Replacing the oil pan is not considered a major overhaul. Additional information is as follows: 1. Replacing the oil pan: After replacement, the vehicle will function the same as before. This is because the oil pan is simply a metal shell located at the bottom of the vehicle that holds the engine oil, and it has almost no impact on the vehicle's performance. The key is to ensure that the new oil pan does not leak oil after installation. If leakage occurs, it may be due to the oil pan not being tightened properly or a problem with its sealing. In such cases, you will need to troubleshoot the issue yourself. 2. Oil pan: The oil pan is the lower half of the crankcase, also known as the lower crankcase. Its functions include sealing the crankcase as an oil reservoir shell, preventing impurities from entering, collecting and storing the lubricating oil that flows back from the friction surfaces of the diesel engine, dissipating some heat, and preventing the oxidation of the lubricating oil. The oil pan is mostly made of stamped thin steel sheets and is equipped with an oil stabilizing baffle inside to avoid oil splashing caused by vehicle movement, which helps in the sedimentation of lubricating oil impurities. A dipstick is installed on the side to check the oil level. Additionally, the lowest part of the oil pan is equipped with a drain plug. During vehicle maintenance, the engine oil is replaced through this drain plug.
