter cranks, or the car is driven, petrol in a diesel tank just rests there and does no harm. Which makes the honest reply to that first Lower Fagley question — "have I wrecked it?" — usually no. Keep it like that: leave the engine off and ring Petrol in Diesel. The rest of this page sets out what petrol actually does to a diesel, how to tell how far it has got, and how to make sure it does not happen to you again.
What petrol in a diesel does to the engine
Two jobs fall to diesel on its route round a motor. It lubricates to begin with, and only then does it burn. Designed to very fine gaps, the injectors and your pump rely on your diesel flowing through them to keep their surfaces from wearing against one another.
Poorly at the first, not at all at the second: that's petrol. The rattling comes from petrol being made not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is runnier than diesel, it strips away the protection your system depends on, and any pump working on that mix is wearing itself.
Combined, those make the shape of the issue plain. The harm is done by circulation, not by contact. Where that petrol is only in your tank, it is a fault of fuel, nothing more. A pump that has been working on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds travels on with the fuel to the injectors downstream.
Four scenarios our engineers see in Lower Fagley: how serious is petrol in a diesel?
The best case there can be: filled up, never started. Just that tank has petrol in it, and so the task is draining that tank and flushing the fuel system where the vehicle sits. This scenario can only truly happen on a forecourt: anywhere else, the car got there by being driven.
The ignition switched on, or a short start. Your system has been primed, so petrol has left your tank and got to the filter and the lines. Drain, flush, deal with the filter: still usually easy.
Some miles driven, and the pump has spent each of them working on weakened fuel. Miles is only half of it; how hard it was driven matters just as much. Either way the work includes your tank, the lines, the fuel filter and fresh fuel through the entire system. On the school run to Fagley Primary School, the mileage is short. Very different again: a trip to Bradford, under 3 miles away, or some distance on the M606, under 5 miles from Lower Fagley, where the engine kept running hard.
Driven till it protested. Knocking, an uneven idle, smoke, a throttle that has gone soft. The fuel isn't behaving like diesel any more, and your motor is saying so. Leave it where it has stopped: a lay-by, a quiet street, the verge on Cherry Tree Place. A car pulled over early very seldom has long-term damage, as the drain and the flush, which still come first, sort it out.
Lower Fagley motorists and the petrol in a diesel stories they hear
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Topping up takes out nothing; it gives you a bigger tank of the same mix. That guidance presumes a diesel fuel system tolerates petrol by percentage. It does not.
Myth: "A modern diesel can cope with a bit of petrol." If anything, the reverse. At higher pressure, through more precise parts: that is how a modern diesel moves its fuel, and so the protection counts more, not less.
This is the one that fools people. Myth: "If it starts and drives, there's no harm done." A petrol engine fed diesel usually will not run, and so the driver stops and the harm stops with them. A diesel fed petrol usually starts, ticks over and drives away as though nothing has happened, while the pump grinds. Fine and running aren't the same thing.
Myth: a two-stroke additive makes it safe to drive home. It is an old fix, supposed for another problem. The petrol is still inside the tank afterwards, and whatever it has diluted isn't put back.
If the motor has been run, part of the petrol sits in your filter and the fuel lines, not your tank — and the next start pulls it right back through your pump. So the myth "drain the tank yourself and you are sorted" does not hold. Besides, petrol cleared into a can by the road is genuinely hazardous.
Petrol in a diesel: how does it take place?
Nobody does it on purpose, and it's rarely carelessness. One way only, because of the nozzles: the narrower petrol one slips inside a diesel filler with almost no resistance, while the diesel one mostly won't fit a petrol vehicle. That is how the forecourt makes it straightforward.
It happens when routine and the car stop matching. A vehicle that is new to you — hired, on loan as a courtesy car, or just bought. A household with one petrol and one diesel on the driveway. Your ordinary forecourt, its pumps suddenly in a different order. A train to catch, and a rushed fill en route to New Pudsey. A new-to-you diesel Skoda Octavia, its first fuelling, and a motorist used to petrol: precisely when it takes place. Your hand does what it has always done once you add rain, a phone call or a back seat full of kids.
Lower Fagley motorists: how to prevent petrol in a diesel next time
- Not every forecourt in the UK follows green for unleaded and black for diesel, though most generally do. Read the petrol pump's label; the colour is only a clue.
- Check the filler flap. Plenty of cars state the fuel type inside the flap or on the cap. Look at it on the first fill in a vehicle you don't know.
- Label your key. In a house 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", aloud, before you lift the nozzle — every time a new or hired car gets its first tank. It sounds daft. It does the trick.
- Tuck the 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 built to refuse a petrol nozzle, and add-on devices exist for the rest. Treat it as a safety net, then keep checking the pump.
- Less petrol means a thinner mix, so stop as soon as you notice — though remembering that your next stage is unchanged. It is still not to crank it.
Already put petrol in a diesel around Lower Fagley?
Short and simple, then, is the order of things. Leave it unstarted, with your ignition switched off as well. Ask the staff to help you roll it away from the petrol pump if you are still on the forecourt, whether that's Morrisons or somewhere else. Next, 0333 366 0103. We'll ask what got in, roughly how much, and if it's been run.
If it was AdBlue rather than petrol, say so. That's a separate issue — corrosion and deposits instead of lost protection — and it has its own page for Lower Fagley.
What makes one Lower Fagley petrol in a diesel job cost more than the next
A fair single price does not exist here: four situations, four separate tasks. What moves the cost is chiefly which of them you're in. The proportion matters next, meaning how much of the tank is petrol, followed by the location of the vehicle and whether getting to it is safe for a van.
Three queries come first, before quoting, rather than after — what was put in, how much, has it run — and that is the reason. Their answers are what turn a range into one firm number.
About Lower Fagley
Lower Fagley is a suburban area situated on the outskirts of Bradford, near the River Aire in West Yorkshire. Lower Fagley sits at an elevation of 156 metres, with semi-detached housing being the predominant type of accommodation. Lower Fagley is close to nearby places such as Upper Fagley, Woodhall, and Ravenscliffe, and is approximately 2.4 miles from Bradford city centre. Lower Fagley has a population of around 2309 residents.
Fuel drain cover across West Yorkshire, Lower Fagley included
The teams answering petrol in diesel calls around Lower Fagley, in the BD postcode area, equally work the locations near it, Upper Fagley, Woodhall and Ravenscliffe among them. A forecourt, a supermarket car park, a lay-by or your own drive are all spots our technicians drain, and the vehicle doesn't need to move to us.
At the pump around Lower Fagley, right now?
Then you're in the best place there is. Keep it off. Call.