Why is the oil filter only tightened three-quarters of a turn?

[JacksonLee]

The reason the oil filter is only tightened three-quarters of a turn: The oil filter has a specified tightening torque to prevent difficulty in removal during the next replacement due to the expansion of the sealing ring after heating. Over-tightening can also cause damage to the oil filter. Below is an introduction to oil filters: 1. Oil filters can be structurally divided into integral and filter cartridge types. Integral types can be unscrewed and replaced as a whole, while filter cartridge types can only have the filter element replaced. 2. Oil filters generally consist of components such as the housing, filter element, bypass valve, check valve, and sealing ring, and are usually located on the main oil passage of the engine block. The engine's oil pump draws oil from the oil pan and delivers it to the oil filter. After the oil is filtered by the oil filter to remove impurities, it flows through various oil passages to different parts of the engine.