What are the reasons for car oil leakage?

[LeilaniLynn]

Common oil leakage phenomena and reasons in cars: 1. Engine oil pan leakage. The required torque for the oil pan screws is not achieved, meaning they are not tightened properly; this commonly occurs after new cars undergo maintenance, resulting in engine oil leakage. Aging of the engine oil pan gasket leads to poor sealing. Related components such as a cracked or deformed engine oil pan are often caused by abnormal wear, car undercarriage impacts, or traffic accidents. 2. Valve cover leakage. Aging of the valve cover gasket results in poor sealing. A blocked crankcase ventilation port causes excessive pressure inside the crankcase. Due to the pressure difference between the inside and outside of the crankcase, engine oil leaks from weak points under high pressure, leading to oil leakage. 3. Brake fluid leakage. When you notice a significant increase in brake pedal travel, it is essential to carefully check for brake fluid leakage. Brake fluid leakage most commonly occurs in these areas: near the brake fluid drain holes of the four wheels, at the brake fluid reservoir, and at the brake pedal. Brake fluid leakage must be taken seriously as it directly relates to driving safety.