Contaminated fuel in your Porsche Cayman? Diesel in a Petrol Porsche?

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Porsche Fuel Drain


Filling up with Diesel in a Petrol Porsche is a very common error. And its remedy will depend on an assortment of things. Assuming you want to find out what it is advisable to do about this then please read on.
Listed below are the key factors to consider when deciding whether or not to get the car drained:

  1. How much Diesel did you put into the Porsche, considering that the fuel capacity of your Porsche Cayman is most likely roughly 64 litres?
    1. A small amount of Diesel, something like 3.2 litres of Diesel in a Petrol Cayman will generally not be a huge problem. Experience has proven to us that an amount less than 3.2 litres (approximately 5% of the total fuel tank) is oftentimes able to be adequately diluted by means of entirely topping the remainder of the tank with Petrol.
      It is rather rare to encounter an automobile having issues because of lower than 5% incorrect fuel contamination. Bear in mind that it is rare - certainly not impossible to encounter. There are some cars that don't endure any quantity of contamination at all.
    2. Somewhere between 3.2 and 6.4 litres of Diesel in the Porsche (from 5 to 10%) is a 50/50 condition. Our working experience has shown us that as many drivers get away with it as those who break down. When you are deciding upon whether to risk it and simply top it up bear in mind that it is very much like gambling it all on black - you have got a 50/50 chance of it working.
    3. Anything over 6.4 litres of Diesel in a Petrol Cayman really should immediately be drained as your probability of getting away with that quantity of contamination is certainly less than one in fifty - truly huge odds.
  2. Put Diesel in a Petrol Porsche and drove it: Have you observed any performance issues as a result of putting the incorrect fuel in your Cayman? If you have, get it drained irrespective of the quantity of Diesel or the contamination ratio. Proceeding to drive running a vehicle that is already starting to suffer from the effect of wrong fuel contamination will probably just lead to more damage affecting your fuel system.
  3. Do you want peace of mind?
    You should get it removed. Whatever the contamination ratio, there is inevitably some extent of threat in connection with driving a Petrol motor on Petrol contaminated with the incorrect fuel. Probable outcomes of driving a vehicle on the incorrect fuel normally include the motor not starting, running unevenly, loss of power, degradation of the high-pressure pump, worn out or clogged injectors, and so on. These are several of the commonest Diesel in Petrol signs or symptoms, and should you recognise any of them then stop and have it removed right away.

Do not just have any jack-of-all-trades to attend your vehicle. We are Porsche specialists and have got the accreditation and working experience necessary to ensure that you get back on the road with minimum hassle or worry.

Put Diesel in a Petrol Porsche

Inadvertently put Diesel in a Petrol Porsche? Or possibly even put contaminated fuel in your Porsche Cayman?

Give us a call for Assistance & Advice

Call us and obtain reliable guidance and practical help for your precise circumstance

We come out and drain it

We are able to come to you to undertake the full fuel retrieval & clean there on scene

All done & You Get Moving Again

Once we have completed you are able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, boasting nationwide service, for Porsche motorists especially. We principally fix:

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

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

The Process

The procedure of extracting Diesel from a Petrol vehicle is essentially similar for the majority of vehicle makes. Of course it may vary slightly as each brand has their unique distinct fuel system. Even so it still generally adheres to the below points:

Petrol in Diesel Porsche

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Porsche

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Porsche

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 need assistance please Call us!
We can get you going again.

24 hour Porsche Helpline

0333 366 0103

Our Corporate Office

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

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