What Causes Engine Block Oil Leakage?
2 Answers
The causes of engine block oil leakage may include deteriorated sealing gasket airtightness or engine oil seepage. The specific reasons and solutions are as follows: Deteriorated Sealing Gasket Airtightness: Oil seals are rubber products that can harden, age, and crack over time. If the leakage is severe, it may indicate a cracked engine block. Solution: Replace the sealing gasket. Engine Oil Seepage: Excessive engine oil seepage can lead to engine block leakage. If there are only minor oil stains on the engine casing, it suggests the leakage is not severe, with minimal and unnoticeable seepage that hardly affects the engine. Solution: Regularly check the oil level.
Last time I encountered an engine block oil leak, it was really frustrating! The mechanic opened it up and showed me that it was either a warped or aged cylinder head gasket, or the block itself had cracked. That gasket thing is under constant high temperature and pressure, and when the rubber hardens, it starts leaking oil. Even worse is when coolant mixes into the engine oil, turning it into a chocolate-milky color—then you're really in trouble. My car last time had excessive crankcase pressure because the PCV valve was clogged, and the pressure pushed the seals right out. The scariest part was cracks around the bolt holes, spiderweb-like, with oil seeping out. Remember, if you see the underside of the engine all oily, don’t delay—get it checked immediately, or you might end up with a fire hazard. It’s important to keep an eye out for oil stains under the car when washing it regularly.
