--- title: Fuel Drain in Towns End — Petrol in a Diesel Car canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/towns-end-somerset/ location: Towns End county: Somerset latitude: 50.973890 longitude: -2.387770 service: Petrol in a Diesel Car updated: 2026-10-01 --- # Towns End: Put Petrol in a Diesel Car? With that tank still holding the petrol and the engine not yet started, nearly every job requires only a drain, so leave the motor off. That result is determined in the minutes right after the fill-up, rather than by the amount that was put in. All over Towns End and the remainder of Somerset, Petrol in Diesel drains your car and flushes it where it sits, whether by a roadside, on a drive or at a forecourt. Phone and then we can tell you what happens from here before you attempt anything else. ## Your first five minutes: petrol in a diesel - Don't start the car. Started all the same? Then do not depend on it. Diesel in a petrol vehicle typically can't run, and so the motorist stops and the harm ends with them. Petrol in a diesel? It starts. It ticks over. It moves off normally, for a few miles. Most people get that backwards. It isn't okay — that fuel system is grinding every mile you do. - Leave the car's ignition alone too. Diesel does two tasks: it ignites, and before it burns it protects the injection pump and those injectors. Petrol manages the first and not the second. Turning the ignition on is often all it takes to prime your system, which draws that petrol out of the tank then into exactly those components. - Never weaken it. Diesel tipped on top clears nothing, and so all you have is more of what was already there, since percentage isn't how a diesel fuel system accepts petrol. Super unleaded? Still petrol. The grade makes no difference. - Stay still if it's safe to. Hazards on, engine off, leave the car. Wherever you have stopped — the verge on The Mead, anywhere — an awkward location for us is better than a started motor, and nothing is quicker for us to deal with than a motor that never shifted. - Have your position ready before you dial. A postcode beginning BA8 0 and whatever is next to you with a sign on it is the difference between the van showing up and a van circling. - What got in, about how much, and whether the motor has started — those three replies shape the entire visit. Ring 0333 366 0103 and tell us. ## Forecourt draining for petrol in a diesel A large portion of this work ends up completed at a pump, since that is where it usually begins. The drain normally happens on the spot. Still on the forecourt at Murco? Given the station's permission, that is a place our engineers work, and often. At a garage, this gets caught with the motor never started, and no place else manages that. Fuel drawn out of the tank and through the fuel filter, right to the high-pressure fuel pump, is what occurs when the engine is started and the vehicle is driven to where it is now: the car park, the drive or the lay-by, anywhere other than the forecourt. So the flush includes your filter and the lines along with that tank. That is still not a calamity, and we deal with it where your car is. What decides it is whether the key was reached for in the seconds after your receipt was checked. Out from the petrol pump, the next customer can get through — so yes, let the staff help you roll the vehicle. Very much worth doing. Starting the car over four car lengths? Not a chance. Tell us this much and our engineers can work with it: a diesel Renault Clio, some litres of unleaded in it, two miles or so, switched off at Dike & Son now. Time passed isn't the thing our engineers need. Fuel drawn by your pump is. ## Do our technicians serve your part of Towns End? Towns End is a residential suburb, so our team are out to the town and to the areas near it on the same trips: Henstridge, Henstridge Ash, Higher Marsh, Whitchurch and Stalbridge. Not on this list? That means nothing. The places above are only the nearest few, and the majority of locations around Somerset have a page of their own somewhere on the site. Assuming is the mistake to skip, particularly on a border or anywhere your satnav goes wrong. Phone and enquire. See this map for the patch shown on this page. The lot is territory our technicians serve: a kerbside, a forecourt, a private drive, a car park. You don't bring your car anywhere. Somebody will advise you to move it out of that gateway and sort it out later. Do not. A misfilled diesel Skoda Octavia on the zig-zags at St Nicholas CofE Primary School, Henstridge is a nuisance; the same car started three more times to be courteous is a fuel system rather than a tank. Every restart primes your lines and pulls more petrol past the fuel filter then into your pump. Leave it, let people complain, and ring us. ## Towns End: stuck wherever you parked The opportunity to stop somewhere sensible doesn't come to everyone. Hazards going in a lay-by somewhere, or stopped on the verge of Stalbridge Road because you worked it out after setting off — we take that call so often that it's the ordinary kind. Remain with the motor if it is safe to sit inside, yet clear of the car if it isn't. Do not start up the engine to nurse the car somewhere safer — a diesel running on petrol will usually oblige, and every mile it obliges for is drawing that mixture further into your fuel system. However inconvenient the place, it's no problem for us to get to it, and that's much better for the vehicle than pressing on. The parts that should be getting oiled are wearing instead, and the vehicle gives no sign of it: a diesel on a thinned tank starts and moves off just fine. Try the trip home from Bird