I Accidentally Put Premium Gas In My Car: What Happens Now?

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If you’ve accidentally put premium gas in your regular car, don’t worry – it’s not the end of the world. You can immediately take steps to minimize the damage.

First, if you have only put a small amount of premium gas in your car, try diluting it with regular unleaded gasoline. This will help to prevent any damage to your car’s engine. After siphoning out as much premium fuel as possible, fill your gas tank with regular gasoline. And finally, take your car to a mechanic for a tune-up.

gas types for cars

If you still have any doubts, here is a detailed discussion of the possible damage and the different fuel types. Without further ado, let’s get started!

What Happens If You Put the Wrong Gas?

If you’ve ever put the wrong kind of gasoline in your car, you know it can be a real pain. Your car may run for a little while, but eventually, it will start to sputter and die. Putting diesel in a gasoline car is even worse – the engine will run for a few seconds and then shut off. So what’s the big deal with putting the wrong gas in your car?

Diesel 

It all has to do with the way engines work. Gasoline and diesel are two different fuel types, and they’re not interchangeable. Gasoline is a mixture of hydrocarbons – molecules made of hydrogen and carbon. On the other hand, Diesel is a heavier fuel made up of more significant hydrocarbons.

When you put gasoline in a diesel engine, the smaller hydrocarbon molecules don’t mix well with the larger ones. They can cause the engine to “lock up” – the pistons can seize and stop moving. That’s why it’s so important to make sure you’re using the right fuel for your car.

Premium 

If you have a newer car with a turbocharged engine, it’s essential to know that premium gas has a higher octane rating and can damage your engine. If you’re not sure what kind of engine your car has, it’s always best to err on caution and use regular gas.

Secondly, even if your car can handle premium gas, you might notice a decrease in fuel economy. It is because premium gas is more expensive per gallon, so you’ll spend more money at the pump in the long run.

Symptoms of Wrong Fuel In Car

Here are the common symptoms that you can observe after putting the wrong fuel in the car:

Engine Stalling

The engine will likely stall if you put the wrong fuel in your car. It is because the wrong fuel can cause the engine to misfire, leading to stalling. 

If your engine stalls after putting the wrong fuel in it, you should not try to restart it. Instead, you should call for help so that a tow truck can take your car to a nearby service station where the fuel can be drained and replaced with the correct fuel.

Car Not Starting

Another symptom of putting the wrong fuel in your car is that it may not start at all. This is because the wrong fuel can clog up the engine and prevent it from starting. If your car does not start after putting the wrong fuel in it, you should call for a tow truck to take it to a nearby service station.

Rough Idling

If you put the wrong fuel in your car, the engine will likely idle roughly. This is because the wrong fuel can cause the engine to misfire, leading to rough idling. 

Poor Performance

If you’ve put the wrong fuel in your car, the car’s performance will likely suffer. You might notice that the car doesn’t accelerate as quickly as it should or that the engine runs rough.

Strange Noises From The Engine

Another common symptom of wrong fuel is strange noises coming from the engine. These noises can range from a knocking sound to a high-pitched whine and are usually a result of the wrong fuel damaging the engine.

Will My Insurance Cover Gasoline Removal Cost?

If you have a spill or leak of gasoline, you will likely be wondering if your insurance will cover the cost of removing the fuel. The answer to this question depends on a few factors, including the type and amount of coverage you have and the cause of the spill.

For example, if you have comprehensive coverage, your insurer will likely cover the cost of removing the gasoline, as long as it is not due to negligence on your part. However, if you only have liability coverage, your insurer will only pay for the cleanup if someone else’s negligence caused the spill.

It is important to note that even if your insurance does cover the cost of removing the gasoline, you may still be responsible for any damages resulting from the spill. For this reason, it is always best to clean up a spill as soon as possible to minimize the chances of further damage.

What Are The Types Of Gas For Cars?

gas types
Different gas pumps

There are different types of gas for cars, and each type has its benefits and drawbacks. The most common fuel types are regular gasoline, premium gasoline, diesel fuel, and E85 (flex fuel). Here’s a closer look at each type of gas:

Regular Gasoline

Regular gasoline is the most common type of fuel used in cars. It’s affordable and works well in most vehicles. However, regular gasoline can have lower octane levels, leading to engine knock.

Premium Gasoline

Premium gasoline has a higher octane level than regular gasoline, which helps to prevent engine knock. However, premium gasoline is usually more expensive than regular gasoline.

Diesel fuel 

Diesel fuel is a type of fuel that’s commonly used in trucks and other heavy-duty vehicles. Diesel fuel is more efficient than gasoline, but it can be more expensive.

E85 (Flex-Fuel) 

E85 is a type of fuel that you can use in cars equipped with flex-fuel engines. Flex-fuel vehicles can run on either gasoline or E85. E85 is usually less expensive than gasoline, but it can have a lower fuel economy.

