Does a Car Shock Absorber Need Replacement If It's Leaking Oil?

1 Answers
DanielLee
07/30/25 5:51am
Shock absorber oil leakage does not necessarily require immediate replacement. However, if the inspection reveals continuous and severe oil leakage, replacement is essential. Below are two scenarios of shock absorber oil leakage: 1. Minor oil seepage: This manifests as a small amount of oil stains on the upper part of the shock absorber, but it does not affect the vehicle's comfort and is no different from a normal shock absorber. Such minor seepage can be ignored for the time being, but the leakage condition should be monitored regularly. 2. Severe oil leakage: Severe leakage refers to a large amount of oil sludge on the upper part of the shock absorber. Oil leakage will deteriorate the vehicle's damping effect, significantly impairing driving comfort. On bumpy roads, it may sometimes be accompanied by a "squeaking" noise. Moreover, if the leakage is extremely severe and the shock absorber fails, it can cause the vehicle to pull to one side. In such cases, the entire shock absorber needs to be replaced. 3. Oil traces on the surface of the shock absorber tube do not necessarily indicate leakage. Determining whether a shock absorber is leaking and failing requires considering factors such as the shock absorber's design, leakage level, and oil stain location to decide if replacement is needed. For shock absorbers with only minor seepage, replacement may not be necessary. Additionally, it is normal for shock absorbers to exhibit some oil seepage during normal operation. For example, for strut-type shock absorbers like front shock absorbers, if the oil film is between the oil seal cover and the spring seat, replacement is not required. However, if oil leaks below the spring seat or permeates below the spring bracket, or if there are droplets of oil, the shock absorber should be replaced.
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