Bad fuel in a Hyundai Sonata? Diesel in your Petrol Hyundai?

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Hyundai Fuel Drain


Filling Diesel in a Petrol Hyundai is a fairly typical problem. And exactly what you need to do about it will depend on various factors. If you want to find out what you need to do about this then keep on reading.
Let us discuss the most important factors to take into account whenever choosing whether to have a fuel drain:

  1. What level of Diesel have you put in the Hyundai, taking into account that the fuel tank capacity of the Hyundai Sonata is probably approximately 52 litres?
    1. A modest quantity of Diesel, as little as 2.6 litres of Diesel in a Petrol Sonata will most of the time not be a huge problem. Experience has taught us that an amount less than 2.6 litres (roughly 5% of the fuel tank) is generally capable of being completely diluted through thoroughly topping the rest of the tank with Petrol.
      It's pretty unusual to find a car or truck suffering from problems because of lower than 5% wrong fuel contamination. Bear in mind that it is infrequent - definitely not impossible to find. There are a number of automobiles that won't stand any amount of fuel contamination whatsoever.
    2. Somewhere between 2.6 and 5.2 litres of Diesel in the Hyundai (5 to 10%) is more of a 50/50 scenario. Our experience has shown us that as many motorists get away with this as those people who don't. Any time you're deciding whether or not to chance it and simply top it up bear in mind that it is very much like gambling it all on black - you've got a 50/50 chance of it working out.
    3. Anything more than 5.2 litres of Diesel in your Petrol Sonata should really promptly be removed as your likelihood of succeeding with this level of contamination is probably below one in fifty - seriously huge odds.
  2. Put some Diesel in a Petrol Hyundai and drove it: Have you observed any performance issues ever since putting the bad fuel in the Sonata? If that's the case, get it emptied regardless of the amount of Diesel or the contamination ratio. Continually running a motor vehicle that is starting to suffer from the consequences of wrong fuel contamination will typically bring about progressively more damage being caused to the fuel system components.
  3. Do you need assurance?
    Then simply just get it removed. No matter the contamination ratio, there is invariably some extent of threat in connection with operating a Petrol motor on fuel contaminated with the wrong fuel. Probable implications of driving a car on the incorrect fuel include things like the engine not starting, running unevenly, lack of power, degradation of the high-pressure pump, worn out or clogged injectors, and the like. These are a few of the most frequently seen Diesel in Petrol signs and symptoms, and should you notice any of them stop and get it drained immediately.

Keep away from getting any untrained so-and-so to attend your car. We are Hyundai experts and possess the qualifications and experience required to ensure you get back on the road with no hassle or trouble.

Put Diesel in a Petrol Hyundai

Accidentally put Diesel in a Petrol Hyundai? Or possibly even put contaminated fuel in your Hyundai Sonata?

Give us a call for Assistance & Guidance

Give us a call and obtain genuine guidance and practical help for your precise situation

We show up and drain it

We can reach you to carry out the full contaminated fuel retrieval & purge right there on scene

All done & You Get Going Once again

When we are done you will be able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain authorities in the UK, offering nationwide service, for Hyundai motorists especially. We primarily attend to:

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

We are Hyundai specialists and have successfully drained thousands of Petrol Hyundai vehicles. Regardless of whether it is roadside, on a petrol station forecourt, or even at home, we are able to get you going again.

The Process

The technique of draining Diesel from a Petrol car is generally similar for a large number of vehicle makes. Obviously it may differ to some extent as every brand has their particular different fuel system. Having said that it still basically observes 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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Diesel in Petrol Questions

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

I put Diesel in a Petrol 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 Petrol car on Diesel 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 Diesel can I get away with in a Petrol 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 Petrol 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.

Contact Us

In case you have any questions or require some assistance please Contact Us!
We can get you moving again.

24/7 Hyundai Helpline

0333 366 0103

Our Corporate Office

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

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