What Happens If You Use The Wrong Fuel In Your Vehicle?

When you drive to the gas station, you’ll see that the pumps provide a variety of fuel alternatives. You must already know which one your vehicle requires, but have you ever considered what might happen if you’ve used the wrong fuel? In the end, you’ll want to stay with the fuel you require since using anything else might have undesirable consequences.

Applying Diesel To A Gasoline Engine

A gas engine is used in the majority of personal automobiles. This implies you’ll need to utilise one of the 87, 89, or 91 pumps. If you add diesel fuel into the system, you’re going to have a lot of problems. If you fill a gas engine with diesel, the car will not start. If you just put in a few gallons of diesel before noticing your mistake, your vehicle may still operate, but this will likely run badly for a while.

The compressor of gas engines is insufficient to ignite the fuel. The petrol will just sit in the tank, causing damage to the car’s injector, pipelines, and fuel pump. If your automobile is full of diesel, do not start it. Instead, hire a dump truck to transport your vehicle to a shop where it can be fully emptied.

Mixing Gasoline In A Diesel Engine Is A Bad Idea

When you mix gasoline in a diesel engine automobile, the same thing may happen. In essence, the same concept is at work. Because a diesel engine can’t burn gasoline effectively, your car’s engine may break down after a few miles of driving, causing pistons, rods, and potentially the whole engine to collapse.

When you recognise what you’ve achieved before starting your automobile, you’ll want to avoid it in the future. You’ll need an expert technician to examine your car and cleanse the system properly. In the end, paying a professional to accomplish this is preferable than purchasing a new engine.

Using The Proper Octane Ratios

The majority of drivers shouldn’t have to be concerned about diesel. Instead, they’re probably looking at the three pumps marked 87, 89, and 91. There are minor distinctions between them, but you won’t be as concerned if you use the incorrect unleaded petrol in diesel one as you would with diesel fuel.

87 is required by the vast majority of engines. Therefore, if you set up 91 in some of those vehicles, it will still function properly.

Some automobiles, such as motorsports and antique automobiles, need 91. If you inject 87 into the systems of some of those high-performance automobiles, the engine will not fail. Your vehicle’s fuel efficiency may suffer as a result, but no major issues should arise. Finally, you should keep to the octane level advised by the manufacturer for your vehicle.

Octane And Gasoline

Most automobiles on the road operate on gasoline, which comes in a variety of levels such as ordinary, mid, and premium, each with a price difference.

The octane or Anti-Knock Index value — a regulated measure of a gasoline’s capacity to survive the severe compressing typical of specific types of engines — determines the differences between fuel classes.

Normal-grade gasoline works great in most common automobiles because they have a regular motor with a normal amount of compression.

Because certain engines have greater compression, it’s usually (but not always) advisable to use mid- or premium-grade gasoline. Greater gasoline is better suited to the tougher conditions found within higher-compression engines, such as turbocharged engines.

Deep inside every gasoline engine is a constant compressing and explosions of a combination of air and fuel. A spray of air and fuel droplets is squeezed into a narrow region near the spark plug several times per second, igniting the combination and causing an explosion within millisecond timing.

How Much Would It Cost To Repair Your Car If You Used The Wrong Fuel?

It will vary based on the type of vehicle, the motor size, and whether the car has been started.

Some recovery companies will begin by thoroughly emptying the gasoline tank to remove the tainted fuel, but further repairs may be necessary. The cost of summoning one of the AA’s gasoline recovery professionals if you’ve not started the engine is £190, according to the AA. The fees might be significantly greater if you have, particularly if you have driven the automobile. According to the RAC, a repair may cost up to £5000 in the worst-case scenario.

Is There Anything To Do To Prevent Misfuelling?

It is easy to become confused when you’re driving a new automobile or many different cars at the gas station. So here are some pointers to assist you to prevent the difficulty of using the incorrect fuel:

  1. Instead of depending on the colour of the gasoline nozzles, look for other signals before refilling.
  2. Read the triggered label properly on the pump and the fuel quality indicator.
  3. Place reminders in your car, such as with a sticker inside the gas cap.
  4. Interruptions are really not worth it, so turn off your phone and concentrate only on the pumps.
  5. You’re most likely to cause an accident if you’re in a hurry, hungry, or worried.
  6. Do you have a diesel vehicle? Buy a filler neck stopper to keep the smaller gas nozzle from fitting.


It’s worth noting at this point that driving your automobile a small distance on the wrong fuel isn’t a guarantee that crucial parts will be damaged in the manner mentioned above. Misfueling recovery professionals like Fuel Doctor believe that many motorists have driven off forecourts unaware of the hazards, only phoning for assistance once the engines stutter and halt just a few minutes down the road — with no long-term consequences.

Related Articles

Leave a Reply

Back to top button