Wrong fuel in Mountain Ash? Do not start the engine — call 01295 380724. A mobile technician attends anywhere in Mountain Ash, drains the contaminated fuel on site, flushes the fuel lines and refills with clean fuel. Most jobs take 45 to 90 minutes and cost between £199 and £1,999, quoted on the phone before we travel.
If it is a tank rather than a car, we collect and dispose of waste fuel, heating oil and kerosene across Rhondda Cynon Taf, with the paperwork issued before we leave.
Mountain Ash in Rhondda Cynon Taf · CF45 · pin shows the approximate position within the council area
CF45
Welsh team, local drainersA Welsh team and local drainers working every council area from Anglesey to Monmouthshire. Owned and run by Fuel Fixer Ltd — we are not a Welsh-owned company, and we do not claim to be.
Reviewed by Rambo S, Wrong fuel expert, Fuel Fixer · last checked 1 November 2026
Wrong fuel in Mountain Ash at a glance
Place
Mountain Ash
Council area
Rhondda Cynon Taf
Postcode districts
CF45
Trunk roads
the A470, A465 and A4119
Service
Mobile wrong-fuel drain, fuel collection and licensed disposal
Covers
Petrol in diesel, diesel in petrol, AdBlue, unleaded in diesel, red diesel, heating oil and kerosene
Call-out is £89 to £199 and the drain itself is £199 to £1,999. The two are quoted separately, and your exact price is confirmed on the phone before a technician sets off. Remote upland and coastal jobs are quoted with travel included, so the figure you are given is the figure you pay.
Your situation
What is involved
Typical cost
Time on site
Spotted it, engine never started
Drain the tank, flush the lines, refill with clean fuel
£199
45–90 mins
Engine started but not driven
Drain plus a flush of the lines and filter
Mid range
1–2 hours
Driven a short distance
Drain, flush and a check of the pump and injectors
We attend right across postcode district CF45 and the roads linking them, including the Mountain Ash post town area of Rhondda Cynon Taf. the A470, A465 and A4119 are the main routes in, and the valley floors, steep side roads and the Rhondda passes are familiar ground. Wherever the vehicle stopped, that is where it gets drained. Give your postcode on the phone for a price and an arrival window before a technician leaves.
How serious is it?
The fuel itself is not really the danger — circulating it is. In the tank it can be pumped straight back out; past the filter it coats parts that no amount of draining will clean in an afternoon.
What happens when we arrive
On the day the technician confirms what went in, connects the extraction unit and draws the contaminated fuel into a sealed container. The lines and filter are flushed, clean fuel goes in, and the engine is run and checked before anyone leaves Mountain Ash.
Rated 4.8 out of 5 from 6,053 verified reviews on Reviews.co.uk.
Reviews are collected independently and published in full — including the ones we would rather not have. Read every review on Reviews.co.uk or on our Google Business Profile.
No. Starting or driving pumps it through the system and can turn a straightforward drain into an expensive repair. Leave the vehicle where it is and call 01295 380724.
How long does the drain take in Mountain Ash?
About 45 to 90 minutes on site once the technician arrives. Vehicles that were started or driven take longer, because the lines and filter need flushing as well as the tank.
How much does it cost in Mountain Ash?
Most jobs fall between £199 and £1,999 depending on the vehicle, how much wrong fuel is in the tank and whether the engine was started. You get the price on the phone before we travel.
Will it have damaged the engine?
Only if it has been run through the system. Caught before starting, it sits in the tank and a drain removes it cleanly.
Does insurance cover it?
Often not. Most car insurance policies exclude misfuelling as standard, though some breakdown policies and optional add-ons include it. Check your own wording.
Do you cover rural and island Mountain Ash?
Yes. Technicians attend forecourts, roadsides, homes, farms and workplaces across Wales, including the uplands and the islands. Remote jobs are quoted with travel included so the price does not move.