There are several possible reasons for oil leakage of car shock absorber:

1. Aging or wear of sealing components: Sealing components are used in the shock absorber to prevent oil leakage. Long use or external environmental factors may cause aging or wear of the sealing components and consequently lead to oil leakage.

2. Shock absorber damage: Damage of the outer enclosure or internal parts of the shock absorber, such as crack and breakage, may lead to oil leakage.

3. Overloaded operation of the shock absorber: If the shock absorber is subjected to a load beyond its designed bearing capacity for long, oil leakage may occur.

4. Road conditions and driving habit: Poor road conditions, frequent bumps, or violent driving habits, such as sudden braking and sharp turning, may result in excessive pressure on the shock absorber, thus leading to oil leakage.

5. Manufacturing or installation problem: The shock absorber may have a quality problem during manufacturing or installation that leads to oil leakage, such as improper welding and loose bolt.

If oil leakage of a shock absorber is found, timely inspection and repair should be performed to ensure normal function of the vehicle suspension system.

Advantages of vika shock absorber:

1. Appearance: The vika shock absorber is based on a fully automatic mechanical welding process, which leads to more elegant appearance and more robust structure due to small weld joints and constant welding temperature, angle, and time. It is equipped with dust cover clips to achieve closer matching with the dust cover.

2. Piston rod:

Material: standard 45# steel

Process: mechanical processing (precision grinding) – high-frequency quenching – surface chromium plating

Performance: longer service life of the product (without oil leakage after long use)

3. Work cylinder: The work cylinder makes use of high-precision pipes (cold-drawn seamless steel pipes) with high internal surface processing accuracy.

4. Valve body: A self-locking nut process is adopted for the vika shock absorber to keep the nut firm and prevent loosening. Consistent valve body damping force is therefore guaranteed for long.

5. Piston: The piston structure is well designed to ensure close contact between the piston and the working cylinder wall, eliminate oil leakage between them, and realize consistent damping force.

6. Valve plate: The vika shock absorber is produced with the most advanced process, which leads to more compact structure. The damping force is adjusted by changing the liquid flow rate and valve plate opening angle. This design is more stable and features a longer service life.

7. Oil seal: The vika shock absorber adopts world-class NOK oil seals that reduce friction between the piston rod and the oil seal and extend the lifespan of the seals and the product. The multi-lip oil seal design can effectively seal oil and high-pressure nitrogen, prevent ingress of external dust and dirt, and ensure high product quality and long lifespan.

8. Shock absorber oil: High-performance shock absorber oil is used, which provides good foam resistance and shear resistance, reduces idle travel of the product and wear of internal valve parts, and leads to a long service life. With excellent temperature/viscosity performance, the vika shock absorber is suitable for vehicles running in different regions and climatic conditions.