How often should the drain plug be replaced?

[HaileyAnn]

The drain plug does not need to be replaced (with very few exceptions), but the drain plug gasket is best replaced every time. Here is some information about the drain plug: 1. Replacement conditions: The drain plug is made of steel and is of good quality. It is difficult to damage under normal usage unless the threads are misaligned and excessive force is applied. Therefore, the drain plug does not need to be replaced. However, some vehicles use a plastic oil pan, in which case the drain plug is a one-time use item and needs to be replaced every time. 2. Gasket: The gasket serves as a seal. Since engine oil is a fluid with strong permeability, and the contact surface between the drain plug and the oil pan cannot be perfectly smooth, if they are in direct contact, the surface will not fit tightly and oil may leak.