--- title: What Now? Petrol in a Diesel Car Greenlaw Mains canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/greenlaw-mains-midlothian/ location: Greenlaw Mains county: Midlothian latitude: 55.841110 longitude: -3.219830 service: Petrol in a Diesel Car updated: 2026-10-25 --- # The Next Steps, in Order: Petrol in a Diesel Car in Greenlaw Mains Stop. Engine off. Leave the car that way — no second on, no shifting it at all. Hasn't been run? Then petrol in a diesel tends to be a simple drain-and-flush job wherever your vehicle has stopped — and no other factor decides that as much as the next few minutes do. What follows is the sequence from this point, wherever around Greenlaw Mains you happen to be. ## Petrol in a diesel, motor off — the first minute Work through these in order, before you do anything else. - The keys out of the ignition. Switching the ignition on can be enough to prime your fuel system, while priming draws petrol out of the tank toward the components it damages. Leave the vehicle off completely. - Do not top it up with diesel. Adding diesel removes nothing. You are left with a bigger tank of the same mixture. - Make your car simple to see first — hazard lights on — if there's traffic going past anywhere near you. - The staff will usually help you push it away from the pump. Ask, and roll it by hand — never under your engine, even for a couple of yards. - Which fuel, and roughly how much? Your receipt replies both, and that's where our questions start. Never bin it. If you were still on the move when you noticed, stop somewhere safe instead of pushing on for the services — on the M8, under 10 miles from Greenlaw Mains, that means the next junction. Stage one comes next. ## Greenlaw Mains fuel drain: has the motor run yet, or not? What comes after this turns on one answer, and just one. If the engine has not run at all: - The petrol is still in that tank and nowhere else. - Normally it's drained and rinsed just where the vehicle is. - No place is better, and it is why the first step counts so much. Run at all, even for a second: - The lines and the fuel filter now hold petrol pulled from that tank. - A bigger run takes it all the way to the high-pressure pump and the fuel injectors. - Miles is what makes it a bigger job: the lines flushed, a filter seen to, and at times more than that. The line falls there because diesel protects the high-pressure pump and the injectors on its way through them — and petrol doesn't. In that tank, sitting still, petrol harms nothing. Move the petrol, though, and it wears the very parts that move it. ## Before you call about petrol in a diesel in Greenlaw Mains: what our technicians need Whether the van goes round or finds you depends on a little preparation. - The best place to start is a postcode — one beginning EH26 0 — for where you are. - The street or the car park. A road name is a help — Boyd-Orr Drive, or wherever you have pulled up. - Describe a car park by what it serves — the one at Tesco, for instance — and it's much easier to find. - That it's a diesel, plus the make and model of your car. - Petrol or AdBlue? Tell us which. They are different jobs, and AdBlue has a separate Greenlaw Mains page. - How much. Litres from your receipt, or how long the nozzle was in the filler. - If it has run, how far and how hard — as well as whether it has run at all. - Hire or company car? Some agreements need the owner's go-ahead for this work, and sorting it before we arrive is quicker than after. Call 0333 366 0103 next. Email is fine too if it can wait, with the car left at home, going nowhere. ## Greenlaw Mains fuel drain on its way? Whilst you wait Stick to these: well-meant help causes the harm during the wait. - Where your car has stopped settles where you wait. Somewhere exposed: away from it, away from the traffic. Safe: with it. Either way, safety before your car. - No one starts it. Not a passer-by being kind, not to check it is all right, not to roll the car a couple of yards. - Additives remain in your boot. Injector cleaner and two-stroke oil draw none of the petrol out again. - No DIY clearing. Siphoning petrol into a can by the roadside is risky, and it leaves your fuel that has already gone beyond that tank. - Not for the radio, not for your windows: your ignition stays off. ## The fuel drain, step by step, after our van arrives - Our price comes after three queries, not before them — what went in, how much, and if it's run — since those answers decide the job. - Your tank is drained. The tainted mix comes from that tank. - Cleaning your lines comes next, because a car that ran has petrol past your tank, in the lines themselves. - Your filter is seen to. Cleared, or replaced where the car has a usable one. - Bleeding your system follows after clean diesel is in. - The first start on new diesel. When bleeding is finished, the motor is started and our technicians confirm that it runs correctly. Till it runs on fresh diesel, we remain with it. Lasting damage is very unusual when it has been spotted quickly, so your car can go straight back to normal driving. ## Back on the road in Greenlaw Mains after the fuel drain - Drive normally. There is nothing special to do once it's been started on clean fuel. - Watch the first miles. A warning light, smoke, a lumpy idle or a flat spot under the throttle means pull over and ring us back. - Hold on to your documents. A hire company, a fleet manager or an insurer may ask what was carried out. - Read the label on the pump next time, not the colour of its handle. ## About Greenlaw Mains, briefly Greenlaw Mains is a suburban area situated on the riverside in Midlothian, with a mix of semi-detached housing and a relatively small population. Greenlaw Mains sits near the southern edge of the Pentland Hills, at an elevation of around 199 metres, and is close to several nearby communities including Mauricewood and Beeslack. Greenlaw Mains is located near Edinburgh, Scotland's capital city, which is about 7.8 miles away. Greenlaw Mains has a population of approximately 3984 residents. ## Greenlaw Mains and nearby: fuel drains across the area The same vans that answer petrol in diesel calls in Greenlaw Mains serve Mauricewood, Beeslack and Deanburn, and most of Midlothian beyond them. Somewhere tricky to describe, or close to a boundary? Asking is better than assuming — ring. ## Petrol in a diesel across Midlothian? Leave it off then ring Keys out, engine off, your receipt in your pocket: that's step one done. The remainder is for Petrol in Diesel, wherever the car is — forecourt, kerbside or drive.