Different smoke colors from the exhaust are a sign of different problems in your car. If you are finding white smoke from the exhaust after an oil change, and looking for the reasons behind it and the way to fix it, then we have got you covered under this article.

Possible Reasons For White Smoke After an Oil Change:

If you have just changed your vehicle’s engine oil and are witnessing white smoke this could be due to a few reasons:

  1. Wrong Viscosity Oil     
  2. Excessive oil in the sump after an oil change 
  3. Cracked oil cylinders    
  4. Coolant leaking into the combustion chamber

What is causing white smoke in my vehicle after an oil change?

1. Using Wrong Viscosity Oil Is A Cause Of White Smoke emission

Credits: MahineryLubrication.com

Using oil of the wrong viscosity can cause many problems in your vehicle, one of them being the white smoke emission after you change the oil.  Using the wrong viscosity oil may cause white smoke to emit from your exhaust after you do an oil change.

This should not stay for too long once you start the car after an oil change. Wrong viscosity oil temporarily causes white smoke but if it continues to stay longer, you need to check the oil dipstick for excessive oil in your car’s engine.

2. Filling excessive oil is a cause of white smoke or in some cases bluish white smoke:

If you have recently filled or topped up your car with engine oil there would be a high possibility of it being excessively filled or overflowed due to air pressure.  Excessive oil in the oil sump does not flow back out of the vehicle.

Excessive Engine Oil
Credits: GrimmerMotors

Because of this, the oil may start burning as you turn your vehicle on and you may witness white or bluish-white smoke coming out of your car. In some cases, the smoke color could even be tinted blue. If this is the case, immediately turn your car’s engine off to avoid any further damage.

Similar Articles: Does Engine Oil Evaporate?

If you don’t believe us, just check out this video below with the exact same issue. The smoke coming out of the vehicle is because of overfilling the engine oil.

3. Cracked Vehicle Cylinders:

Cracked Vehicle Cylinders
Credits: Quora

A crack in your vehicle’s cylinders is also a cause of white smoke after an oil change. If your car’s cylinders are cracked, the oil will find its way into the engine’s cylinders and as the oil enters the engine’s cylinders the exhaust may start passing out white smoke.

4. Leaked valve or seal

A valve or the seal in the engine ensures that oil does not unnecessarily flow through the different parts of the engine and protects them from being damaged. If the valve is leaked oil will start flowing to the combustion chamber where it might mix with the fuel and air and this reaction causes dense white smoke from the exhaust.

5. Coolant Leaking in the combustion chamber

Coolant leaking is a serious problem that needs to be resolved as soon as you get to know about it. Now how will you know that white smoke is because of coolant leaking in the combustion chamber?

Coolant Leaking

If the white smoke coming out of the vehicle does not stop after enough time for the engine to warm up, this is a preliminary sign of a coolant leak. Along with this if this white smoke is leaving behind a sweet or fruity smell in the air while disappearing, then this is surely a sign of coolant leakage in your vehicle. A coolant is another fluid that is used in the engine oil cooler of your vehicle.

If the coolant is getting leaked it will find its way to mix with the engine oil and as soon as it mixes with the engine oil it will start producing white smoke because of the presence in the combustion chamber. Ignoring this can cause heavy damage to your vehicle as the head gasket will fail and as a result, your vehicle will start overheating and the engine might wear out causing heavy damage to your vehicle.

Now that you have read what are the possible causes of white smoke after an oil change, let’s see how to fix this.

How to stop white smoke after an oil change?

You might have noticed white smoke coming from your vehicle’s exhaust or tailpipe after an oil change and might be wondering how to fix it. Well in that case you first need to diagnose the problem and find out what’s causing white smoke from the exhaust in your vehicle from the causes that we have listed above.

Let’s have a look at the ways by which you can fix white smoke coming out of the exhaust after an oil change.

  • As mentioned above using the wrong viscosity oil might cause white smoke to come out of the exhaust. If you are using oil that is not recommended for your car, then you need to refer to your owner’s manual and purchase the oil which is mentioned in that to fix this.
  • Fix the damaged cylinders: Damaged or cracked cylinders are often a major cause of white smoke, if you find out that your vehicle’s cylinder head is cracked or damaged, we recommend you to either reach out to a mechanic and get it repaired if possible or get the cylinders changed if the crack or damage is more.
  • Fix oil leakage: while diagnosing the reason behind white smoke, if you find out that it is because of the oil leakage, get it fixed as soon as possible because this may cause heavy damage. Fixing oil leakage means you need to get your vehicle’s valve or seal checked and replaced if they are faulty. Along with this check for any other component that’s causing leakage of oil in your vehicle’s engine.
  • Get some oil drained out: If you have recently topped up engine oil, there might be a possibility of excessive oil being poured which is causing white smoke out of the exhaust. If this is the case reach out to a mechanic and get some oil drained out of your car.
  • Fix Coolant leakage: The coolant leakage problem can be fixed by getting the blown head gasket fixed or getting a cracked engine block fixed by your vehicle’s mechanic.

Final Word

White smoke from the exhaust can be because for many reasons, and if left unattended or ignored this can cause a lot of damage to your vehicle. Above we have mentioned the probable causes of white smoke coming out of exhaust along with the ways to fix it. We hope you find this article helpful!

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