What Causes Engine Oil Leakage in a Car?

[LaCole]

Engine oil leakage in a car is primarily caused by the failure of rubber seals in the engine. Below is an introduction to the functions of engine oil: 1. Lubrication to reduce wear - The relative sliding between the engine's pistons and cylinders, as well as between the crankshaft and bearings, causes wear. Engine oil forms a thick oil film between these sliding surfaces, separating the moving parts to minimize wear. 2. Cooling - Engine oil carries heat back to the oil pan, where it is dissipated into the air, assisting the radiator in cooling the engine. 3. Cleaning - Engine oil circulates carbon deposits, sludge, and metal wear particles from engine components back to the oil pan, flushing away contaminants through the flow of the lubricant. 4. Shock absorption - When cylinder pressure rises sharply, it suddenly increases the load on pistons, piston rings, connecting rods, and crankshaft bearings. The lubricated transmission of this load through the bearings helps cushion the impact.