How Worried Should You Be? Petrol in a Diesel Car in Dodd Naze
Less than you probably are, provided it hasn't been started. Petrol sitting in a diesel tank does nothing to the engine until something pulls it through your fuel system — the ignition priming the pump, your starter, or the drive itself. So the truthful answer to the first question everyone in Dodd Naze asks, "have I wrecked it?", is usually no. Leave the motor off then phone Petrol in Diesel — that keeps it like that. The rest 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.
What petrol in a diesel does to the motor
Diesel has two jobs on its way through a motor. Lubricating comes before burning; it does both. Built to extremely fine gaps, the fuel injectors and your pump depend on the 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 clattering comes from petrol being made not to ignite when compressed, which is precisely the opposite of what a diesel needs. On top of that it is thinner than diesel, it strips away the lubrication your system rests on, and any pump running on that mixture is wearing itself.
Combined, those make the shape of the problem plain. Contact doesn't do the harm — circulation does. All a tank with petrol in it amounts to is a fuel fault. A pump that has been running on that petrol is the beginning of a mechanical one, and whatever a worn pump sheds travels on with your fuel to the fuel injectors downstream.
Petrol in a diesel in Dodd Naze: how serious is it? Four situations
The best case there can be: filled up, not once started. Just that tank has petrol in it, so the task is clearing the tank and rinsing your system where your car sits. This situation can only really take place on a forecourt: anywhere else, the vehicle got there by being driven.
Started for a second, or just the ignition on. Petrol has come out of that tank and reached the filter and the lines, because the system has been primed. Drain, flush, see to the fuel filter: still usually straightforward.
The pump has spent a few miles on thinned fuel — that's what driving the vehicle meant. Miles is only half of that; how hard it was driven matters just as much. Either way the work runs to that tank, your lines, the fuel filter and fresh fuel through the entire system. On the school run to Stubbings Infant School, the miles is small. Getting as far as Bradford, under 15 miles away, makes a very different task — as does any distance on the M62, under 10 miles from Dodd Naze, with the motor working hard all the way.
Rattling, a lumpy idle, smoke, a throttle gone soft: driven until it complained. The fuel isn't acting like diesel any more, and your motor is telling you. Pull up on the spot — on the verge on Wadsworth Lane, at the kerb, down a side road — and don't move it again. What comes first is still the drain and flush, and that sorts it out, with permanent damage very uncommon if a vehicle is pulled over early.
What Dodd Naze motorists get told about petrol in a diesel — and the stories in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." Topping up takes out nothing; it gives you a fuller tank of the same mix. Percentage is not how a diesel fuel system copes with petrol, however much that guidance assumes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. Protection counts more on current diesels, not less, because their fuel passes through finer parts at higher pressure.
This is the one that catches motorists. Myth: "If it starts and drives, there is no harm done." Feed diesel to a petrol motor and it usually won't run, so the motorist stops — and the damage stops with them. Feed petrol to a diesel and it generally fires up, ticks over and pulls away like nothing has happened — all the while its pump is wearing. Running is not the same as fine.
An outdated fix for a separate issue lies behind this one. Myth: "Add some two-stroke oil and drive it home." None of what petrol thinned is put back by it — and later, the tank still contains the petrol.
If the engine has run, part of the petrol is 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 your tank yourself and you're sorted" doesn't hold. Besides, petrol emptied into a can by the road is genuinely dangerous.
How does petrol in a diesel take place?
Carelessness is rarely the cause, and nobody means to do it. A diesel nozzle generally won't fit a petrol car, but the narrower petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake simple, and just in that direction.
The moment habit stops matching your car is the moment it occurs. Courtesy car, hire car, or a car that's brand new. One petrol and one diesel on the drive of the same household. A forecourt you know, only with its pumps arranged differently. A rushed fill on the way to Hebden Bridge with a train to catch. A new-to-you diesel Renault Megane, its first fuelling, and a driver used to petrol: precisely when it happens. Add a back seat full of kids, a phone call or rain, and habit takes over.
Dodd Naze drivers: how to avoid petrol in a diesel next time
- A green handle for unleaded and black for diesel is normal in the UK — but not on each forecourt. Go by the label on the pump, not the colour.
- Inspect your filler flap. Many motors state the fuel inside the flap or on the cap. Look at it on your first fill in any motor you don't know.
- Label the key. In a household with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of intending to remember.
- Before the nozzle comes off the petrol pump the first time you fuel a hired or new vehicle, say "diesel" out loud. Silly, yes, yet it does the trick.
- Mistakes like this are straightforward to make whilst your mind is on something else, so your phone goes away.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler built to reject a petrol nozzle, and add-on devices are available for the remainder. Treat it as a safety net, then keep checking the petrol pump.
- Less petrol means a thinner blend, and so stop as soon as you notice — while remembering that your next stage is unchanged. It is still not to start the car.
Already put petrol in a diesel around Dodd Naze?
Then, there is just a short order of things. Starting it is out, and so is switching on the ignition. The attendants at the forecourt — whether at Matthew Sheard & Sons itself or wherever you filled up — will normally help push it away from the pump if you ask. Next, 0333 366 0103. We will ask what went in, about how much, and if it's been run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost protection, make it a separate issue — Dodd Naze has a page just for it.
Why one petrol in a diesel job around Dodd Naze costs more than another
Four different jobs lie behind the four scenarios above — which is why there's no fair single quote. What shifts the cost is mostly which of them you are in. The ratio counts next, meaning how much of that tank is petrol, followed by the position of your car and whether getting to it is safe for a van.
Before any quote, not after, come three queries: the fuel that got in, its volume, and if it's run. That is why. With the replies, you get a straight figure rather than a range.
About Dodd Naze and its setting
Dodd Naze is a suburban area situated on the riverside in West Yorkshire, with a mix of terraced housing and a population of around 2388 residents. Dodd Naze sits at an elevation of 191 metres, overlooking the surrounding landscape and nearby communities such as Wood End and Machpelah. Dodd Naze is located near the city of Bradford, approximately 10.7 miles away, and is part of the larger Yorkshire and the Humber region. Dodd Naze has a distinct character shaped by its riverside setting and proximity to other local areas like Birchcliffe.
Fuel drain cover across West Yorkshire, Dodd Naze included
Petrol in diesel calls around Dodd Naze — part of the HX postcode area — go to vans that likewise cover the spots round it, Wood End, Machpelah and Birchcliffe among them. A forecourt, a supermarket car park, a lay-by or your own drive are all locations our technicians drain, and the vehicle doesn't need to move to us.
Still at the petrol pump around Dodd Naze?
Then you're in the best spot there can be. Keep it turned off, then ring.