Wrong fuel questions answered
Short answer
Straight answers to the questions drivers actually ask. Misfuel Doctor drains petrol from diesel, diesel from petrol, AdBlue and red diesel on-site anywhere in the UK, usually within 45 to 90 minutes of arriving, from just £89 misfuel callout fee. Do not start the engine — call 01295 380724.
Answers
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Wrong fuel questions: how it works
| Service | Mobile wrong-fuel drain and flush |
|---|---|
| Covers | Petrol in diesel, diesel in petrol, AdBlue, red diesel, contaminated fuel |
| Area | England, Scotland, Wales and Northern Ireland |
| Misfuel callout fee | From just £89, quoted before we travel |
| Time on site | 45–90 minutes |
| Helpline | 01295 380724 — 24 hours, 7 days |
What to do right now
- Do not turn the key or start the engine — that is what turns a drain into a repair.
- Do not move the vehicle. On a forecourt, apply the handbrake and tell the station staff.
- Call 01295 380724 with your location, vehicle and which fuels were mixed. You get the price before we set off.
- A technician attends with a licensed drainage unit and makes the area safe.
- The contaminated fuel is pumped out and the fuel lines are flushed through.
- Clean fuel goes in, the vehicle is started and checked, and you drive away. The waste fuel leaves with us for compliant disposal.
What it costs
| 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 | Call-out £89–£199 · drain £199–£1,999 | 45–90 mins |
| Engine started but not driven | Drain plus a flush of the lines and filter | Drain in the £199–£1,999 range | 1–2 hours |
| Driven a short distance | Drain, flush and a check of the pump and injectors | Higher in the £199–£1,999 range | 1–3 hours |
| Driven until it lost power or cut out | Drain, flush and fuel-system diagnosis | Upper end of £199–£1,999 | Assessed on site |
| AdBlue in the diesel tank | Full drain and flush of tank and fuel lines | Quoted per vehicle | 1–3 hours |
Common questions
Can I drive with petrol in a diesel car?
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?
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 the UK?
The call-out is £89–£199 and the drain £199–£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 anyone travels.
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 the UK?
Yes. Mobile technicians attend forecourts, roadsides, homes and workplaces across the UK, 24 hours a day.
Who you are dealing with
Misfuel Doctor is a brand of Fuel Fixer Ltd (company number 08520551), a company of Fuel Fixer International, the multinational group behind this website. Fuel Fixer International is owned by Stockbridge Capital Holdings, a private equity group. Work is carried out by Fuel Fixer Ltd technicians under ISO 9001 and ISO 14001, with Environment Agency waste-carrier registration.
Background reading: Misfuelling (Wikipedia). Service operated by Fuel Fixer, alongside Wrong Fuel, Fuel Fixer Scotland and Misfuel Servicing, part of Fuel Fixer International and owned by Stockbridge Capital Holdings.