in Hand? No. Ring us then leave the Audi A4 where it stands. ## Already driven it? Petrol in a diesel after a couple of miles under 50 miles from Towns End, your M5 is what counts now. Some distance along, and onto it in the first place: a wrongly fuelled diesel will usually do both before anything feels wrong. What you get then is seldom a tidy stop. Power ebbs away, your idle turns lumpy, and there may be smoke. Take the first junction that is sensible, stop there, and do not start the vehicle to reposition. Presume the worst of that on a long trip. Anything close to the under 25 miles to the nearest city, and the petrol has been through your filter, through your pump, through the injectors. Say so when you ring. What our engineers bring alters. Injection pressure is the thing being lost. Petrol weakens diesel, and thinner fuel leaks past the close-fitting parts that are supposed to build that pressure, so the farther a diesel Ford Focus travelled, the less well it held. Normal on the way out and flat on the way back is how that drive to Oak Vale Wood went, then, and your tank is where to look. Stop somewhere safe, turn off and ring us. ## Towns End itself Towns End is a small suburban area in inland Somerset, situated at an elevation of 69 metres. Towns End lies near the villages of Henstridge and Henstridge Ash, and is approximately 19.7 miles from the city of Wells. Towns End has a population of around 835 people and is characterised by predominantly terraced housing. ## What we do when our technicians reach you in Towns End - Three things get asked before any quote — the fuel that went in, the amount, and if anything has been run since. Each answer alters the work. - Out flows the polluted mixture. - Fuel lines are purged through and your filter cleaned, leaving nothing in the fuel system that created any of this. - Priming follows, once new diesel is in. - It's run with clean diesel in it, and our technicians check that it's running properly. From that point, you are ready to set off. There's no need to go to a garage at any point, since the work is all done where your car is, and when it is spotted soon, lasting damage is very unusual. ## Towns End AdBlue removal is a different matter AdBlue instead of petrol? Then the opening instruction is unchanged — the engine stays off — whereas this fault underneath it is a separate one altogether. The protection a fuel system relies on gets stripped away by petrol, which thins your diesel. Urea in water, AdBlue, and in a diesel tank that brings corrosion and deposits. Often the more significant of the two, AdBlue — and the full story lives on its own Towns End page. Both are ours to deal with. Switch off where you have stopped, and don't start it to find somewhere better — near Henstridge Village Hall or anywhere at all. Knocking, an uneven idle, white smoke and a limp throttle are a misfuelled diesel Dacia Duster telling you what's wrong. ## Budgeting for a petrol-in-diesel drain in Towns End We can't put one figure on this page truthfully, as this job isn't one job. What moves it: - Has it been started or driven? Nothing else matters for as much. - How much of the wrong fuel got in, judged against how much your tank can hold. - Whether it is petrol or AdBlue. - Where your vehicle is, and whether our van can safely reach and work on it. Tell us what your vehicle is, how much got in, and if your motor has run. A firm answer comes back, not a range. For the car at home that's going nowhere and isn't urgent, is fine too. ## Towns End motorists ask us these about petrol in diesel ## I am on a forecourt in Towns End. Can you drain the car here? Yes — forecourts are where a big portion of this takes place. Agreement from the site is the condition. Given that, a forecourt like G&A Cook is somewhere we're regularly, along with the rest of them locally — so name yours on the phone and you'll hear whether working there is possible. ## How much petrol is too much for a diesel? Proportion settles it rather than litres — and more than either, whether your motor has run. Five litres in a nearly empty tank is a different matter from five in a full one — but either way, the thing that determines how much work is needed is whether that mixture has been drawn through the system. ## I put petrol in my diesel and drove the car. Now what? Turn off somewhere safe, then keep it that way after you stop. Driving takes the trouble along — out of the tank, into your pump and injectors. People fear it a good deal more than the recovery rate warrants, mind. The one genuinely valuable thing left to you is not restarting the car. ## Fuel drains and manufacturer warranties It's not a modification, so a drain then flush carried out properly does not invalidate a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause a dispute with one, which is another reason to leave it turned off. ## Adding two-stroke oil, then driving home Two-stroke oil solves a separate problem, and an old one at that. Nothing it does puts back what petrol diluted. No. Petrol remains in that tank afterwards, whatever else goes in, and the pump gets no break from it. ## Main dealers and petrol in a diesel You don't need one. The car is drained and cleaned wherever it is, with no need to take it to a dealership. ## Is your vehicle still with you? Do not turn the engine back on. If you have already driven the car, pull in somewhere sensible, turn it off then keep it off. This is recoverable from far more often than drivers assume, and a still, cold vehicle is the best position to be in. At the kerbside, on the forecourt or at home — mobile fuel draining around Towns End and throughout Somerset.