Contaminated fuel in a Subaru Forester 2.0D? Petrol in your Diesel Subaru?

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


Filling Petrol in a Diesel Subaru is a well-known mistake. And its solution depends on various things. In case you want to know what you need to do to sort it out then please read on.
Here are the key factors to take into account when determining whether to have a fuel drain:

  1. What level of Petrol did you put in the Subaru, keeping in mind that the fuel tank capacity of your Subaru Forester 2.0D is most likely approximately 64 litres?
    1. A tiny quantity of Petrol, as little as 3.2 litres of Petrol in a Diesel Forester 2.0D will in most cases not be a massive problem. Experience has proven to us that an amount less than 3.2 litres (which is roughly 5% of the fuel tank volume) is oftentimes capable of being completely diluted through wholly filling up the rest of the tank with Diesel.
      It is very unusual to encounter an automobile suffering from issues with under 5% wrong fuel contamination. Be aware that it's infrequent - definitely not impossible to encounter. You can get a few vehicles that won't stand any quantity of contamination at all.
    2. Somewhere between 3.2 and 6.4 litres of Petrol in the Subaru (5 to 10%) is really a 50/50 scenario. Our practical experience has confirmed that as many motorists get away with it as those who break down. Any time you are trying to decide whether to risk it and just simply top it up consider that it is very much like gambling it all on black - you will have a 50/50 chance of it being ok.
    3. Anything above 6.4 litres of Petrol in a Diesel Forester 2.0D should really straight away be removed seeing as your probability of succeeding with this level of contamination is more than likely less than one in 50 - genuinely huge odds.
  2. Put some Petrol in a Diesel Subaru and drove it: Have you noticed any performance troubles ever since putting the bad fuel in the Forester 2.0D? If you have, get it removed regardless of the quantity of Petrol or even the contamination ratio. Continually running an automobile that is already starting to suffer the effects of wrong fuel contamination can typically result in more harm affecting the fuel system parts.
  3. Are you interested in peace of mind?
    In that case get it drained. No matter the contamination ratio, there is inevitably some amount of danger resulting from operating a Diesel motor on Diesel contaminated with the incorrect fuel. Possible consequences of driving a vehicle on the wrong fuel can include the engine not starting, running unevenly, loss of power, wearing of the high-pressure pump, worn or bunged injectors, and the like. These are a few of the most frequently seen Petrol in Diesel signs or symptoms, and should you observe any of them then stop driving and get it drained asap.

Keep away from having any jack-of-all-trades to try to repair your vehicle. We are Subaru specialists and possess the credentials and working experience needed to ensure you get back on the road with no hassle or trouble.

Put Petrol in a Diesel Subaru

Inadvertently put Petrol in a Diesel Subaru? Or perhaps even put contaminated fuel in your Subaru Forester 2.0D?

Contact us for Assistance & Recommendations

Call us and get sincere guidance and practical assistance for your exact situation

We arrive and drain it

We are able to come to you to do the fuel drain & clean right there on scene

All done & You Get Going Again

Once we are done you can get back on the road and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain specialists in the UK, having national coverage, for Subaru motorists particularly. We mainly fix:

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

We are Subaru specialists and have successfully drained hundreds of Diesel Subaru vehicles. Whether or not it is roadside, on a filling station forecourt, or even at your home, we can get you moving again.

The Procedure

The system of extracting Petrol from a Diesel vehicle is basically similar for virtually all vehicles. As you can imagine it does differ somewhat as every manufacturer has their unique fuel system. Nevertheless it still follows the below points:

Petrol in Diesel Subaru

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Subaru

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Subaru

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

Petrol in Diesel FAQs

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

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

If you have any concerns or want help please Call us!
We are able to get you on the road once again.

24/7 Subaru 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