Incorrect fuel in your Vauxhall Signum CDTI? Petrol in your Diesel Vauxhall?

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


Filling Petrol in a Diesel Vauxhall is a very common mistake to make. And its remedy will depend on a variety of factors. In the event that you would like to know what to do to sort it out then keep reading.
Listed here the most important variables to keep in mind when deciding whether or not to have a fuel drain:

  1. What level of Petrol did you put in to the Vauxhall, considering that the fuel tank capacity of your Vauxhall Signum CDTI is in most cases approximately 60 litres?
    1. Hardly any Petrol, as little as 3 litres of Petrol in a Diesel Signum CDTI will typically not necessarily be a massive problem. Experience has shown us that quantities less than 3 litres (about 5% of the overall fuel tank volume) is frequently capable of being sufficiently diluted through totally filling up the rest of the tank with the appropriate fuel.
      It's extremely unusual to come across a car having issues due to lower than 5% wrong fuel contamination. Bear in mind that it's infrequently found - definitely not impossible to find. There are a number of automobiles that will not stand any level of contamination whatsoever.
    2. Between 3 and 6 litres of Petrol in the Vauxhall (5 to 10%) is really a 50/50 situation. Our experience has proven that as many drivers get away with this as all those who break down. Any time you are figuring out whether or not to risk it and just top it up consider that it is just like wagering everything on black - you've got a 50/50 chance of it being ok.
    3. Anything more than 6 litres of Petrol in your Diesel Signum CDTI really should right away be drained out because your likelihood of driving with this amount of contamination is undoubtedly lower than one in 50 - truly huge odds.
  2. Put Petrol in a Diesel Vauxhall and drove it: Have you spotted any performance problems since putting the bad fuel in your Signum CDTI? If that's the case, have it emptied no matter the amount of Petrol or even the contamination ratio. Still running a vehicle that is already starting to suffer from the consequences of fuel contamination will probably definitely lead to more damage being caused to your fuel system parts.
  3. Would you like assurance?
    You should get it removed. No matter the contamination ratio, there is always a certain level of threat linked with operating a Diesel motor on fuel contaminated with Petrol. Possible final outcomes of driving on the incorrect fuel include the engine refusing to start, running unevenly, loss of power, wearing of the high-pressure pump, damaged or bunged injectors, and so forth. These are several of the most frequently seen Petrol in Diesel signs and symptoms, and if you recognise any of them stop and get it drained right now.

Avoid having any unqualified mechanic to try to drain your vehicle. We are Vauxhall experts and hold the certification and expertise required to make sure that you get back on the road with no hassle or worry.

Put Petrol in a Diesel Vauxhall

Inadvertently put Petrol in a Diesel Vauxhall? Or perhaps even put contaminated fuel in your Vauxhall Signum CDTI?

Give us a call for Assistance & Recommendations

Contact us and receive genuine recommendations and practical help for your exact circumstance

We come out and do a fuel drain

We are able to go to you to carry out the complete contaminated fuel drain & cleanse there on scene

Once done You Get Moving Again

Once we have finished you are able to get back moving 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 Vauxhall motorists in particular. We mostly attend:

  • Unleaded petrol in Diesel Auto
  • Diesel in an Unleaded Petrol Auto
  • AdBlue fuel contamination
  • Water contamination

We are Vauxhall specialists and have successfully drained thousands of Diesel Vauxhall vehicles. No matter if it is roadside, on a filling station forecourt, or even at your house, we are able to get you on the road again.

The Process

The process of getting rid of Petrol from a Diesel vehicle is fundamentally identical for the vast majority of vehicles. As you can imagine it can vary to some degree as every make has their unique fuel system. Nevertheless it still fundamentally follows the below principles:

Petrol in Diesel Vauxhall

Fuel Drain

Empty the Fuel Tank

View more
Wrong Fuel Drain Vauxhall

System Flush

Clean out the fuel lines & pumps

View more
Petrol in Diesel Drain Vauxhall

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 Questions

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

In case you have any concerns or require our help please Call us!
We are able to get you on the road once again.

24/7 Vauxhall 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