Contaminated fuel in a Mercedes SL 280? Diesel in a Petrol Mercedes?

We can help!
Call us: 0333 366 0103
Mercedes Fuel Drain


Putting Diesel in a Petrol Mercedes is a regularly occurring mistake to make. And its remedy is based on various factors. Assuming you would like to know what it is advisable to do to fix it then keep on reading.
Listed here the key factors to consider when figuring out whether or not to have it drained:

  1. What amount of Diesel did you put into the Mercedes, keeping in mind that the fuel tank capacity of your Mercedes SL 280 is most likely about 80 litres?
    1. Hardly any Diesel, less than 4 litres of Diesel in a Petrol SL 280 will usually not really be a significant problem. Experience has proven to us that an amount under 4 litres (about 5% of the entire fuel tank capacity) is generally capable of being completely diluted through entirely topping the rest of the tank with the appropriate fuel.
      It is rather uncommon to find a car or truck going through difficulties with below 5% incorrect fuel contamination. Please remember it is rare - not impossible to encounter. There are actually certain automobiles that will not endure any degree of contamination in the slightest.
    2. Somewhere between 4 and 8 litres of Diesel in the Mercedes (5 to 10%) is really a 50/50 condition. Our practical experience has proven that as many people get away with this as those who break down. Any time you are deciding whether or not to chance it and simply top it up remember that it is exactly like wagering everything on black - you will have a 50/50 chance of it being ok.
    3. Anything in excess of 8 litres of Diesel in your Petrol SL 280 should really as soon as possible be drained because your likelihood of getting away with that level of contamination is certainly lower than one in 50 - definitely long odds.
  2. Put Diesel in a Petrol Mercedes and drove it: Have you seen any kind of performance issues since putting the wrong fuel in the SL 280? If so, have it drained no matter the volume of Diesel or even the contamination percentage. Continuing to drive driving a vehicle that is now beginning to suffer the effect of fuel contamination can likely end up in more damage being done to the fuel system parts.
  3. Do you need peace of mind?
    In that case get it drained. No matter the contamination percentage, there is invariably some amount of risk associated with driving a Petrol engine on fuel contaminated with Diesel. Likely final outcomes of driving on the incorrect fuel include the engine not starting, running unevenly, loss in power, wearing of the high-pressure pump, worn or bunged injectors, and so on. These are some of the most frequently seen Diesel in Petrol signs or symptoms, and in the event that you detect any of them then stop and have it drained right now.

Avoid having any general so-and-so to try to fix your car. We are Mercedes experts and have got the accreditation and working experience required to make certain that you are back on the road with minimal hassle or trouble.

Put Diesel in a Petrol Mercedes

Accidentally put Diesel in a Petrol Mercedes? Or possibly even put contaminated fuel in your Mercedes SL 280?

Give us a call for Help & Recommendations

Give us a call and get straightforward recommendations and sensible assistance for your specific circumstances

We come out and do a fuel drain

We can come to you to undertake the contaminated fuel retrieval & purge there on scene

All done & You Get Moving Again

When we have finished you should be able to get back on your way and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain professionals in the UK, offering national cover, for Mercedes motorists in particular. We mostly attend:

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

We are Mercedes specialists and have successfully drained thousands of Petrol Mercedes vehicles. Whether it's roadside, on a filling station forecourt, or even at your home, we are able to get you going again.

The Process

The method of getting rid of Diesel from a Petrol vehicle is in essence exactly the same for virtually all motor vehicles. Naturally it does differ a bit as every brand has their unique fuel system. Nevertheless it still generally follows the below points:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Mercedes

Vehicle Restart

Get the car up and running again

View more


Hours a Day


Days a Week





Our Partners

Just some of the few people we work with to bring you the best petrol in diesel service possible

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 queries or want assistance please Call us!
We can get you going again.

24/7 Mercedes Helpline

0333 366 0103

Our Business Office

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

Weekdays: 9am to 5pm

Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained