Is it necessary to replace the gasket when changing engine oil?
2 Answers
The gasket is a disposable component and can be damaged after tightening. Therefore, the drain plug gasket should be replaced when changing the engine oil. The introduction and function of the gasket are as follows: Introduction to the gasket: The gasket is the drain plug, and the drain hole is located at the bottom of the oil pan. If it is not replaced regularly, over time it may become stripped, which would necessitate replacing the entire oil pan. Function of the gasket: During engine operation, wear and tear between internal components generates many fine metal particles. However, ordinary oil filters cannot trap these metal shavings, which can be sucked into the oil passages by the oil pump, potentially causing blockages. Therefore, magnetic drain plugs are used. These magnetic drain plugs can attract and collect these metal particles at the bottom of the oil pan, thereby protecting the engine.
I've been driving for over a decade and always replace the gasket on the oil filter when changing the oil myself, as it's crucial for sealing. Old gaskets can deform or become brittle after exposure to high temperatures and pressure, making them prone to leaks if reused. Once, I skipped replacing it to save time, only to find oil stains on my parking spot the next day. Upon inspection, the gasket had cracked, leaking oil that contaminated the area and nearly damaged the engine. Oil leaks can range from minor contamination to severe engine damage due to lack of lubrication and overheating, potentially costing thousands to repair. Saving a few bucks on a gasket isn't worth it. Whether it's a new or old car, it's best to replace the oil filter regularly during maintenance, as new filters come with fresh gaskets. Applying a bit of oil during installation ensures a smooth fit. Making this a habit keeps the vehicle more reliable and safer, giving me peace of mind.
