Bad fuel in a Cadillac STS? Diesel in your Petrol Cadillac?

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Cadillac Fuel Drain


Putting Diesel in a Petrol Cadillac is a fairly typical mistake. And exactly what you need to do about it depends on several things. In case you would like to find out what you need to do to fix it then keep on reading.
Listed below are the most crucial factors to to consider whenever deciding on whether or not to have it drained:

  1. What level of Diesel have you put in the Cadillac, taking into account that the fuel capacity of your Cadillac STS is usually approximately 66 litres?
    1. A small amount of Diesel, something like 3.3 litres of Diesel in a Petrol STS will generally not necessarily be a big problem. Experience has shown us that anything less than 3.3 litres (roughly 5% of the whole fuel tank) is often able to be sufficiently diluted through thoroughly topping the remainder of the tank with Petrol.
      It is highly unusual to find a motor vehicle experiencing difficulties with below 5% wrong fuel contamination. Please remember it is very uncommon - in no way impossible to encounter. You will discover certain motor vehicles that will not endure any degree of fuel contamination whatsoever.
    2. Between 3.3 and 6.6 litres of Diesel in the Cadillac (from 5 to 10%) is a 50/50 scenario. Our working experience has demonstrated that as many people get away with this as all those who break down. Whenever figuring out whether or not to chance it and just simply top it up recognise that it is exactly like gambling all of it on black - you have a 50/50 chance of it working.
    3. Anything over 6.6 litres of Diesel in a Petrol STS should really right away be drained out because your likelihood of driving with that amount of contamination is probably lower than one in 50 - definitely long odds.
  2. Put some Diesel in a Petrol Cadillac and drove it: Have you noticed any kind of performance concerns since putting the incorrect fuel in your STS? In that case, get it removed no matter the amount of Diesel or even the contamination ratio. Proceeding to run driving a car that is beginning to suffer the consequences of fuel contamination will probably typically end up in more and more harm being caused to the fuel system parts.
  3. Do you want security?
    Then simply just get it emptied. No matter the contamination ratio, there is invariably some amount of danger connected to operating a Petrol motor on Petrol contaminated with the incorrect fuel. Probable final outcomes of driving on the incorrect fuel normally include the motor refusing to start, running lumpy, losing power, degradation of the high-pressure pump, damaged or blocked injectors, and so on. These are some of the most typical Diesel in Petrol symptoms, and should you notice any of them then stop driving and get it drained as soon as possible.

Do not simply get any untrained so-and-so to try to fix your vehicle. We are Cadillac experts and hold the accreditation and experience needed to ensure that you get back on the road with no hassle or trouble.

Put Diesel in a Petrol Cadillac

Unintentionally put Diesel in a Petrol Cadillac? Or even put contaminated fuel in your Cadillac STS?

Give us a call for Assistance & Guidance

Call us and obtain honest recommendations and sensible assistance for your particular circumstance

We show up and do the fuel drain

We would come to you to carry out the fuel retrieval & clean there on scene

Once completed You Get Going Again

Once we are done you should be able to get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain authorities in the UK, boasting countrywide coverage, for Cadillac motorists especially. We principally attend:

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

We are Cadillac specialists and have successfully drained thousands of Petrol Cadillac vehicles. No matter if it is at the roadside, on a station forecourt, or even at home, we can get you moving again.

The Process

The procedure of removing Diesel from a Petrol vehicle is generally exactly the same for the majority of vehicle makes. Naturally it may vary somewhat as every brand has their particular distinct fuel system. However it still observes the below principles:

Petrol in Diesel Cadillac

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Cadillac

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Cadillac

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.

Call us

In case you have any queries or need our assistance please Call us!
We are able to get you on the road again.

24 hour Cadillac Helpline

0333 366 0103

Our Corporate Office

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

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