Wrong fuel in a Mercedes R300? Diesel in your Petrol Mercedes?

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Mercedes Fuel Drain


Filling up with Diesel in a Petrol Mercedes is a regular problem. And its solution hinges on several things. In case you would like to know what you ought to do about it then read on.
Right here are the most crucial factors to keep in mind when deciding on whether to get your car drained:

  1. What level of Diesel have you put in to the Mercedes, bearing in mind that the fuel tank capacity of the Mercedes R300 is probably about 80 litres?
    1. A modest quantity of Diesel, less than 4 litres of Diesel in a Petrol R300 will normally not be a major problem. Experience has shown us that an amount under 4 litres (which is approximately 5% of the overall fuel tank capacity) is oftentimes able to be sufficiently diluted by means of completely topping the remainder of the tank with the right fuel.
      It's very uncommon to come across a motor vehicle going through difficulties with under 5% wrong fuel contamination. Be aware that it's uncommon - definitely not impossible to find. You will discover some motor vehicles that will not stand any quantity of contamination whatsoever.
    2. Between 4 and 8 litres of Diesel in the Mercedes (from 5 to 10%) is a 50/50 scenario. Our working experience has proven that as many drivers get away with this as those who break down. Whenever trying to decide whether or not to chance it and just simply fill it up bear in mind that it is very much like wagering all of it on black - you have got a 50/50 chance of it working out.
    3. Anything more than 8 litres of Diesel in your Petrol R300 ought to straightaway be drained out as your likelihood of driving with that quantity of contamination is in all likelihood lower than one in 50 - genuinely huge odds.
  2. Put some Diesel in a Petrol Mercedes and drove it: Have you detected any kind of performance problems as a result of putting the wrong fuel in your R300? In that case, have it emptied irrespective of the amount of Diesel or even the contamination ratio. Continuing to run running a vehicle that is currently beginning to suffer the effect of fuel contamination can definitely end up in even more harm affecting the fuel system.
  3. Are you looking for peace of mind?
    Simply get it removed. No matter the contamination ratio, there is invariably a certain level of threat affiliated with operating a Petrol engine on Petrol contaminated with the wrong fuel. Likely implications of driving a car on the wrong fuel normally include the engine not starting, running unevenly, loss in power, wearing of the high-pressure pump, worn or blocked injectors, and the like. These are some of the most common Diesel in Petrol signs or symptoms, and if you notice any of them then stop and get it drained asap.

Don't just get any unqualified so-and-so to try to drain your automobile. We are Mercedes experts and possess the accreditation and experience required to ensure you are back on the road with little hassle or trouble.

Put Diesel in a Petrol Mercedes

By mistake put Diesel in a Petrol Mercedes? Or possibly even put contaminated fuel in your Mercedes R300?

Contact us for Help & Advice

Contact us and obtain sincere advice and sensible assistance for your specific circumstance

We show up and drain it

We would reach you to undertake the complete fuel retrieval & clean there on scene

Once completed You Get Moving Once again

Once we are done you are able to get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain specialists in the UK, offering nationwide service, for Mercedes motorists particularly. We principally deal with:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Whether or not it's at the roadside, on a filling station forecourt, or even at your home, we can get you going again.

The Procedure

The method of extracting Diesel from a Petrol vehicle is in essence the same for the majority of vehicle makes. Of course it can differ a bit as each manufacturer has their own different fuel system. Nevertheless it still basically observes the following guidelines:

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

If you have any concerns or require assistance please Contact Us!
We are able to get you on the road again.

24/7 Mercedes Helpline

0333 366 0103

Our Corporate Office

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


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