Wrong fuel in your Hyundai i40 CRDi? Petrol in your Diesel Hyundai?

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Hyundai Fuel Drain


Filling Petrol in a Diesel Hyundai is a regular mistake to make. And exactly what you need to do about it will depend on several different things. Assuming you want to find out what it is best to do to fix it then please read on.
Listed here are the most crucial factors to be aware of whenever determining whether to get a fuel drain:

  1. Exactly how much Petrol have you put into the Hyundai, taking into consideration that the fuel tank capacity of the Hyundai i40 CRDi is normally around 70 litres?
    1. Hardly any Petrol, something like 3.5 litres of Petrol in a Diesel i40 CRDi will generally not really be a massive problem. Experience has taught us that quantities under 3.5 litres (which is approximately 5% of the entire fuel tank) is oftentimes capable of being adequately diluted by wholly topping up the rest of the tank with the right fuel.
      It's highly rare to encounter a car or truck experiencing issues with lower than 5% wrong fuel contamination. Do not forget that it's unusual - definitely not impossible to encounter. You will discover a few motor vehicles that don't stand any amount of contamination whatsoever.
    2. Anywhere between 3.5 and 7 litres of Petrol in the Hyundai (from 5 to 10%) is a 50/50 scenario. Our working experience has proven that as many drivers get away with this as all those who break down. Whenever deciding upon whether to chance it and just simply top it up recognise that it is exactly like betting it all on black - you have a 50/50 possibility of it being ok.
    3. Anything above 7 litres of Petrol in your Diesel i40 CRDi must straight away be drained as your probability of succeeding with that level of contamination is more than likely less than one in fifty - seriously long odds.
  2. Put some Petrol in a Diesel Hyundai and drove it: Have you seen any performance problems after putting the wrong fuel in the i40 CRDi? If that's the case, have it drained irrespective of the quantity of Petrol or even the contamination percentage. Proceeding to drive driving a car that is now beginning to suffer from the consequences of wrong fuel contamination will typically be responsible for more and more harm being done to the fuel system.
  3. Do you need peace of mind?
    Then simply just get it drained. Regardless of the contamination ratio, there is inevitably some extent of danger resulting from driving a Diesel vehicle on Diesel contaminated with the wrong fuel. Likely implications of driving a vehicle on the wrong fuel include the motor not starting, running lumpy, decrease in power, degradation of the high-pressure pump, worn out or bunged injectors, etc. These are several of the most frequently seen Petrol in Diesel signs or symptoms, and should you notice any of them stop and get it removed as soon as possible.

Steer clear of having any unqualified mechanic to attend your automobile. We are Hyundai experts and possess the certification and expertise necessary to make sure that you get back on the road with a minimum of hassle or worry.

Put Petrol in a Diesel Hyundai

Unintentionally put Petrol in a Diesel Hyundai? Or even put contaminated fuel in your Hyundai i40 CRDi?

Contact us for Assistance & Advice

Give us a call and get genuine recommendations and sensible assistance for your exact circumstance

We come out and do a fuel drain

We are able to come to you to carry out the complete contaminated fuel drain & purge there on scene

Once carried out You Get Going Once again

Once we are done you can get back on the road and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain professionals in the UK, offering countrywide coverage, for Hyundai motorists particularly. We mainly fix:

  • Unleaded petrol in Diesel Vehicle
  • Diesel in Unleaded Petrol Vehicle
  • AdBlue fuel contamination
  • Water contamination

We are Hyundai specialists and have successfully drained hundreds of Diesel Hyundai vehicles. Whether or not it is roadside, on a station forecourt, or even at your home, we can get you moving once again.

The Process

The system of draining Petrol from a Diesel vehicle is basically the same for the majority of motor vehicles. Obviously it may differ somewhat as every brand has their particular distinct fuel system. Nevertheless it still fundamentally adheres to the below guidelines:

Petrol in Diesel Hyundai

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Hyundai

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Hyundai

Vehicle Restart

Get the car up and running again

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Petrol in Diesel FAQs

When someone has put Petrol in a Diesel car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Petrol in a Diesel car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Diesel car on Petrol cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Petrol can I get away with in a Diesel car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Diesel and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Get in Touch

Should you have any questions or require our assistance please Contact Us!
We can get you on the road once again.

24 hour Hyundai Helpline

0333 366 0103

Our Business Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

Weekdays: 9am to 5pm

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