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What Happens If You Put Too Much Oil in Your Car: Here is the Answer

Engine oil is meant to provide the needed lubrication for all mechanical parts within the engine. What happens if you put too much oil in your car?

Is the over amount of the oil going to damage the engine of the vehicle?

Does putting an excessive amount of oil in the car do any good regarding the engine’s performance?

First, putting too much or too little oil in your car is bad for engine performance. Although the car cannot perform without lubricants but putting too much oil is also a disaster.

The damage of excessive oil will be the same as the low levels of the oils and fluids. What actually happens if you provide too much oil in your car?

The answer is simple: you will end up with some malfunctioning parts that will cost you a handsome amount of money for the repair.

That is why it is highly recommended to avoid the overfilling of the oil and ensure that oil is refilled to the right levels as per the company’s recommendations.

In this article, we are going to explore what happens if you put too much oil in Car. We are also going to talk about the precautions of putting oil in your car.

What Happens If You Put Too Much Oil in Your Car

Mechanical components in the car move rapidly and produce an insane amount of heat. If there is no oil in the engine or you have put too much oil, the heat flow will be interrupted.

With too much oil in the engine, not much space is left for the heat sink, and the excessive oil starts pressurizing the different components of the engine that may malfunction due to increased pressure.

1. Reduced Lubrication Between Parts

Excessive oil can reduce the reach of the lubricant in the engine. Yes, overfilling does the same damage as the low level of oil.

When there is not enough space left for the free movement of the oil, rapid movement of the parts creates a foam-like fluid that limits the lubrication between different parts.

If all parts are not effectively lubricated, the engine will start overheating.

2. Failing Gaskets and Seals

As the parts ship the oil, the air is included in the air-tight compartments, and the pressure on the seals starts increasing.

Seals and the gaskets are designed to hold the specific pressure levels, and the pressure start building inside the engine, the seals, fail to hold the oil and start leaking.

3. Spark Plug Fouling

The foul spark plugs generally cause lags in the engine performance. When the oil comes in contact with the spark plugs, the oil coating will start interrupting the current flow.

As well as, the combustion process will not transmit enough power for the car’s efficient performance.

4. Clogged Catalytic Converters

Overfilling will surely interrupt the gas cleaning capacity of the catalytic converters. If the catalytic converter is not cleaned, high-temperature gases may even initiate the fire.

Clean catalytic converters are needed to reduce the toxicity of the gases transmitted to the exhaust.

Symptoms of Oil Overfilling: Behind the Scene, You Need to Know About

There are specific symptoms that indicate that you have put too much oil in your car. If not taken care of, oil overfilling can lead to severe damage, as discussed above.

Once you have detected any of these symptoms, park your car on a plain surface and let the engine oil cool down for 10-15 minutes.

Never open the oil gauge right after stopping the car because the oil will be too hot and will build intense pressure in the engine.

You can check the dipstick of the engine to check the engine oil level. In the ideal situation, the engine oil level must be between the empty and full marks.

If the level of the oil has reached up to the full mark, you have put too much oil into the car.

You can remove the excess oil through the oil outlet or have the mechanic do it for you. Here are some common symptoms of oil overfilling:

  • Recently changed the engine oil
  • Blue or white smoke
  • The burning smell after continued drive
  • Leaking oil
  • Warning light for high engine oil pressure
  • Misfires and lags
  • Engine overheating
  • Rough drive and slower acceleration

All symptoms may not be visible if you have put too much oil in your car. Most of the time, there are only a few symptoms that you are going to detect.

After replacing the engine oil, it is a good idea to check the level of the oil after driving a few hundred miles.

Cautions During Putting Oil in Your Car: The Safety Measures

There are specific guidelines given by the car manufacturer about the exact amount of oil required and the right grade of the oil.

The precise amount of engine oil required for your car depends upon the engine capacity of the car.

Cars with higher CC engines require more engine oil. Here are some precautions during putting oil in your car:

  • Check the Exact Amount of Oil for your Car

Almost all cards of the same engine and CC require the same amount of engine oil. You can easily find the recommended amount of oil for your car.

Only fill the car with the engine oil as per the company’s recommendations.

  • Check the Oil Grade

There are different engine oils available in the market with different grades. The grade defines the thickness and other chemical properties of the oil.

With the age of the engine, you may have to change the engine oil. Stick to one engine oil grade as changing the grade again and again will decrease the engine performance.

  • Remove the Excessive Oil

Once the oil overfilling has been detected, you can easily remove the extra oil.

It would be best if you didn’t wait or delay removing the extra oil as a mishap can hit your car anytime.

You can suck the extra oil through the dipstick tube or remove the extra oil from the oil outlet in the pan.

  • Keep Checking the Engine Oil Level

The best way to avoid any possible danger due to engine oil is to replace the oil once you drive the car to the said period of distance. Keep checking the engine oil level after some time.

Even you don’t need to wait for 3,000 KMs or any other attribute if the engine oil level is too high or low.

Go for an immediate oil change if the oil level is not in the right position.


Is too much oil bad for the car engine? Yes, putting too much oil will do serious damage to the car.

Extra oil can overheating issues and may break down the mechanical parts and the seals of the engine.

All you have to do is to follow the guidelines about filling the right amount of engine oil, and your car is safe from several threats and possible issues.

Stick to the exact amount of engine oil and the right oil grade for your car.

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