E15 (Ethanol Blend) 

E15 is a type of fuel that contains a blend of ethanol and gasoline. E15 is typically less expensive than gasoline, but it can have a lower fuel economy.

Check Out What is the BEST Fuel to Use in Your Car or Truck and WHY:

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Why is Premium Fuel Different from Regular Gas? 

The benefits of premium fuel over regular gas depend upon your vehicle type. If it is designed to withstand premium fuel, it can improve your car’s performance and efficiency. While for regular vehicles, it can cause damage. Here’s a detailed comparison of premium and regular gasoline to make the best decision for your car.

Mileage

Regular gas typically has 87 octanes, while premium gas is usually 91 or higher. That higher octane rating means that premium gas can withstand more compression before detonating. But both of these fuel types don’t really affect the mileage of your car.

Engine Performance

You might also notice a reduction in the engine economy of regular vehicles when you switch to premium fuel. That’s because higher-octane gasoline can provide a consistent burn in your engine. That can lead to quicker acceleration and damage the fuel economy even in premium vehicles.

Horsepower

If you’re looking to get the most out of your engine, premium gas can boost horsepower. Higher-octane fuel can resist pre-ignition and “knocking” better than regular gas. That means that your engine will be able to run at higher speeds without damaging itself, leading to more power and better performance. Some modern car requires premium gas to run smoothly.

Lifespan

Using premium gas in your premium car can also help extend its lifespan. Higher-octane fuel leaves fewer deposits on engine parts, leading to less wear and tear over time. So if you’re looking to keep your car running like new for as long as possible, premium gas is the way to go.

Key Takeaway: Gasoline can start to go bad due to a number of factors, including the age of the fuel and exposure to air. The lighter elements in gasoline, such as propane and butane, will start to evaporate over time. This results in a loss of octane and can lead to engine knocking. In severe cases, the fuel can start to form gum and varnish deposits that can clog up fuel lines and carburetors.

FAQs

Can You Mix 87 and 93 Gas Grades?

Yes, you can mix 87 and 93-octane gasoline. There is no need to worry about damaging your engine or voiding your warranty if you use a lower octane gas than what is recommended. However, using a higher octane gas will not improve your engine’s performance or fuel economy. So, save your money and use the lower-octane gas.

What is unleaded gasoline?

Unleaded gas is a type of gasoline that does not contain lead. Lead was once added to gasoline to improve engine performance, but it has since been phased out due to the health risks. Unleaded gas is now the standard in most parts of the world.

Lead can cause several health problems, including brain damage if inhaled or ingested. It is also an environmental pollutant, so removing it from gasoline has helped to improve air quality. Unleaded gas typically contains a higher octane rating than leaded gas, which can help improve engine performance.

Can I Fill unleaded gas in My Car?

If you have a car that runs on unleaded gas, you may be wondering if you can put unleaded gas in your vehicle. The answer is yes; you can put unleaded gas in your car. However, there are a few things to keep in mind.

– First, unleaded gas has a lower octane rating than regular gas. This means that it may not perform as well in your car. If you notice any difference in performance, you may want to switch back to regular gas.
– Second, unleaded gas can be more expensive than regular gas. If you’re on a budget, you may want to stick with regular gas.
– Third, unleaded gas can be harder to find than regular gas. If you’re having trouble finding it, you may want to try a different gas
station.
– Fourth, unleaded gas can sometimes cause engine knocks. You may want to switch back to regular gas if you notice this.

What kind of gas can my car use?

There are a few different types of gasoline that you can use in your car, and the type that you use will depend on the make and model of your vehicle. The most common types of gasoline are 87 octane, 89 octane, and 91 octane. If you’re unsure about which type of gas to use in your car, consult your owner’s manual or ask a qualified mechanic.

Will a diesel engine be hurt by a little gas?

No, a little gas will not hurt a diesel engine. In fact, many people use a mixture of gasoline and diesel fuel to power their vehicles. However, it is essential to note that using too much gas can damage the engine. Therefore, it is best to use the recommended fuel mixture for your vehicle. 

Can You Fill Up A Honda Civic With Premium Gas?

Yes, you can put premium gas in a Honda Civic. However, it is unnecessary and will not improve the car’s performance. If you choose to use premium gas, ensure that your car’s engine is designed to handle it. Otherwise, you could damage the engine. 

Final Consideration

So, now you know what to do after accidentally putting premium gas in your car. The first thing you need to do is check your car’s credibility regarding premium fuel. And if your car doesn’t withstand premium fuel, make sure you take the necessary steps to minimize the damage and get back on the road as quickly as possible.

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Matt's life has been driven by his great love for cars, from the revving sounds of his childhood to the digital tracks of Gran Turismo. He is a big fan of cars and loves to learn about their inner workings and share his knowledge with other car fans. Even though he doesn't have ASE certifications, he works on cars all the time, so he's always up to date on the latest innovations and trends. Matt doesn't just want to write; he also wants to connect with other people who love cars as much as he does.