Gillingstool: Put Petrol in a Diesel Car?
If you have not fired up the engine as yet, do not. A fuel drain and nothing else is almost always what a car requires while the fuel is still sitting in your tank and your engine has not yet been started, which is why it is the coming few minutes that count, not how much was put in. Petrol in Diesel goes to the vehicle wherever it has ended up in Gillingstool or the remainder of Gloucestershire, on the forecourt, by the roadside or on a private drive, and drains and cleans it there. Our technicians will show you what the next step is. Contact us — that comes ahead of everything else.
The next five steps: petrol in a diesel
- Don't fire it up — and do not trust it when it runs. That is the bit most people have wrong about petrol in a diesel in particular. A petrol engine filled with diesel usually just cannot run, so the person stops and the harm halts with them. A diesel fed petrol generally starts, ticks over and pulls away perfectly well for several miles. It isn't okay. It is eating into your fuel system as you drive.
- Diesel combusts, and before it combusts it greases — that high-pressure fuel pump, the injectors. Petrol manages only the burning. So leave your ignition alone too: turning it on is commonly enough to prime that system, and priming carries petrol from that tank into exactly those components.
- Topping up takes out nothing. It gives you a larger tank of the same blend, because a diesel fuel system won't tolerate petrol by percentage the way that guidance assumes — so do not tip diesel on top to water down it. Octane is immaterial too: super unleaded is petrol.
- A car that has not moved is the easiest one to sort out, so remain where you are if you sensibly can. Pulled up on the verge on Oakleaze Road? Hazards on, then leave the car there. An awkward spot suits us better than a started diesel.
- Get your location prepared before you dial. A postcode that starts BS35 2 and whatever is nearest to you with a label on it is the difference between our van showing up and a van circling.
- Ring 0333 366 0103. Say what got in, roughly how many litres, and if your car has run. These three replies shape your whole visit.
Forecourt drains for petrol in a diesel
A fair part of the job gets completed at a forecourt, since that is where it usually begins. Still at Thornbury Motors? Then that's typically where it gets done. Petrol station forecourts are normal for us, with the permission of the site.
At a forecourt, it gets stopped with your engine never fired, and nowhere else manages it. Our technicians can still put it right where it is, even away from the pumps. In a car park, on a driveway or in a lay-by, the car has been switched on and driven there, and that drew fuel through the filter and into the high-pressure pump, all the way from that tank. None of that is a calamity, although the flush then has to go past the tank to your lines and the fuel filter, and the few seconds between reading the till receipt and going for the key are what settle that.
Wheel it out of the way if the attendants volunteer, and they usually will. The next motorist gets through the pump, and that's worth doing. Cranking it over four car lengths? Don't.
Diesel Renault Clio. A couple of litres of unleaded. Done a couple of miles. Shut off now, outside Aldi. That is the phone call our technicians like, as the point beneath it is about amount through the pump not hours on the clock.
Each restart primes the lines and draws more petrol through the fuel filter and into the pump. So a misfuelled diesel Nissan Qashqai on the zig-zags outside Gillingstool Primary School is a nuisance, while the same vehicle fired up three more times to be helpful is a fuel system rather than a tank. Somebody will tell you to move it out of the gateway and fix it later. Please don't. Stay put, let them complain, then call us.
Diesel has to be viscous enough to seal the tightly fitted parts it runs through, and petrol weakens it. That is the full mechanism, and it accounts for the ordinary Oakleaze Green call: a diesel Ford Focus that drove out there without a murmur and came back down on power, lumpy at idle, perhaps smoking a little. A diesel injection system works hydraulically as well as chemically — it requires your fuel to hold pressure, not only to burn — so when the fuel thins, pressure that should build and stay built starts escaping past gaps instead, and your engine gets a poorer, later, less even delivery than it was designed round. No part of that is the motor failing, which is the bit worth hearing: it is the fuel no longer behaving like diesel, and it stops when your fuel is sorted.
Our engineers rinse the lines rather than only draining the tank, and the reason is that diluted fuel has already got to your filter and the pump: it was a start and a drive, however short. The drive genuinely assists — pulled off the forecourt, receipt read, a diesel Mercedes C-Class parked up by Thornbury Baptist a few hundred yards later is about as well as this goes once the engine has turned. Ring us then leave it off.
By now the tank is the least of it. Run a diesel and the blend goes into the filter, into the lines, into the pump, into its rail — and none of that leaves with your tank contents. A diesel BMW X1 that made it by Turnberrie's wants its circuit purged. Emptying is not the same thing.
Service near Gillingstool
Thornbury, Sibland, Morton, The Hacket, Crossways — every one of these on the runs that carry us over to Gillingstool as well, a residential suburb.
Not on that list? That means nothing. The places above are just the closest few, and the majority of towns across Gloucestershire have a page of their own somewhere on this site. Ring us to enquire rather than guessing, particularly if you're on the border or somewhere your satnav can't find.
