How Worried Should You Be? Petrol in a Diesel Car in Houghton Park
Less than you likely are, provided it hasn't been started. Till your ignition primes the pump, the starter turns, or the car is driven, petrol in a diesel tank just waits there and does no harm. Which means the honest reply to the first Houghton Park query — "have I ruined it?" — usually no. Keep it that way: leave your engine off then phone Petrol in Diesel. Keep reading for three things: the effect petrol has inside a diesel engine, the signs of how far it has got, and the way to make sure you never repeat it.
Petrol in a diesel: what does it do to the engine?
Two tasks fall to diesel on its route round a motor. Lubricating comes before burning; it does both. The high-pressure fuel pump and the injectors are made to very fine tolerances, and the diesel passing through them is what stops those surfaces from grinding against each other.
Badly at the first, not at all at the second: that is petrol. Being less viscous than diesel, petrol strips away the protection a fuel system needs, so a pump on that mixture wearing itself. It is equally made to resist igniting under compression — the opposite of what a diesel needs — which is why you get the clattering.
The shape of the trouble is plain once you put those together. It's circulation that does the harm, not contact. Any tank with petrol in it is a fuel issue. A pump that has been labouring on that petrol is the start of a mechanical one, and whatever a worn pump sheds moves on with the fuel to the injectors further on.
Four situations our technicians see around Houghton Park: how bad is petrol in a diesel?
The best case there can be: filled up, not once started. Only that tank has petrol in it, and so the task is draining your tank and cleaning the system where the car sits. This scenario can only really happen on a forecourt: anywhere else, your car got there by being driven.
Started for a moment, or only the ignition on. Once primed, the system has pulled petrol out of that tank up to the fuel filter and the fuel lines. Normally little more than clearing, rinsing and seeing to your filter, so still easy.
The pump has worked a couple of miles on thinned fuel — that is what driving the vehicle does. The work is that tank, the fuel lines, the filter and clean fuel through the whole circuit, and how hard your car was driven counts as much as how far. The school run to Lime Tree Primary Academy is one thing. Any mileage on the M1, under a mile from Houghton Park, means the engine has worked hard throughout, and a run to St Albans, under 15 miles away, is a very different task too.
Clattering, a ragged idle, smoke, a throttle gone soft: driven until it complained. What you are hearing is your engine reporting fuel that no longer runs like diesel. Leave it wherever it has stopped: a lay-by, a quiet street, the verge on Dolphin Drive. A vehicle stopped early very seldom has lasting damage, because the fuel drain and the flush-through, which still come first, sort it out.
Petrol in a diesel stories Houghton Park people hear
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. Nothing is removed when you top up — the tank just holds more of the same blend. That advice assumes a diesel fuel system tolerates petrol by percentage. It doesn't.
"Newer diesels can handle a little petrol" — a myth, and closer to the opposite. More precise parts and higher pressure are how a modern diesel runs its fuel, and that makes the lubrication matter more, not less.
"It starts, it drives, so there is no harm" — the myth that trips up more drivers than any other. Feed diesel to a petrol engine and it generally will not run, and so the motorist 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 will; meanwhile your pump grinds. Being able to run isn't proof of being fine.
Myth: "Add some two-stroke oil and drive it home." It's an old workaround for a distinct issue. None of what petrol weakened is put back by it — and afterwards, that tank still holds that petrol.
"Drain it yourself and you're sorted" — a myth, since after it has been running some petrol sits in the filter and lines, waiting to go straight back through your pump at the next start. On top of that, petrol emptied into a can by the road is truly hazardous.
How it happens: petrol in a diesel
It is seldom carelessness, and no one does it on purpose. The petrol nozzle is the narrower of the two and slides into a diesel filler with almost no resistance; a diesel nozzle generally won't go into a petrol car at all. The forecourt makes it easy, and the slip runs one way.
The moment habit stops matching the vehicle is the moment it takes place. Courtesy car, hire car, or a vehicle that's brand new. Two vehicles on one drive, one petrol, one diesel. Your usual forecourt, its pumps suddenly in a different order. Rushing for a train at Leagrave and filling up en route. Exactly the moment it takes place: after years of driving petrol, someone fills a diesel Renault Megane for the first time. With rain, a call coming in, or a car full of children to deal with, the hand just does what it has always done.
Houghton Park people: how to prevent petrol in a diesel next time
- A green handle for unleaded and black for diesel is usual in the UK — yet not on each forecourt. Trust the label on the petrol pump, not the colour.
- The first fill in a new motor is the time to check the filler flap — on it, or on the cap, many motors state which fuel to use.
- One of each in the household? Mark the key to your diesel — a coloured fob, a sticker — since intending to remember isn't enough.
- It seems daft and it does the trick: on the first fill in a new or hired car, say "diesel" out loud before you take the nozzle off the pump.
- Mistakes like this are simple to make whilst your mind is on something else, so the phone goes away.
- Add-on devices are available for motors without one, and some diesels are built with a filler that will not accept a petrol nozzle. Helpful — but a backstop only, never a reason to stop checking the label.
- Noticing it halfway? Stop there and then. A weaker mixture follows from less petrol in the tank, but your next stage remains the same: do not start the car.
Houghton Park: already put petrol in a diesel?
In that case, there's just a short order of things. Do not turn your ignition on, and don't fire it up. Still at the forecourt, at Esso or anywhere else? Ask the staff to help you push it clear of the pump. Then phone 0333 366 0103 and tell us what was put in, roughly how much, and if it's run.
Corrosion and deposits form the problem with AdBlue, whereas petrol means lost lubrication. So if it was AdBlue, say so — and see its own Houghton Park page.
Why one petrol in a diesel task in Houghton Park costs more than another
Four different jobs lie behind the four scenarios above — which is why there's no fair single quote. Chiefly, the cost shifts with which situation you're in. Two things follow that: the petrol that was put in as a share of what the tank takes, then the place your car is in and whether a technician can reach it safely.
Three queries come first, before quoting, rather than after — what got in, how much, has it run — and that is the reason. Their answers are what change a range into one firm number.
About Houghton Park, for a moment
Houghton Park is a suburban area in Bedfordshire, situated on the riverside with an elevation of around 130 metres. Houghton Park lies near several other residential areas, including Parkside, Tithe Farm, and Linmere, and is approximately 12.9 miles from St Albans. Houghton Park has a population of around 5389 people, predominantly living in terraced housing. Houghton Park is also within commuting distance of London, being around 32.1 miles away.
Across Bedfordshire and in Houghton Park: fuel drain cover
Houghton Park rests in the LU postcode area, and the teams that answer petrol in diesel call-outs there work the spots around it as well — Parkside, Tithe Farm and Linmere among them. Our engineers drain wherever the vehicle is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us.
Still at the pump around Houghton Park?
Then, you could not be in a better spot. Ring, and keep it turned off.