Haybridge: Petrol in a Diesel Car? How Worried to Be
Unstarted? Then less anxious than you likely feel. Until your ignition primes your pump, the starter turns, or the car is driven, petrol in a diesel tank just rests there and does nothing. Which means the honest reply to the first Haybridge query — "have I wrecked it?" — usually no. Petrol in Diesel is who to call, with your motor kept off, so it remains that way. Keep reading for three things: the effect petrol has inside a diesel motor, the signs of how far it has spread, and the way to make sure you never repeat it.
What petrol in a diesel does to your engine
Two tasks fall to diesel on its journey round a motor. Oiling comes before burning; it does both. Made to extremely fine tolerances, your injectors and your pump depend on the diesel flowing through them to keep their surfaces from wearing against one another.
Petrol handles the first job badly and the second not at all. Being less viscous than diesel, petrol strips away the lubrication a fuel system needs, leaving a pump running on the blend to wear itself. It is also made to resist igniting under compression — the reverse of what a diesel needs — which is why you hear the knocking.
Together, those leave the shape of the issue plain. The damage is done by circulation, not by contact. Where that petrol is only inside the tank, it is a fault of fuel, nothing more. 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 beyond it.
Haybridge, petrol in a diesel: four situations, from mild to significant
Filled up, and not started: no case is better. The petrol is inside your tank and only your tank, and the job is a drain and a flush where your car stands. This is the one situation that can only really happen on a forecourt, because anywhere else your car has been driven to get there.
Started for a second, or just your ignition on. Once primed, your system has drawn petrol out of the tank up to your filter and the lines. Drain, flush, see to the filter: still usually straightforward.
The pump has spent a few miles on diluted fuel — that is what driving the car does. How hard the car was driven matters as much as how far, and this work covers your tank, your lines, the fuel filter and fresh fuel through the entire system. Driving the kids to St Cuthbert's Church of England Academy Infants and Pre-School is one sort of trip. Any distance on the M5, under 15 miles from Haybridge, means the motor has worked hard throughout, and a run to Wells, under a mile away, is a very different job as well.
Driven until it complained. Clattering, a lumpy idle, smoke, a throttle that has gone soft. The fuel isn't acting like diesel any more, and the engine is saying so. Whether it is the verge on Elm Close, a lay-by or a side street, stop where you are then leave it. A car stopped early very rarely has permanent damage, because the fuel drain and the flush-through, which still go first, take care of it.
Petrol in a diesel myths Haybridge drivers hear
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. A bigger tank of the same mix is all you get, since topping up removes nothing. Percentage isn't how a diesel fuel system tolerates petrol, however much that advice presumes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. A modern diesel runs its fuel through more precise parts at higher pressure, which makes the lubrication count more, not less.
"It starts, it drives, and so no harm done" — the myth that catches more motorists than any other. Feed diesel to a petrol motor and it normally will not run, so the driver stops — and the harm stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump wears. Fine and running aren't the same at all.
Myth: "Add some two-stroke oil and drive it home." It is an outdated workaround for a different issue. That petrol is still in your tank after that, and what it has thinned is not put back.
Once the motor has run, part of that petrol is in the fuel filter and the lines, not your tank — and the next start pulls it straight back through the pump. So the myth "drain your tank yourself and you are sorted" doesn't stand up. Draining petrol into a can at the kerbside is also truly hazardous.
How it happens: petrol in a diesel
No one does it on purpose, and it's seldom carelessness. The petrol nozzle is the slimmer of the two and slides into a diesel filler with almost no resistance; a diesel nozzle generally will not go into a petrol car at all. The forecourt makes it simple, and the slip runs one way.
The moment habit stops matching your car is the moment it occurs. A new motor, a hire car or a courtesy car. One petrol and one diesel on the driveway of the same household. A forecourt you know, but with its pumps laid out differently. Rushing for a train outside Castle Cary and filling up en route. Years of petrol motors behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that is when. The hand repeats what it has always done when you add rain, a phone call or a back seat full of children.
Haybridge drivers: how to prevent petrol in a diesel next time
- The label is what counts, so read the petrol pump instead of the colour: in the UK unleaded handles are normally green and diesel black, but not on every forecourt.
- Inspect the filler flap. Plenty of vehicles state the fuel type inside the flap or on the cap. Look at it on the first fill in any car you do not know.
- Good intentions do less than a sticker or a fob in a bright colour on the diesel's key when a home has one of each. So label it.
- "Diesel", aloud, before you pick up the nozzle — each time a new or hired car gets its first tank. It sounds daft. It works.
- Tuck the phone away. This is an easy mistake to make whilst you're thinking about something else.
- Add-on devices exist for cars without one, and some diesels are built with a filler that will not take a petrol nozzle. Useful — but a safety net only, never a reason to stop checking the label.
- Stop the moment you notice. Less petrol inside the tank makes a thinner mix. It does not change what to do next, which is still not to crank it.
Put petrol in a diesel around Haybridge already?
The order of things is short, then. Starting it is out, and so is turning on the ignition. Ask the staff to help you push it away from the pump if you are still on the forecourt, whether that's Esso or somewhere else. Then phone 0333 366 0103 and tell us what was put in, about how much, and whether it's run.
If it was AdBlue and not petrol, say so. That is a different problem — corrosion and deposits instead of lost protection — and it has its own page for Haybridge.
What makes one Haybridge petrol in a diesel task cost more than the next
A fair single quote doesn't exist here: four situations, four separate jobs. What moves your cost is chiefly which of them you're in. Next it is the ratio — how much petrol got in against how much your tank holds — and after that where your car is and whether our van can get to it safely.
That is why our engineers ask three queries before quoting rather than after: what got in, how much, and whether it's run. The replies turn a range into a straight figure.
About Haybridge and its setting
Haybridge is a village situated on the riverside in Somerset, with an elevation of 52 metres, and is located near the city of Wells. Haybridge has a population of approximately 1265 residents and predominantly features semi-detached housing. Haybridge is close to nearby places such as Henley and Burcott, and is within walking distance of Wells. Haybridge is also relatively distant from London, at around 111.5 miles away.
Haybridge and Somerset: where our fuel drain cover runs
Haybridge rests in the BA postcode area, and our vans that answer petrol in diesel calls there work the places around it as well — Henley, Burcott and Wells among them. The car doesn't need to move to us: we drain on a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
At the pump in Haybridge, right now?
Then you are in the best place there is. Turned off it remains; then phone.