How Worried Should You Be? Petrol in a Diesel Car in Broadbridge
Unstarted? Then less anxious than you probably are. Until the ignition primes your pump, your starter turns, or the car is driven, petrol in a diesel tank just rests there and does no harm. Which means the truthful reply to the first Broadbridge query — "have I ruined it?" — normally no. To leave it that way, ring Petrol in Diesel then leave your engine alone. The remainder of this page explains what petrol actually 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.
The motor and petrol in a diesel: what goes on
Passing through a motor, diesel does two things at the same time. Before it combusts, it protects — then it ignites. Designed to very fine tolerances, the injectors and your pump rely on your diesel moving through them to keep their surfaces from wearing against one another.
Petrol handles the first job badly and the second not at all. The knocking comes from petrol being designed not to ignite when compressed, which is precisely the opposite of what a diesel needs. On top of that it is runnier than diesel, it strips out the protection your system hinges on, and any pump running on such a blend is wearing itself.
Seen together, they show what shape the trouble takes. Contact doesn't do the damage — circulation does. A tank with petrol in it is a fuel issue. The beginning of a mechanical problem is a pump that has been working on that petrol — and whatever a worn pump sheds moves on with your fuel to your injectors downstream.
Four scenarios we see in Broadbridge: how serious is petrol in a diesel?
Filled up, and never started: no case is better. Just your tank has petrol in it, and so the job is clearing that tank and flushing your system where your car stands. This scenario can only truly happen at a forecourt: anywhere else, the vehicle got there by being driven.
A brief spell of running, or merely your ignition on. Once primed, the system has drawn petrol from your tank up to your filter and your lines. That is normally still a straightforward task — a drain, a flush, and the fuel filter dealt with.
A few miles driven, and your pump has spent every one of them running on weakened fuel. Mileage is only half of that; how hard it was driven counts just as much. Either way the work runs to that tank, the fuel lines, the fuel filter and clean fuel through the entire system. Short trips, such as the school run to Bosham Primary School, are one matter. Very different again: a trip to Chichester, under 5 miles away, or any distance on the A3(M), under 10 miles from Broadbridge, where your engine kept running hard.
Clattering, a lumpy idle, smoke, a throttle gone soft: driven until it complained. The engine is telling you the fuel is no longer behaving like diesel. Pull up wherever you are — the verge on Station Road, a lay-by, a side street — then leave it where it is. What comes first is still the fuel drain and flush-through, and that sorts it out, with long-term damage very unusual if a vehicle is stopped early.
What Broadbridge people get told about petrol in a diesel — and the myths in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." A fuller tank of the same mixture is all you get, since topping up takes out nothing. Percentage is not how a diesel fuel system copes with petrol, however much that advice supposes.
"Modern diesels can handle a little petrol" — a myth, and closer to the reverse. A current diesel sends its fuel through finer components at higher pressure, which makes the lubrication matter more, not less.
Myth: "If it starts and drives, there is no damage done." This is the one that catches drivers. Diesel in a petrol motor normally leaves a motor that will not run: the motorist stops, and so does the harm. Feed petrol to a diesel and it usually starts, idles and pulls away like nothing has happened — all while its pump wears. Running isn't the same as fine.
Myth: a two-stroke additive makes it safe to drive home. It is an old fix, supposed for another fault. None of what petrol diluted gets put back by it — and afterwards, your tank still contains that petrol.
"Drain it yourself and you're sorted" — a myth, because after it has been running some petrol sits in your filter and lines, waiting to go right back through the pump on your next start. And, a can of petrol drained at the kerbside is genuinely dangerous.
Why petrol in a diesel occurs so easily
It's rarely carelessness, and nobody does it on purpose. One way only, since of the nozzles: the smaller petrol one slides inside a diesel filler with almost no resistance, while the diesel one generally won't fit a petrol motor. That's how the forecourt makes it straightforward.
When habit and your car stop matching, it takes place. Any vehicle that is new to you — a hire car, on loan as a courtesy car, or brand new. A household with one petrol and one diesel on the driveway. A forecourt you know, but with its pumps laid out differently. A hurried fill on the way to Bosham with a train to catch. Exactly the moment it occurs: after years of driving petrol, someone fills a diesel Renault Clio for the first time. The hand does what it has always done when you add rain, a phone call or a back seat full of children.
How to prevent petrol in a diesel on your next fill-up in Broadbridge
- Not every forecourt in the UK keeps to green for unleaded and black for diesel, though most generally do. Check the petrol pump's label; the colour is only a clue.
- In a motor you don't know, look inside the flap over your filler or at the cap before your first fill: many vehicles print the fuel there.
- Label your key. In a household with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of intending to remember.
- Before the nozzle leaves the pump the first time you fill a hired or new vehicle, say "diesel" aloud. Silly, yes, yet it does the trick.
- Mistakes like this are easy to make while your mind is on something else, and so the phone goes away.
- Add-on devices exist for vehicles without one, and some diesels come with a filler that won't accept a petrol nozzle. Helpful — but a backstop only, never a reason to stop checking the label.
- The moment you notice, stop: less petrol inside your tank means a weaker mix. What to do next doesn't change, though — still don't fire it up.
Put petrol in a diesel in Broadbridge already?
Then, there is just a short order of things. Do not fire it up, and don't switch the ignition on. If you're still on the forecourt — Esso or anywhere else — ask the staff to help you push it away from the petrol pump. Next, 0333 366 0103. We will ask what was put in, about how much, and if it's been run.
Corrosion and deposits are the trouble with AdBlue, where petrol brings lost protection. So if it was AdBlue, say so — and see its own Broadbridge page.
Why one petrol in a diesel task in Broadbridge costs more than another
Four separate tasks lie behind the four scenarios above — which is why there is no fair single quote. Mostly, your cost shifts with which situation you are in. Two things follow that: the petrol that was put in as a share of what the tank holds, then the place the car is in and whether a van can reach it safely.
Before any quote, not after, come three queries: your fuel that got in, its volume, and whether it has run. That is why. A range becomes a straight figure once those answers are in.
About Broadbridge itself
Broadbridge is a small village in West Sussex, situated near the coast and close to the city of Chichester. Broadbridge has a low elevation of around 8 metres above sea level and is surrounded by nearby places such as Bosham, Chidham, and West Ashling. Broadbridge is characterized by its terraced housing and is home to a population of approximately 1167 residents. Broadbridge is located about 55.6 miles from London, making it a relatively rural community in the South East region.
Across West Sussex and around Broadbridge: fuel drain cover
Petrol in diesel call-outs in Broadbridge — part of the PO postcode area — go to vans that also cover the locations round it, Bosham, Chidham and West Ashling among them. The car does not need to come to us: we drain at a forecourt, in a supermarket car park, in a lay-by or on your own drive.
In Broadbridge and still at the petrol pump?
Then you're in the best place there can be. Keep it off. Ring.