What Are the Causes of Car Shock Absorber Oil Leakage?
2 Answers
Car shock absorber oil leakage is mainly caused by the following reasons: 1. Poor internal cleanliness of the shock absorber, with welding slag, iron filings, and other debris causing oil seal wear. 2. Harsh working conditions of the shock absorber, allowing external debris like mud and sand to enter the oil seal, leading to wear and oil leakage. 3. Aging of the sealing lip of the shock absorber oil seal, resulting in loss of sealing function. 4. Failure to properly cover the shock absorber during chassis armor spraying, causing the armor to adhere to the shock absorber piston rod and leading to oil seal wear and leakage. 5. The control rod for piston movement needs to extend from one end of the metal tube, and this area requires strict sealing. General oil leakage is directly related to inadequate sealing in this part.
I found that the most common cause of shock absorber oil leakage is wear or damage to the internal oil seal. The shock absorber relies on hydraulic fluid to dampen vibrations, and the oil seal prevents leaks. Over time or with frequent driving on rough roads, the oil seal can age and crack. Hitting potholes or having foreign objects scratch the piston rod can also directly cause oil leakage. Additionally, manufacturing defects, such as improperly installed sealing rings, can lead to issues even in new cars. After oil leakage, the damping effect decreases, causing the car to bounce more and affecting handling and comfort. I recommend regularly inspecting the shock absorber tubes for any oil stains and addressing any signs of leakage promptly to avoid damage to other suspension components, which would make repairs more complicated. When driving, slowing down over bumps and avoiding potholes can help extend the lifespan.
