How Worried Should You Be? Petrol in a Diesel Car in Agbrigg
Provided it hasn't been started, you can worry far less than you probably are. Petrol resting in a diesel tank does nothing to the motor till something pulls it through the system — your ignition priming the pump, your starter, or driving on its own. So the honest answer to the first question everyone around Agbrigg asks, "have I wrecked it?", is generally no. Leave your motor off and call Petrol in Diesel — that is how you keep it that way. The remainder of this page explains what petrol really does to a diesel, how to judge how far it has got, and how to make sure it doesn't happen to you a second time.
Inside the engine: what petrol in a diesel really does
On its way through a motor, diesel does two tasks. It protects to begin with, and after that does it burn. Extremely fine clearances go into the fuel injectors and the high-pressure fuel pump, and just the diesel flowing through keeps those surfaces from grinding together.
Badly at the first, not at all at the second: that's petrol. The clattering comes from petrol being designed not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips out the protection the system rests on, and any pump working on that mix is wearing itself.
Put those together and the shape of the issue is plain. The harm is done by circulation, not by contact. Petrol in the tank is a fuel fault. Whatever a worn pump sheds travels on, carried by the fuel, into the fuel injectors downstream, which is why a pump that has been working on that petrol is where a mechanical issue starts.
Petrol in a diesel in Agbrigg: how bad is it? Four situations
Fuelled, and not started: no case is better. Just your tank has petrol in it, so the task is clearing that tank and purging the fuel system where the car sits. This situation can only truly occur on a forecourt: anywhere else, the vehicle got there by being driven.
Ignition on, or started for a second. With the fuel system primed, the fuel lines and filter already contain petrol that came from your tank. Drain, flush, see to your filter: still usually easy.
Those few miles on the road meant the pump labouring on fuel thinned by petrol throughout. Tank, lines, filter, then fresh fuel put through the entire circuit: that is the work, and the way the vehicle was driven matters as much as the distance. Driving the kids to Sandal Magna Community Academy is one sort of trip. Getting as far as Wakefield, under 3 miles away, makes a very different task — as does any distance on the M1, under 3 miles from Agbrigg, with the motor labouring hard the whole time.
It protested, and only then stopped: smoke, rattling, a throttle gone soft, an idle gone uneven. That's the motor telling you its fuel has stopped behaving like diesel. Pull up wherever you are — the verge on Back Bowman Street, a lay-by, a side street — then leave the car where it is. A car pulled over early very seldom has permanent damage, as the drain and the flush, which still come first, deal with it.
What Agbrigg drivers get told about petrol in a diesel — and the stories in it
"Top it up the rest of the way with diesel and it'll be fine" — a myth. It will not. Topping up removes nothing; it gives you a bigger tank of the same mix. The assumption behind the guidance — that diesel fuel systems accept petrol by percentage — is wrong.
If anything, the reverse is true. Myth: "A modern diesel can cope with a bit of petrol." A newer diesel sends its fuel through more precise components at higher pressure, which makes the lubrication count more, not less.
"It starts, it drives, and so no harm done" — the myth that trips up more people than any other. Feed diesel to a petrol motor and it normally won't run, and so the driver stops — and the harm stops with them. Feed petrol to a diesel and it usually fires up, ticks over and pulls away like nothing has happened — all while its pump is wearing. Running is not the same as fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a distinct fault. What petrol has thinned remains diluted, and the petrol stays in your tank anyway.
Myth: "Drain that tank yourself and you are sorted." After the engine has been run, some of the petrol is no longer inside that tank: it is in the filter and the lines, and it goes right back through your pump on the next start. Emptying petrol into a can by the kerbside is also truly hazardous.
Why petrol in a diesel takes place so easily
Carelessness is seldom the cause, and no one means to do it. A diesel nozzle mostly won't go into a petrol vehicle, yet the smaller petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake straightforward, and only in that direction.
It takes place when routine and the vehicle stop matching. Courtesy car, hire car, or a vehicle that's new. Two vehicles on one driveway, one petrol, one diesel. A forecourt you know, but with its pumps arranged differently. A hurried fill on the way to Sandal & Agbrigg with a train to catch. Years of petrol motors behind you, a diesel Renault Megane in front of you on the forecourt for its first tank — that's when. With rain, a call coming in, or a car full of children to deal with, the hand just does what it has always done.
Agbrigg motorists: how to prevent petrol in a diesel next time
- A green handle for unleaded and black for diesel is normal in the UK — yet not on each forecourt. Trust the label on the petrol pump, not the colour.
- Check your filler flap. Many cars state the fuel type inside the flap or on the cap. Look at it on your first fill in any car you do not know.
- One of each in the household? Mark the key to the diesel — a coloured fob, a sticker — because meaning to remember isn't enough.
- "Diesel", out loud, before you pick up the nozzle — every time a new or hired car gets its first tank. It seems silly. It does the trick.
- While you're thinking about something else, this is an easy mistake to make — so tuck the phone away.
- Up to a point, a misfuel inhibitor helps: some diesels come with a filler built to refuse a petrol nozzle, and add-on devices exist for the rest. Count it as a backstop, and keep checking the petrol pump.
- Stop the moment you notice. Less petrol inside that tank makes a weaker mixture. It does not change what to do next, which is still not to start the vehicle.
Already put petrol in a diesel in Agbrigg?
The order of things is short, then. Do not turn your ignition on, and don't start it. Ask the attendants to help you roll it away from the pump if you are still at the forecourt, whether that is BP or anywhere else. Call 0333 366 0103 next, with three answers — your fuel, the approximate volume, and if it has run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost protection, make it a separate fault — Agbrigg has a page all for it.
One petrol in a diesel job around Agbrigg costs more than another. Why?
The four situations above are four separate jobs, so no single price for this would be honest. The situation itself does most of the work of moving the cost. The proportion counts next, meaning how much of that tank is petrol, and then the position of the vehicle and whether getting to it is safe for our van.
That is why we ask three questions before quoting rather than after: what got in, how much, and if it has run. Given those replies, there is a straight figure rather than a range.
About Agbrigg
Agbrigg is a suburban area located on the riverside in West Yorkshire, with a mix of terraced housing and local amenities. Agbrigg sits near the city of Wakefield, at an elevation of 28 metres, and is close to nearby places such as Belle Vue and Portobello. Agbrigg is home to a population of approximately 4952 residents, who enjoy easy access to the surrounding area. Agbrigg's proximity to Wakefield and other local towns makes it a convenient place to live.
Agbrigg and West Yorkshire: where our fuel drain cover runs
Petrol in diesel call-outs in Agbrigg — part of the WF postcode area — go to vans that likewise cover the places round it, Belle Vue, Portobello and Belle Isle included. We drain wherever your vehicle is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
At the petrol pump in Agbrigg, still?
The best position there is, then — that's where you are. Switched off it remains; then ring.