Wrong fuel in your Subaru Outback? Diesel in your Petrol Subaru?

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


Putting Diesel in a Petrol Subaru is a fairly typical problem. And its remedy is dependent upon several things. Assuming you would like to find out what it is advisable to do to sort it out then read on.
Listed here the main variables to to consider when deciding on whether or not to get a fuel drain:

  1. What amount of Diesel have you put in the Subaru, bearing in mind that the fuel capacity of your Subaru Outback is probably around 64 litres?
    1. A modest amount of Diesel, something like 3.2 litres of Diesel in a Petrol Outback will more often than not not be a significant problem. Experience has proven to us that an amount less than 3.2 litres (close to 5% of the overall fuel tank volume) is very often able to be adequately diluted simply by wholly topping the remainder of the tank with the right fuel.
      It is pretty unusual to encounter an automobile experiencing difficulties with less than 5% wrong fuel contamination. Keep in mind it's infrequent - definitely not impossible to find. There are actually certain vehicles that won't endure any amount of fuel contamination in the slightest.
    2. Anywhere between 3.2 and 6.4 litres of Diesel in the Subaru (from 5 to 10%) is more of a 50/50 scenario. Our working experience demonstrates that as many motorists get away with it as those people who break down. When you are deciding upon whether or not to chance it and simply fill it up remember that it is exactly like gambling it all on black - you have a 50/50 possibility of it working out.
    3. Anything more than 6.4 litres of Diesel in your Petrol Outback should really straight away be removed as your likelihood of getting away with that level of contamination is in all likelihood less than one in 50 - truly long odds.
  2. Put some Diesel in a Petrol Subaru and drove it: Have you noticed any kind of performance concerns since putting the bad fuel in the Outback? If you have, have it drained irrespective of the amount of Diesel or even the contamination ratio. Continuing to run driving an automobile that is already beginning to suffer from the effects of wrong fuel contamination will probably only result in more damage affecting your fuel system parts.
  3. Are you looking for assurance?
    You should get it drained. Regardless of the contamination percentage, there is invariably some degree of danger linked with driving a Petrol motor on fuel contaminated with Diesel. Possible implications of driving a car on the incorrect fuel can include the motor not starting, running lumpy, reduced power, degradation of the high-pressure pump, worn out or clogged injectors, and the like. These are some of the commonest Diesel in Petrol warning signs, and in the event that you notice any of them stop and have it drained right away.

Stay away from having any unqualified mechanic to attend your vehicle. We are Subaru specialists and have got the qualifications and expertise required to ensure that you get back on the road with little hassle or worry.

Put Diesel in a Petrol Subaru

Accidentally put Diesel in a Petrol Subaru? Or possibly even put contaminated fuel in your Subaru Outback?

Call us for Assistance & Recommendations

Contact us and receive sincere advice and sensible assistance for your particular circumstances

We show up and drain it

We are able to come to you to carry out the complete fuel removal & flush right there on scene

All done & You Get Going Once again

As soon as we are done you are able to get back on the road and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, boasting nationwide coverage, for Subaru motorists particularly. We principally attend:

  • Unleaded petrol in Diesel Car
  • Diesel in your Unleaded Petrol Auto
  • AdBlue contamination
  • Water contamination

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

The Procedure

The method of draining Diesel from a Petrol car is in essence similar for a large number of vehicle makes. Naturally it does vary a bit as every brand has their own fuel system. Nevertheless it still generally follows the following guidelines:

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

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.

Get in Touch

Should you have any concerns or need our assistance please Contact Us!
We can get you moving again.

24/7 Subaru Helpline

0333 366 0103

Our Corporate Office

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


Important Info

Fully Insured

VAT Registered

APEX Certified


Fully Mobile

Professionally Trained