Why Engine Oil Leak from Car

1. Worn or Damaged Gaskets

Gaskets are seals that prevent oil from leaking from the engine. Over time, gaskets can become worn or damaged, which can cause oil to leak. Common symptoms of a worn or damaged gasket include:

Oil leaking from the engine
Engine oil level dropping
Visible smoke from the engine

2. Loose or Damaged Oil Filter

The oil filter removes contaminants from the engine oil. If the oil filter is loose or damaged, it can allow oil to leak. Common symptoms of a loose or damaged oil filter include:

Oil leaking from the oil filter
Engine oil level dropping
Visible smoke from the engine

3. Damaged Oil Pan

The oil pan is the lowest part of the engine and holds the engine oil. If the oil pan is damaged, it can allow oil to leak. Common symptoms of a damaged oil pan include:

Oil leaking from the bottom of the engine
Engine oil level dropping
Visible smoke from the engine

4. Clogged PCV Valve

The PCV valve is a valve that helps to remove blow-by gases from the engine. Blow-by gases are gases that escape past the piston rings and enter the crankcase. If the PCV valve is clogged, it can cause pressure to build up in the crankcase, which can force oil out of the engine. Common symptoms of a clogged PCV valve include:

Oil leaking from the engine
Engine oil level dropping
Visible smoke from the engine
Rough idle
Stalling

5. Damaged Piston Rings

Piston rings are rings that seal the pistons to the cylinder walls. If the piston rings are damaged, it can allow oil to leak into the combustion chamber. Common symptoms of damaged piston rings include:

Excessive oil consumption
Blue or black smoke from the exhaust
Loss of power
Rough idle

6. Worn or Damaged Valve Guides

Valve guides are seals that prevent oil from leaking into the combustion chamber. If the valve guides are worn or damaged, it can allow oil to leak. Common symptoms of worn or damaged valve guides include:

Excessive oil consumption
Blue or black smoke from the exhaust
Loss of power
Rough idle

7. Other Causes

There are other factors that can also cause engine oil to leak, including:

Improperly installed engine components
Defective engine parts
Overfilling the engine with oil
Using the wrong type of oil for the engine

How to Fix an Engine Oil Leak

If you suspect that your engine is leaking oil, it is important to have it repaired as soon as possible. An oil leak can lead to serious engine damage if it is not repaired. To fix an engine oil leak, you will need to identify the source of the leak and then repair or replace the damaged component. In some cases, you may be able to fix the leak yourself. However, if the leak is serious, you will need to take your car to a mechanic to have it repaired.