How to Unscrew the Engine Oil Cap of a Car?

[VonClara]

You can use pliers or go to a repair shop to use specialized tools to open it. Below is more information about the car engine oil cap: 1. Reasons: Due to negative pressure and being screwed too tightly, as air cannot enter under negative pressure, leading to excessive suction, making it difficult to unscrew the oil cap. Additionally, the oil cap might be too tight, and you can wait until the car has cooled down before opening it. The second scenario where it cannot be opened by hand may require tools like pliers. 2. Function: It isolates the engine oil from the air, covers and seals the cylinder head, keeps the oil inside, and prevents contaminants such as dirt and moisture from entering.