How Worried Should You Be? Petrol in a Diesel Car in Honley Moor
Unstarted? Then less anxious than you probably feel. "Have I wrecked it?" is the first question anyone around Honley Moor asks, and the honest answer is usually no, since petrol left in a diesel tank hurts nothing until it is dragged through the fuel system — by ignition priming, by your starter, or by driving. Petrol in Diesel is who to ring, with the motor left off, so it remains that way. Below, you will find what petrol really does inside a diesel, how far it might have gone, and how to stop it happening to you a second time.
The motor and petrol in a diesel: what goes on
On its way through an engine, diesel does two jobs. Before it combusts, it protects — and then it ignites. The high-pressure pump and your injectors are made to extremely fine gaps, and your diesel passing through them is what stops those surfaces from grinding against each other.
Poorly at the first, not at all at the second: that is petrol. The clattering comes from petrol being made not to ignite when compressed, which is exactly the opposite of what a diesel needs. On top of that it is thinner than diesel, it strips away the lubrication the system hinges on, and any pump running on that mix is wearing itself.
Taken together, they show what shape the problem has. It is circulation that does the harm, not contact. All a tank with petrol in it amounts to is a fuel fault. After the pump has been running on that petrol, a mechanical issue has begun: whatever is shed by a pump that is grinding is carried downstream to the injectors with your fuel.
Four scenarios our engineers see in Honley Moor: how serious is petrol in a diesel?
Filled but not once started — the best it gets. The petrol is in the tank and just the tank, and the job is a drain and a flush where your car stands. This is the one situation that can only truly take place on a forecourt, because anywhere else your car has been driven to get there.
A moment's running, or just your ignition on. Once primed, your system has pulled petrol out of the tank up to your filter and your lines. Drain, flush, deal with the filter: still usually simple.
Those few miles on the road were the pump working on fuel diluted by petrol the whole way. Tank, lines, filter, then clean fuel run through the whole circuit: that's the work, and the way the car was driven counts as much as the miles. Short trips, like the school run to Honley CofE (VC) Junior, Infant and Nursery School, are one matter. A run as far as Bradford, under 15 miles away, is a very different job. So is any mileage on the Outlane Interchange, under 5 miles from Honley Moor, where the engine has been working hard the whole time.
Driven on till it protested — clattering, smoke, a lumpy idle, a soft throttle. That's your motor telling you its fuel no longer is acting like diesel. Stop where you are — on the verge on Fisher Green, at the kerb, down a side road — and don't move it again. What goes first is still the drain and flush-through, and that takes care of it, with permanent damage very unusual if a car is pulled over soon.
Myths Honley Moor motorists hear about petrol in a diesel
False: topping up to full with diesel makes it fine. It doesn't. Nothing is removed when you top up — the tank just carries more of the same blend. That advice assumes a diesel fuel system handles petrol by percentage. It doesn't.
Myth: "A newer diesel can cope with a bit of petrol." If anything, the opposite. At higher pressure, through more precise parts: that's how a current diesel moves its fuel, and so the protection counts for more, not less.
Myth: "If it starts and drives, there is no damage done." This is the one that fools motorists. Diesel in a petrol motor usually leaves a motor that will not run: the driver stops, and so does the damage. A diesel fed petrol usually starts, ticks over and drives away as though nothing has happened, whilst your pump grinds. Fine and running are not the same at all.
Not so: a two-stroke additive lets you to drive home. It is an old workaround, meant for another issue. None of what petrol thinned gets put back by it — and afterwards, that tank still holds that petrol.
The next start sends petrol back round the pump out of the lines and the fuel filter, where some of it ends up once the motor has run. That is why a DIY tank drain doesn't sort it — a myth. Draining petrol into a can at the kerbside is also genuinely hazardous.
How petrol ends up: petrol in a diesel
Nobody does it on purpose, and it is rarely carelessness. The forecourt makes it easy: the petrol nozzle is the slimmer of the two, and it slides into a diesel filler with almost no resistance, whilst a diesel nozzle mostly won't go into a petrol car at all. So the error runs one way.
When routine and your car stop matching, it happens. A new vehicle, a hire car or a courtesy car. A household with one petrol and one diesel on the driveway. A familiar forecourt with the pumps in a different order. Fuelling up in a hurry en route to Honley, with a train to catch. Years of petrol motors behind you, a diesel Volkswagen Tiguan in front of you at the forecourt for its first tank — that's when. Throw in a back seat full of children, a phone call or rain, and habit wins.
Preventing petrol in a diesel next time you fill up in Honley Moor
- The label is what counts, and so check the petrol pump rather than the colour: in the UK unleaded handles are usually green and diesel black, but not on every forecourt.
- In a car you do not know, look inside the flap over the filler or at the cap before your first fill: many motors print the fuel type there.
- A coloured fob or a sticker on the diesel's key achieves more than any amount of meaning to remember, for a house with one of each.
- "Diesel", aloud, before you pick up the nozzle — each time a new or hired car gets its first tank. It seems daft. It does the trick.
- Thinking about something else is when this becomes an easy mistake to make, and so put the phone away and keep your mind on the pump.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler designed to reject a petrol nozzle, and aftermarket devices are available for the remainder. Count it as a safety net, and keep checking the petrol pump.
- Spotting it halfway? Stop there and then. A weaker blend results from less petrol inside the tank, but the next step stays the same: don't start the vehicle.
Honley Moor: already put petrol in a diesel?
Then, there is only a short order of things. Do not crank it, and do not switch your ignition on. If you are still on the forecourt — Fitzpatrick Fuels or anywhere else — ask the attendants to help you push it clear of the pump. Next, 0333 366 0103. We'll ask what got 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 different fault — Honley Moor has a page all for it.
One petrol in a diesel task in Honley Moor costs more than another. Why?
There's no honest single price for this, because the four scenarios above are four separate jobs. Which of them you're in is mostly what shifts your cost. Beyond that it is the ratio — how much petrol got in against how much the tank holds — and then where your car is and whether a van can get to it safely.
Ahead of any quote, not after, come three questions: the fuel that went in, its quantity, and if it has run. That's why. With the replies, you get a straight figure instead of a range.
About Honley Moor, briefly
Honley Moor is a locality situated near the River Holme in West Yorkshire, with a mix of semi-detached housing and scenic views. Honley Moor sits at an elevation of 139 metres, close to the nearby villages of Honley, Newtown, and Scotgate. Honley Moor is located approximately 13 miles from Bradford and 161 miles from London, making it a relatively rural area within commuting distance of larger cities.
Fuel drain cover across West Yorkshire, Honley Moor included
Honley Moor sits in the HD postcode area, and the vans that answer petrol in diesel call-outs there work the places near it as well — Honley, Newtown and Scotgate among them. A forecourt, a supermarket car park, a lay-by or your own driveway are all spots our technicians drain, and your vehicle does not need to come to us.
Honley Moor: still at the petrol pump?
Then, you could not be in a better spot. Keep it off. Call.