That map outlines the area this page covers. Kerbside, forecourt, drive, car park: the lot is ground our engineers work on, and none of it requires the vehicle to come to us.
Roadside stops across Gillingstool
Not everybody has a safe spot to stop. If you noticed after setting off and finished up by the verge beside Pearce Close, or in a lay-by somewhere with the hazard lights going, that's a common call for us and not an odd one.
Clear of the car when it isn't wise to be in it, beside it if it is. It will usually oblige. A diesel running on petrol limps along perfectly willingly, and that is the catch: start it up to reach somewhere handier and that blend goes further into your fuel system with every mile covered. We'll send the van to an inconvenient spot without any trouble, and for your car that's a lot better than carrying on.
Petrol in a diesel, but your car has travelled
under 3 miles from Gillingstool, the M5 is what matters here. A misfilled diesel will often get you onto it and some distance along before anything seems wrong, while the signs when they come are typically lost power, an uneven idle and smoke instead of a clean stop.
Get off at the first sensible exit, switch off, and never start it to move it. On a longer run — anything approaching the under 15 miles to the closest city — assume the mixture has been through the filter, the pump and the fuel injectors, and mention it when you ring. It affects what our technicians bring.
About Gillingstool
Gillingstool is a suburban area in Gloucestershire, situated near the coast and approximately 11 miles from Bristol. Gillingstool has a relatively low elevation of 46 metres and is characterized by semi-detached housing. Gillingstool is close to nearby places such as Thornbury, Sibland, and Morton, and is about 103 miles west of London.
Once our engineers get to you around Gillingstool: what happens
- Our engineers ask first, price after. What got in? How much? Has the engine run? Those replies change what the work actually is.
- The contaminated mixture is drawn from that tank.
- We purge the lines and clean your filter, and so what is remaining in your system is not what started the trouble.
- Bleeding your system follows, once clean diesel is in.
- Our engineers fire it up and make sure it runs properly on clean diesel.
That leaves your car ready to pull away. All of it is done where the car is, so it never has to be taken to a garage, and when it has been noticed early, lasting damage is very unusual.
AdBlue in your diesel tank instead, around Gillingstool?
If what got in was AdBlue rather than petrol, the first instruction is the same — don't crank it — yet this fault isn't. Thinned diesel, and no lubrication left for your fuel system that depends on it. That's petrol. Rust and residue are what a diesel tank ends up with instead, as AdBlue is urea in water.
We deal with both, and AdBlue removal in Gillingstool has its own page with the details — including why it's usually the more serious of the two.
How much is a petrol-in-diesel drain around Gillingstool?
What moves the price is laid out below, since the job isn't one job and our engineers can't frankly put a single price on this page.
- Whether the motor has been started or driven. This is the main one.
- The tank's capacity, set against how much of the wrong fuel got into it.
- AdBlue or petrol, whichever got in.
- Whether a technician can sensibly reach your car and work on it, which depends on where your vehicle is.
Tell us what your vehicle is, how much went in, and if the engine has run. A straight answer comes back, not a range. Motor at home, going nowhere, nothing time-critical about it — is fine for that.
Questions we hear about petrol in diesel in Gillingstool
I am on a forecourt in Gillingstool. Can you drain the vehicle here?
Yes, and it is where a large part of this work happens. Tell us which one you're at when you phone and we will tell you whether our technicians can work there. With the site's consent our technicians visit Tesco and the other forecourts around town routinely.
A couple of litres of petrol in a diesel — too much?
Litres aren't the measure. Proportion is, and a lot more than either, it matters if anything has been run. What decides how much work is needed is whether that blend has been pulled through your fuel system — since although five litres in a nearly empty tank is a different matter from five in a full one, either way that is the query.
Petrol in my diesel, and I have driven the car
Stop sensibly. Off. Nothing after that. Not restarting it is the single most valuable thing available to you now. Driving does shift the trouble out of that tank then into your pump and injectors, yes, and it stays recoverable much more often than people assume.
Will a fuel drain void my warranty?
It is not a modification, and so a drain then flush carried out properly does not void a manufacturer's warranty. Another good reason to leave it turned off: running a diesel on petrol is the thing more likely to cause a dispute with one.
Adding two-stroke oil, then driving home
No. It belongs to a separate issue from a bygone era, and petrol has diluted something no oil of that kind replaces. Your pump still has to live with it, since that tank still has petrol in it later.
Does petrol in a diesel have to go to a main dealer?
No. Our engineers drain and flush the car wherever it is, so there is no need to take it to a dealership.
Still with the car?
Your engine remains off.
Switch it off somewhere safe and leave it off, if you have already driven it. This is recoverable from a lot more often than motorists expect, and a still, cold car is the best place to be in.
Across Gloucestershire and around Gillingstool: mobile fuel draining, at home or on the forecourt or at the kerbside.