Fuel Swap: Things To Do When You Poured Wrong Fuel In Your Engine

Fuel swap is a common error in your vehicle, usually putting petrol in diesel engine or vice versa. It’s also possible to prevent this error from losing thousands of dollars if you take the right actions immediately.

Refuelling your vehicle is a process that is generally crammed in among more critical tasks. When you arrive at the servo, you’ll see four or five pipes, but if your attention wanders, you can discover that the wrong gasoline has ended up in your car’s tank. Such minor errors can have serious consequences. Therefore, it’s essential to know what to do about it.

Putting Petrol In Diesel Engine

It is mainly the case in dual-cab pickup trucks equipped with large filling neck entrances for high diesel hoses. Due to strict standards integrated into the engine fuel design, prevalent contemporary fuel cannot accept even a trace of petrol. Diesel fuel nozzles are maintained and operate under high pressure. The gasoline application to diesel reduces its flowability, leading to fuel pressure breakdown of the metal particles in the fuel lines.

Because of the higher pressure, pre-ignition, explosion, or malfunction might trigger severe engine problems. If you notice your mistake before departing the filling station, don’t even start your automobile as this could contaminate the fuel. Call someone available to help with fuel emptying, maintenance, and refilling. Attempting to operate the automobile might result in penalties of hundreds of dollars. Stop driving off upon restarting your car and discovering your mistake. Squishing gasoline from the tank isn’t advised because you may not have all of the fuel off, threatening your safety or the surroundings.

Tips To Do When You Put The Wrong Fuel In Your Car

Do not even freak out if you put the incorrect gasoline in your vehicle. Instead, do the following simple guidelines:

  • Do not start the machine; instead, contact assistance to arrange a means of transport to your nearest repair.
  • If you’ve already started or driven the automobile, come to a secure halt and switch off the vehicle as quickly as possible.
  • Using gasoline in a diesel vehicle might result in catastrophic mechanical issues unprotected under insurance.

Using The Wrong Type Of Petrol

Using the wrong type of fuel in a car engine has minor repercussions. Loading up with high-rated fuels such as 95 and 98 RON in cars that only require ordinary unleaded fuel would only hurt your wallet at the station. Several people advise having a single barrel of premiums in vehicles that operate on ordinary ULP, although the advantages to the car or fuel consumption are questionable.

What If Your Vehicle Requires Premium ULP And It’s Unavailable?

Even though these engines can generally operate on standard ULP with minor decreases in power and efficiency, it’s advisable to replace them with premium ULP as quickly as possible. Vehicles that require 98RON solely must be consulted with the company’s manual since the danger of engine problems is higher. In this instance, emptying the tanks and replacing them with good quality is the safest method. A danger to your automobile caused by the fuel swap error is not insured by warranty, and your auto insurance policy may well not reimburse the error.

How To Prevent Fuel Swap Error

Mixing petrol and diesel fuel was not the end of the world as long as you discovered your mistake at the station. You’ll go through the trouble and cost of having your gasoline tank drained and repaired. However, the actual harm may occur after you’ve turned away. Here are some tips to prevent the possible danger you and your engine might encounter.

Learn your vehicle.

Diesel cars can only run on diesel. Examine your boss’s handbook for the required octane rating for gasoline vehicles, and ensure that your fuel meets or surpasses that value. Typically, the regular fuel does have an octane rating of 87, the premium has an octane rating of 91 or 93, while plus is in the middle. Premium-fuel-required vehicles may additionally designate an octane choice on the gas cap. (Some automobiles may merely “suggest” a fuel.)

Consider setting up a misfuelling control system.

You may buy a diesel fuel tank adaptor that will not accept different gas nozzles. Several automakers have begun to standardise installing a similar device in all diesel vehicles.

Keep an eye on the nozzle.

Lower the number of distractions at the gas stations. Evaluate each valve and hose carefully to verify you understand the fuel type you’ve chosen to avoid fuel swap mistakes.


Several gas stations have distinct nozzles for petrol and diesel, and some producers are taking precautions to avoid fuel swap issues. Other automobiles have several fuel nozzle holes to accommodate different nozzles. However, not everyone has acclimated to this method, so you need to be watchful.

Being attentive is the most excellent means of preventing this costly yet simple mistake. Indicate the kind of fuel you want to have in your automobile. Station workers are instructed to inform you of the type of gasoline being filled, allowing you to rectify the worker. Watch the hose being placed into the gasoline tank to ensure. 


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