Contaminated fuel in your Mercedes C320? Diesel in a Petrol Mercedes?

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Mercedes Fuel Drain


Filling up with Diesel in a Petrol Mercedes is a regular mistake to make. And exactly what you need to do about it depends upon several different things. In the event that you want to find out what you have to do about it then read on.
Listed here are the most important variables to to consider when choosing whether or not to have your car drained:

  1. How much Diesel have you put into the Mercedes, taking into account that the fuel capacity of your Mercedes C320 is usually approximately 62 litres?
    1. Hardly any Diesel, as little as 3.1 litres of Diesel in a Petrol C320 will quite often not really be a big problem. Experience has taught us that an amount under 3.1 litres (5% of the total fuel tank capacity) is frequently capable of being adequately diluted by completely topping the remainder of the tank with Petrol.
      It is very rare to come across a car or truck suffering from difficulties with less than 5% incorrect fuel contamination. Keep in mind that it is rare - certainly not impossible to find. You can get a few vehicles that won't endure any degree of fuel contamination whatsoever.
    2. Somewhere between 3.1 and 6.2 litres of Diesel in the Mercedes (5 to 10%) is more of a 50/50 condition. Our expertise has shown us that as many motorists get away with it as those who don't. Any time you are figuring out whether or not to chance it and simply top it up bear in mind that it is much like betting it all on black - you will have a 50/50 chance of it being ok.
    3. Anything above 6.2 litres of Diesel in a Petrol C320 really should immediately be drained seeing that your probability of getting away with this quantity of contamination is undoubtedly less than one in fifty - extremely long odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you observed any performance concerns since putting the bad fuel in the C320? If so, have it drained no matter the quantity of Diesel or the contamination percentage. Proceeding to run running an automobile that is now starting to suffer from the effect of fuel contamination will just be responsible for more damage affecting the fuel system.
  3. Would you like security?
    Simply get it drained. Whatever the contamination ratio, there is inevitably a certain level of threat associated with driving a Petrol motor on fuel contaminated with Diesel. Probable final outcomes of driving a car on the wrong fuel include things like the motor not starting, running lumpy, lack of power, degradation of the high-pressure pump, worn or blocked injectors, and so forth. These are some of the most typical Diesel in Petrol signs or symptoms, and should you detect any of them then stop driving and get it drained asap.

Steer clear of having any unqualified mechanic to attend your vehicle. We are Mercedes specialists and have got the skills and experience necessary to ensure you are back on the road with little hassle or worry.

Put Diesel in a Petrol Mercedes

Accidentally put Diesel in a Petrol Mercedes? Or possibly even put contaminated fuel in your Mercedes C320?

Contact us for Help & Recommendations

Give us a call and get straightforward guidance and sensible assistance for your specific circumstance

We show up and do a fuel drain

We would reach you to do the full fuel removal & purge right there on scene

Once performed You Get Moving Once again

Once we have finished you will be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, having national cover, for Mercedes motorists in particular. We mostly attend to:

  • Unleaded petrol in your Diesel Vehicle
  • Diesel in an Unleaded Petrol Auto
  • AdBlue fuel contamination
  • Water contamination

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Regardless of whether it's roadside, on a station forecourt, or even at home, we can get you going once again.

The Procedure

The system of draining Diesel from a Petrol car is basically exactly the same for a large number of cars. Obviously it can vary to some degree as each manufacturer has their own fuel system. However it still basically adheres to the below points:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mercedes

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.

Call us

Should you have any questions or need assistance please Call us!
We are able to get you on the road once again.

24/7 Mercedes Helpline

0333 366 0103

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

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