Got questions? Here are quick answers to the most common misfuelling situations.
FAQ
Misfuel Hero provides a fast, urgent roadside solution for drivers who have put the wrong fuel in their vehicle.
I've put the wrong fuel in my car what do I do?
Stop immediately and do not start the engine. Starting the vehicle circulates contaminated fuel and can cause serious damage costing thousands. Contact Misfuel Hero straight away.
How quickly can you get to me?
We aim to arrive within 30-60 minutes nationwide. A faster response reduces the risk of damage and keeps costs lower.
I already started the engine - is it too late?
No, but the risk is higher. We can still drain and flush the system, though damage may already have started. Immediate action is essential.
What damage can wrong fuel cause?
Petrol in diesel engines can destroy pumps and injectors. Diesel in petrol engines can block the system and cause misfiring. Repairs can exceed £1,000-£5,000.
Can I top up with the correct fuel and keep driving?
No. Fuel mixes instantly, and driving will worsen contamination and increase the likelihood of major damage.
I'm not sure if I used the wrong fuel - what should I do?
Do not guess. Contact us immediately for guidance to avoid costly mistakes.
Is there a cheaper non-emergency option?
Yes, if the vehicle has not been started, we may offer a scheduled service at a lower cost.
What does your service include?
We drain the contaminated fuel, flush the system, and where possible refill with the correct fuel.
Most work is completed roadside without towing.
Do you accept card payments?
Yes, all major debit and credit cards are accepted.
Do you operate at night or weekends?
Yes, Misfuel Hero operates 24/7 nationwide.
Do you cover all vehicle types?
We assist cars, vans and motorcycles across the UK.
What happens to the contaminated fuel?
All fuel is disposed of safely in line with UK environmental regulations.
Will this affect my warranty?
Misfuelling can void warranties, so acting quickly helps minimise long-term impact.
I've put AdBlue in my fuel tank what should I do?
Do not start the engine. AdBlue can cause corrosion and crystallisation inside the fuel system, leading to severe damage. Call Misfuel Hero immediately. If started, repair costs can be significant, so fast action is critical.
It's late at night - can I still call?
Yes, our emergency service is available 24 hours a day, 7 days a week.
Frequently Asked Questions(FAQ)
What happens if I start the engine after misfuelling?
Starting the engine allows the wrong fuel to circulate and can cause serious damage. However, the system can still be cleaned and repaired by professionals.
How much damage can it cause?
Misfuelling can lead to costly repairs and may even result in complete engine failure if not handled quickly.
Can the engine be saved?
In many cases, yes. If handled quickly, the system can be cleaned and restored. Even if the engine has been started, it is not always a total loss.
How quickly should I act?
Immediately. The faster you act, the lower the risk of damage and repair costs.
What does the service involve?
A trained engineer will come to your location, drain the contaminated fuel, and clean the system so your vehicle can run properly again.